Swagelok Weld Fittings 6025j
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We ld F i tti n gs Ultrahigh-Purity, Specially Cleaned, and Industrial
■ 1/8 to 1 in. and 6 to 18 mm ■ 316, 316L, 316L VAR, and 316L VIM-VAR stainless steel materials ■ Fittings for manual or automatic welding equipment
2
Weld Fittings
Cleaning and Packaging
Contents
Standard
Materials of Construction . . . . . . . . . . . . . . . . . . . . . . . 2 Cleaning and Packaging . . . . . . . . . . . . . . . . . . . . . . . . 2 Pressure Ratings Basis . . . . . . . . . . . . . . . . . . . . . . . . . 3 Micro-Fit® (Miniature Tube Butt Weld) Fittings . . . . . . . 3 Tube Butt Weld Fittings . . . . . . . . . . . . . . . . . . . . . . . . . 6 Automatic Tube Butt Weld Fittings . . . . . . . . . . . . . . . . 9 Automatic Tube Socket Weld Fittings . . . . . . . . . . . . . . 12 Tube Socket Weld Fittings . . . . . . . . . . . . . . . . . . . . . . . 13 Pipe Socket Weld Fittings . . . . . . . . . . . . . . . . . . . . . . . 15 Pipe Butt Weld Fittings . . . . . . . . . . . . . . . . . . . . . . . . . 16 Swagelok® Orbital Welding System . . . . . . . . . . . . . . . 16
Specifications
Bar Stock➀ SS
316L stainless steel
316L
316L VIM-VAR stainless steel
6LV➁
ASTM A479/ASME SA479 and ASTM A276 SEMI F20‑0305 Ultrahigh-Purity➂
Forgings➃ 316 stainless steel
SS
316L stainless steel
316L
Weld fittings are available cleaned and packaged in accordance with Swagelok Special Cleaning and Packaging (SC‑11), MS‑06‑63, to ensure compliance with product cleanliness requirements as stated in ASTM G93 Level C. To order, add ‑SC11 to the ordering number. Example: 6LV-4MW-6-2-SC11
Photovoltaic (SC‑06) Select weld fittings are available cleaned and packaged in accordance with Swagelok Photovoltaic Process Specification (SC‑06), MS‑06‑64, to meet the process requirements of solar cell production. To order, add -SC06 to the ordering number. Example: 6LV-4MW-6-2-SC06
Example: 6LV-4MW-6-2-P6
Designator
316 stainless steel
Special (SC‑11)
SC-06–cleaned weld fittings are available with controlled surface finishes and electropolishing. Wetted surfaces are finished to an average 5 µin. (0.13 µm) Ra. To order, add -P6 to the ordering number.
Materials of Construction Material
Weld fittings are cleaned in accordance with Swagelok Standard Cleaning and Packaging (SC-10), MS-06-62.
ASTM A182/ASME SA182 and ASTM A314
➀ Includes straight configurations and all Micro-Fit weld fittings. ➁ Straight Micro-Fit configurations are 316L VAR stainless steel/SEMI F20‑0305 High-Purity, 20 % minimum elongation allowed. ➂ 20 % minimum elongation allowed. ➃ Includes all elbows, crosses, and tees, excluding Micro-Fit weld fittings.
Additional Considerations Consult ASME Boiler and Pressure Vessel Code, ASME B31.1, ASME B31.3, or other applicable codes for information on weld setup, technique, and additional considerations for welded systems. The choice of fitting, pipe, and tubing material being welded is critical. Using the same materials will ensure the same coefficients of expansion and will reduce the possibility of poor welds, out-of-roundness, or dimensional changes that are detrimental to a good weld.
Threaded End Connections Pipe threads are based on the requirements of ASME B1.2.0.1 (NPT) and SAE AS71051 (ANPT) for tapered pipe threads.
Ultrahigh-Purity (SC‑01) Select weld fittings are available with controlled surface finishes, electropolished, and specially cleaned. Wetted surfaces are finished to an average 5 µin. (0.13 µm) Ra. For more information, see Swagelok Ultrahigh-Purity Process Specification (SC-01), MS-06-61. To order, add -P to the ordering number. Example: 6LV-4MW-6-2-P
Cleaning Process Availability
Fitting Type Micro-Fit (miniature tube butt weld)
Cleaning Process (Designator) UltrahighPhotovoltaic Special Purity (-SC11 ) (-SC06) (-P6) (-P) ✓
✓
✓
✓
Tube butt weld
✓
✓
✓
✓
Automatic tube butt weld
✓
✓
✓
✓
Automatic tube socket weld
✓
Tube socket weld
✓
Pipe socket weld
✓
Pipe butt weld
✓
Oxygen Service Hazards For more information about hazards and risks of oxygenenriched systems, see the Swagelok Oxygen System Safety Technical Report, MS‑06‑13.
Weld Fittings
3
Pressure Ratings Basis Catalog pressure ratings shown are for temperatures from –20 to 100°F (–28 to 37°C), which are based on an allowable stress value of 20 000 psi (1378 bar) in accordance with ASME B31.3 and ASME B31.1 for 316 stainless steel. 316L stainless steel material is controlled in accordance with Swagelok material specifications and possesses minimum room temperature tensile and yield strengths equivalent to 316 stainless steel.
Material Type
316 SS
Temperature, °F (°C)
Pressure derating factors for applications at temperatures greater than 100°F (37°C) were determined from these pressure codes and are listed in the table at right.
316L SS Factor
–20 (–28) to 100 (37)
1.00
1.00
200 (93)
1.00
0.83
400 (204)
0.96
0.77
600 (315)
0.85
0.67
800 (426)
0.79
0.62
1000 (537)
0.76
0.56
Examples:
Elevated-Temperature Factors
A 1/4 in. 316L VIM-VAR reducing union has a pressure rating of 5100 psig (351 bar), as shown in the table below. To obtain the pressure rating at 400°F (204°C), multiply 5100 psig (351 bar) by 0.77: 5100 psig (351 bar) 0.77 = 3927 psig (270 bar)
To determine elevated-temperature pressure ratings in accordance with B31.3 and B31.1, multiply the pressure ratings provided in the ordering number tables on the pages that follow by the factors in the table at right.
A 1/4 in. 316 SS tube socket weld union has a pressure rating of 10 700 psig (737 bar), as shown in the table on page 13. To obtain the pressure rating at 400°F (204°C), multiply 10 700 psig (737 bar) by 0.96: 10 700 psig (737 bar) 0.96 = 10 272 psig (707 bar) Alternative elevated-temperature factors may be chosen from ASME B31.3 or B31.1 at the ’s discretion.
Micro-Fit (Miniature Tube Butt Weld) Fittings Compact Design ■ Accommodates ■ Allows
Rounded body block helps prevent damage to other components during system fabrication or maintenance.
tubing systems requiring miniaturization
close component spacing
■ Provides
Marking identifies manufacturer, material, and, when applicable, ultrahigh-purity cleaning.
flow and service ratings equal to larger weld
fittings. Material heat code is roll stamped to ensure raw material traceability.
Ordering Information and Dimensions ■ Dimensions are for reference only and are subject to
change.
Ultrahigh-purity cleaning with average 5 µin. (0.13 µm) Ra surface finish is available. Standard surface finish is average 10 µin. (0.25 µm) Ra.
■ See Cleaning and Packaging, page 2, to order Micro-
Fit weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS‑06‑63; Photovoltaic Process Specification (SC‑06), MS‑06‑64; or Ultrahigh-Purity Process Specification (SC-01), MS-06-61.
Reducing Union B B1
A
Square, sharp, burrfree tube weld ends enhance alignment, maintain tube wall uniformity, and promote weld repeatability.
Ordering Number
Radiused junction allows for a smooth flow transition and eliminates pockets and entrapment zones.
Dimensions
Tube OD
Wall Thickness
Tube OD
Wall Thickness
1/4
0.035
1/8
0.028
6LV-4MW-6-2
3/8
0.035
1/4
0.035
6LV-6MW-6-4
0.75
0.42
0.25
3300 (227)
6LV-8MW-6-4
(19.0)
(10.7)
(6.4)
3700 (254)
A
B
B1
Dimensions, in. (mm)
1/2
0.049
1/4 3/8
0.035
6LV-8MW-6-6
Pressure Rating psig (bar) 5100 (351)
3300 (227)
4
Weld Fittings
Micro-Fit (Miniature Tube Butt Weld) Fittings 90° Union Elbow L
B
A F flat
L
Dimensions
Tube OD
Wall Thickness
Ordering Number
1/8
0.028
6LV-2MW-9
1/4
0.035
6LV-4MW-9
3/8
0.035
6LV-6MW-9
0.69 (17.5)
1/2
0.049
6LV-8MW-9
0.81 (20.6)
A
B
F
Pressure Rating
L
Dimensions, in. (mm)
psig (bar)
0.56 (14.2) 0.25 (6.4)
5/16
0.41 (10.4) 8500 (585)
5/16
0.41 (10.4) 5100 (351)
7/16
0.47 (11.9) 3300 (227)
9/16
0.53 (13.5) 3700 (254)
(5/16)
10.4 (0.41) 420 (6095)
(7/16)
11.9 (0.47) 310 (4499)
(7/16)
11.9 (0.47) 240 (3483)
(9/16)
13.5 (0.53) 200 (2902)
Dimensions, mm (in.) 6 8 10
6LV-6MMW-9 1.0
12
Reducing 90° Union Elbow
Tube OD
Wall Thickness
6LV-8MMW-9
17.5 (0.69)
6LV-10MMW-9
17.5 (0.69)
6LV-12MMW-9
20.6 (0.81)
Tube OD
Wall Thickness
A
6.4 (0.25)
Dimensions
Ordering Number
A
3/8
0.035
1/4
0.035
0.049
A
0.81
6
10
6
17.5 17.5 (0.69)
1.0
8
Tube OD
A
L1
9/16
Wall Thickness
1/4
(7/16)
6.4
20.6
(9/16)
(0.81)
6LV-12MMW-9-8M
A
A1
(20.6)
0.035
0.53
(254)
3300
11.9
bar (psig) 310
(0.47)
(4499)
11.9
240
(0.47)
(3483)
13.5
200
(0.53)
(2902)
B
B1
F
L
L1
Pressure Rating psig (bar)
0.45
0.61
(11.4)
0.41
0.50
(10.4)
(12.7)
5/16
(15.5)
0.66 (16.8)
6LV-4MW-9-03444
0.76 (19.3)
0.45 (11.4)
0.61 (15.5)
6LV-4MW-9-03445
0.81 (20.6)
0.50 (12.7)
0.66 (16.8)
B1
45° Union Elbow
Dimensions
Tube OD
Wall Thickness
Ordering Number
1/4
0.035
6LV-4MW-5
3/8
0.035
6LV-6MW-5
0.56 (14.2)
1/2
0.049
6LV-8MW-5
0.64 (16.3)
A
B
F
Dimensions, in. (mm) 0.47 (11.9) 0.25 (6.4)
(227)
(13.5)
Dimensions
Ordering Number
Dimensions, in. (mm) 0.76 6LV-4MW-9-03442 0.56 (19.3) 0.25 (14.2) (6.4) 0.81 6LV-4MW-9-03443 A1
(11.9)
(0.25)
6LV-12MMW-9-6M
12
F flat
psig (bar) 3300 3700
(7/16)
(0.69)
6LV-10MMW-9-6M
6
B
0.47
(227)
6LV-8MMW-9-6M
1.0
A L
Pressure Rating
Dimensions, mm (in.) 8
Extended Leg 90° Union Elbow
(6.4)
(20.6)
6LV-8MW-9-6
B
F flat
F flat
L
0.25
6LV-8MW-9-4
3/8
7/16
(17.5)
0.035
L
B
F
0.69
6LV-6MW-9-4
1/4 1/2
L
B
Dimensions, in. (mm)
L
B
bar (psig)
14.2 (0.56)
L
Pressure Rating psig (bar)
5/16
0.41 (10.4) 5100 (351)
7/16
0.47 (11.9) 3300 (227)
9/16
0.53 (13.5) 3700 (254)
5100 (351)
Weld Fittings
5
Micro-Fit (Miniature Tube Butt Weld) Fittings Union Tee A
L
F flat
Dimensions
Tube OD
Wall Thickness
Ordering Number
1/8
0.028
6LV-2MW-3
1/4
0.035
6LV-4MW-3
3/8
0.035
6LV-6MW-3
0.94 (23.9)
1/2
0.049
6LV-8MW-3
1.06 (26.9)
B
A
B
F
Pressure Rating
L
Dimensions, in. (mm)
L
psig (bar)
0.82 (20.8) 0.25 (6.4)
5/16
0.41 (10.4) 8500 (585)
5/16
0.41 (10.4) 5100 (351)
7/16
0.47 (11.9) 3300 (227)
9/16
0.53 (13.5) 3700 (254)
(5/16)
10.4 (0.41) 420 (6095)
(7/16)
11.9 (0.47) 310 (4499)
(7/16)
11.9 (0.47) 240 (3483)
(9/16)
13.5 (0.53) 200 (2902)
Dimensions, mm (in.) 6 8
1.0
10 12
Extended Branch Leg Union Tee B
L
Tube OD
A
B1
L1
0.035
B
23.9 (0.94) 23.9 (0.94)
6LV-12MMW-3
26.9 (1.06)
Ordering Number
6.4 (0.25)
Dimensions A
A1
B
Dimensions, in. (mm) 0.82 0.76 0.25 6LV-4MW-3-03446 (20.8)
Tube Wall OD Thickness
A
L1
B1
F flat
6LV-8MMW-3 6LV-10MMW-3
bar (psig)
B1 0.45
(19.3)
(6.4)
(11.4)
A
A1
B
1/4
A1
0.035
Ordering Number
F flat
L
Dimensions, in. (mm) 1.96 0.56 0.83 6LV-4MW-3-03921
(49.8) (14.2) (21.1)
Pressure Rating
0.41
0.61
psig (bar) 5100
5/16
(10.4)
(15.5)
(351)
B1
L
L1
Pressure Rating
0.98
0.41
psig (bar) 5100
F
0.25 (6.4)
5/16
(24.9) (10.4)
B
Ordering Number
Dimensions A
B
F
L
Pressure Rating
0.47
psig (bar) 3300
Dimensions, in. (mm)
L
0.035
1/4 1/4
1/2
(351)
There may be a slight mismatch between run ends at drill intersection.
Tube Wall Tube Wall OD Thickness OD Thickness 3/8
B
L1
Dimensions
Reducing Tee A
L
F
A1
Extended Run Leg Union Tee L
20.8 (0.82)
Wall Thickness
1/4
F flat
6LV-6MMW-3
6LV-6MW-3-6-4 0.035
6LV-8MW-3-8-4
0.049 3/8
6LV-8MW-3-8-6
0.94
7/16
(23.9)
(11.9)
0.25 1.06
(6.4)
(26.9)
9/16
0.53
(254)
(13.5)
3300
11.9
bar (psig) 240
(0.47)
(3483)
(227)
Dimensions, mm (in.) 10
6 1.0
6
6LV-10MMW-3-10M-6M 1.0
6LV-12MMW-3-12M-6M
12 8
6LV-12MMW-3-12M-8M
(227)
3700
23.9
(7/16)
(0.94)
6.4 26.9 (1.06)
(0.25)
(9/16)
13.5
200
(0.53)
(2902)
6
Weld Fittings
Micro-Fit (Miniature Tube Butt Weld) Fittings Union Cross A
Tube OD
Wall Thickness
1/8
0.028
6LV-2MW-4
1/4
0.035
6LV-4MW-4
A
B
F
Pressure Rating
L
Dimensions, in. (mm)
F flat
L
Dimensions
Ordering Number
B
psig (bar) 5/16
0.41 (10.4) 8500 (585)
5/16
0.41 (10.4) 5100 (351)
7/16
0.47 (11.9) 3300 (227)
9/16
0.53 (13.5) 3700 (254)
(5/16)
10.4 (0.41) 420 (6095)
(7/16)
11.9 (0.47) 310 (4499)
(7/16)
11.9 (0.47) 240 (3483)
(9/16)
13.5 (0.53) 200 (2902)
0.82 (20.8)
3/8
0.035
6LV-6MW-4
0.94 (23.9)
1/2
0.049
6LV-8MW-4
1.06 (26.9)
0.25 (6.4)
Dimensions, mm (in.) 6
6LV-6MMW-4
8
6LV-8MMW-4
1.0
10
Tribow
Tube OD
6LV-12MMW-4
26.9 (1.06)
Wall Thickness
Ordering Number
B
L
1/4 F flat
0.035
3/8
A
0.035
1/2
This unique design has weld ends in three planes at 90° to each other. It permits greater flexibility in deg systems, especially where space is limited.
23.9 (0.94)
6LV-10MMW-4
12
0.049
6
1.0
bar (psig)
20.6 (0.81) 6.4 (0.25)
Dimensions A
B
F
Dimensions, in. (mm) 0.56 6LV-4MW-91
5/16
(14.2)
6LV-6MW-91 6LV-8MW-91
0.69
0.25
(17.5)
(6.4)
0.81
7/16 9/16
(20.6)
Dimensions, mm (in.) 14.2 6LV-6MMW-91
6.4
(0.56)
(0.25)
(5/16)
L
Pressure Rating
0.41
psig (bar) 5100
(10.4)
(351)
0.47
3300
(11.9)
(227)
0.53
3700
(13.5)
(254)
10.4
bar (psig) 420
(0.41)
(6095)
Tube ends are machined with a square face and corners to enhance alignment and maintain tube wall uniformity.
Tube Butt Weld Fittings Ordering Information and Dimensions ■ Dimensions are for reference only and are subject to
change. ■ See Cleaning and Packaging, page 2, to order tube
butt weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS‑06‑63; Photovoltaic Process Specification (SC‑06), MS‑06‑64; or Ultrahigh-Purity Process Specification (SC-01), MS-06-61.
90° Union Elbow B
L
Tube OD
Wall Thickness
1/4
0.035
316L-4TB7-9
3/8
0.035
316L-6TB7-9
1/2
0.049
316L-8TB7-9
3/4
0.049
316L-12TB7-9
1.0
316L-6MTB7-9
F flat
L
Standard surface finish is average 10 µin. (0.25 µm) Ra. Controlled surface finish is available for ultrahigh-purity systems.
Ordering Number
Dimensions B
F
Dimensions, in. (mm)
0.75 (19.0)
8
1.0
316L-8MTB7-9
10
1.0
316L-10MTB7-9
12
1.0
18
1.5
L
Pressure Rating psig (bar)
7/16
1.23 (31.2) 5100 (351)
7/16
1.20 (30.5) 3300 (227)
11/16
1.34 (34.0) 3700 (254)
15/16
1.46 (37.1) 2400 (165)
(7/16)
31.2 (1.23) 420 (6095)
Dimensions, mm (in.) 6
Precisely finished diameter matches tube diameter.
bar (psig) (7/16)
31.2 (1.23) 310 (4499)
(11/16)
34.0 (1.34) 240 (3483)
316L-12MTB7-9
(11/16)
34.0 (1.34) 200 (2902)
316L-18MTB7-9
(15/16)
37.6 (1.48) 200 (2902)
19.0 (0.75)
Weld Fittings
Tube Butt Weld Fittings Reducing Union
B
A
Tube OD
Wall Thickness
Tube OD
Wall Thickness
3/8
0.035
1/4
0.035
1/2
0.049
3/4
0.049
Dimensions
Ordering Number
A
B
Dimensions, in. (mm)
B
1
0.065
1/4 3/8 1/2 1/2 3/4
0.035 0.049 0.049
psig (bar)
316L-6TB7-6-4
3300 (227)
316L-8TB7-6-4
3700 (254)
316L-8TB7-6-6
1.50
0.75
3300 (227)
316L-12TB7-6-8
(38.1)
(19.0)
2400 (165)
316L-16TB7-6-8
2400 (165)
316L-16TB7-6-12
Dimensions, mm (in.) 10
1.0
6 8
1.0
6 12
1.0
8 10
Union Tee L F flat
L
A B
6
240 (3483)
316L-10MTB7-6-8M 316L-12MTB7-6-8M 316L-12MTB7-6-10M
1.0
1.5
Tube OD
Wall Thickness
1/4
0.035
316L-4TB7-3
2.46 (62.5)
3/8
0.035
316L-6TB7-3
2.40 (61.0)
Ordering Number
38.1
19.0
(1.50)
(0.75)
316L-18MTB7-6-6M
18
12
bar (psig)
316L-10MTB7-6-6M 316L-12MTB7-6-6M
1.0
Dimensions A
B
1/2
0.049
316L-8TB7-3
2.68 (68.1)
3/4
0.049
316L-12TB7-3
2.91 (73.9)
F
316L-6MTB7-3
8
1.0
316L-8MTB7-3
62.5 (2.46)
1.0
316L-10MTB7-3
67.8 (2.67)
12
1.0
316L-12MTB7-3
67.8 (2.67)
18
1.5
316L-18MTB7-3
74.9 (2.95)
Pressure Rating psig (bar)
1.23 (31.2) 5100 (351)
0.75
7/16
1.20 (30.5) 3300 (227)
(19.0)
11/16
1.34 (34.0) 3700 (254)
15/16
1.46 (37.1) 2400 (165)
(7/16)
31.2 (1.23) 420 (6095)
bar (psig)
62.5 (2.46)
10
L
7/16
Dimensions, mm (in.) 1.0
200 (2902)
200 (2902)
316L-18MTB7-6-12M
Dimensions, in. (mm)
6
Pressure Rating
19.0 (0.75)
(7/16)
31.2 (1.23) 310 (4499)
(11/16)
34.0 (1.34) 240 (3483)
(11/16)
34.0 (1.34) 200 (2902)
(15/16)
37.6 (1.48) 200 (2902)
7
8
Weld Fittings
Tube Butt Weld Fittings Reducing Tee L F flat
Tube Wall Tube Wall OD Thickness OD Thickness
A
Dimensions
Ordering Number
A
B
F
L
L1
Pressure Rating
1.20
1.23
psig (bar) 3300
Dimensions, in. (mm)
B
3/8
0.035
1/4
316L-6TB7-3-6-4
1/4
L1
1/2
3/8
316L-8TB7-3-8-4 0.035
3/8
2.67 (67.8)
316L-8TB7-3-8-6
0.75
11/16
(30.5) (31.2)
(227)
1.34
3700
1.34 (34.0) 1.35
3300
(34.3)
(227)
(34.0)
(19.0)
316L-12TB7-3-12-6
2.91
15/16
(73.9)
316L-12TB7-3-12-4
1.46 (34.3) 1.48
(37.1)
6
316L-8MTB7-3-8M-6M
6
316L-10MTB7-3-10M-6M
62.2
8
1.0
(2.67)
316L-12MTB7-3-12M-6M
8
316L-12MTB7-3-12M-8M
L
A
Tube OD
Wall Thickness
1/4
0.035
Ordering Number
19.0
67.8
F flat
B
B
F
L
7/16
1.23 (31.2) 5100 (351)
0.035
316L-6TB7-4
2.39 (60.7) 0.75 (19.0)
7/16
1.20 (30.5) 3300 (227)
0.049
316L-8TB7-4
2.61 (66.3) 0.75 (19.0)
11/16
1.34 (34.0) 3700 (254)
(7/16)
31.3 (1.23) 420 (6095)
(7/16)
31.3 (1.23) 310 (4499)
(5/8)
34.0 (1.34) 240 (3483)
(5/8)
34.0 (1.34) 200 (2902)
8
1.0
ATW Weld Ring ATW weld rings are used with tube butt weld fittings. The ring helps align weld ts and adds material to the weld zone during manual or orbital welding.
62.2 (2.45)
316L-8MTB7-4
62.2 (2.45)
bar (psig)
19.0 (0.75)
316L-12MTB7-4 64.8 (2.55)
Tube OD 1/4 3/8 1/2
N
316L-6MTB7-4
316L-10MTB7-4 64.8 (2.55)
12
M typical
Pressure Rating
3/8
10
Tx
34.0 (1.34)
psig (bar)
2.45 (62.2) 0.75 (19.0)
Dimensions, mm (in.)
E
34.0 (1.34)
1/2 6
L
Ordering Number
Dimensions E
M
N
Dimensions, in. (mm) 0.20 316L-4-ATW-R
316L-8-ATW-R
Tx 0.28
(5.1)
316L-6-ATW-R
bar (psig) 310 (4499)
(7.1)
0.32
0.02
0.01
0.41
(8.1)
(0.51)
(0.25)
(10.4)
0.42
0.54
(10.7)
(13.7)
(3483)
200 (2902)
(11/16)
(2.67)
Dimensions, in. (mm) 316L-4TB7-4
(11/16)
Dimensions A
31.3 (1.23)
(0.75)
12
Union Cross
(165)
240 67.8
316L-10MTB7-3-10M-8M
6
(7/16)
(2.45)
10 1.0
2400
(37.6)
Dimensions, mm (in.) 8
(254)
1.35
0.049 1/4
7/16
(60.7)
0.049
B
3/4
2.39
200 (2902)
Weld Fittings
Automatic Tube Butt Weld Fittings
9
Precisely finished diameter matches tube diameter.
Ordering Information and Dimensions ■ Dimensions are for reference only and are subject to
change. Standard surface finish is average 10 µin. (0.25 µm) Ra. Controlled surface finish is available for ultrahigh-purity systems.
■ See Cleaning and Packaging, page 2, to order
automatic tube butt weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC‑11), MS‑06‑63; Photovoltaic Process Specification (SC‑06), MS‑06‑64; or Ultrahigh-Purity Process Specification (SC‑01), MS-06-61.
Locator Union A
Tube OD B
1/4 3/8
F
Union A
Dimensions
Ordering Number
A
B
Dimensions, in. (mm) 1.69 316L-4-ATW-6L
D Tx
D
Wall Thickness
Integral filler ring aids in alignment.
0.035
(42.9)
0.035
316L-6-ATW-6L 316L-8-ATW-6L
D
F
Tx
Pressure Rating
0.02
0.36
0.29
psig (bar) 5100
(0.51)
(9.1)
(7.4)
(351)
1.71
0.75
0.03
0.42
0.41
3300
(43.4)
(19.0)
(0.76)
(10.7)
(10.4)
(227)
1.73
0.04
0.60
0.55
3700
(43.9)
(1.0)
(15.2)
(14.0)
(254)
1/2
0.049
Tube OD
Wall Thickness
1/4
0.035
316L-4-ATW-6
1.00 (25.4) 0.02 (0.51) 0.29 (7.4)
3/8
0.035
316L-6-ATW-6
1.00 (25.4) 0.03 (0.76) 0.41 (10.4) 3300 (227)
1/2
0.049
316L-8-ATW-6
1.00 (25.4) 0.04 (1.0)
0.55 (14.0) 3700 (254)
3/4
0.049
316L-12-ATW-6
1.00 (25.4) 0.04 (1.0)
0.80 (20.3) 2400 (165)
1
0.065
316L-16-ATW-6
1.25 (31.8) 0.04 (1.0)
1.06 (26.9) 2400 (165)
Dimensions
Ordering Number
A
D
Pressure Rating
Tx
Dimensions, in. (mm)
Tx
psig (bar) 5100 (351)
Dimensions, mm (in.)
Reducing Union A
D Tx
B
1.0
316L-6-MATW-6
0.51 (0.02) 6.9 (0.27)
420 (6095)
8
1.0
316L-8-MATW-6
0.76 (0.03) 8.9 (0.35)
310 (4499)
10
1.0
316L-10-MATW-6
0.76 (0.03) 10.9 (0.43)
240 (3483)
12
1.0
316L-12-MATW-6
1.0 (0.04) 13.2 (0.52)
200 (2902)
18
1.5
316L-18-MATW-6
1.0 (0.04) 19.3 (0.76)
200 (2902)
Tube Wall Tube Wall OD Thickness OD Thickness D1 Tx1
bar (psig)
6
31.8 (1.25)
Ordering Number
Dimensions Tx1
Pressure Rating
1.58 0.75 0.03 0.02 0.41 0.29
psig (bar) 3300
A
B
D
D1
Tx
Dimensions, in. (mm) 3/8
0.035
1/4
0.035
1/4 1/2
0.049
316L-8-ATW-6-4 0.035
3/8 3/4
0.049
316L-6-ATW-6-4
1/2
316L-8-ATW-6-6 0.049
316L-12-ATW-6-8
(40.1) (19.0) (0.76) (0.51) (10.4)
(7.4)
(227)
0.29
3700
1.58 0.75 0.04 (0.51) 0.55 (7.4) (1.0) 0.03 (14.0) 0.41
3300
0.02 (40.1) (19.0)
(0.76)
(10.4)
(227)
1.62 0.75 0.04 0.04 0.80 0.55
2400
(41.1) (19.0)
(1.0)
(1.0)
(20.3) (14.0)
Dimensions, mm (in.) 8
6 1.0
6
316L-8-MATW-6-6M 1.0
316L-12-MATW-6-6M
12 8
316L-12-MATW-6-8M
(254)
39.9
0.76 0.51
(1.57)
(0.03) (0.02) (0.35) (0.27)
40.1 19.0 (1.58) (0.75)
40.4 (1.59)
0.51
8.9
6.8
(165)
bar (psig) 310 (4499)
6.8
1.0 (0.02) 13.2 (0.27) (0.04) 0.76 (0.52) 8.9 (0.03) (0.35)
200 (2902)
10
Weld Fittings
Automatic Tube Butt Weld Fittings Swagelok Tube Fitting to Automatic Tube Weld Connector
Tube OD
A D
1/4
D1
B
3/8
Tx
1/2
90° Union Elbow D
B
Tube OD
L
Tube OD
Wall Thickness
1/4
0.035
3/8
0.035
1/2
0.049
Wall Thickness
1/4
0.035
3/8
L
0.035
1/2
316L-8-ATW-6-810
316L-12-ATW-9
0.065
316L-16-ATW-9
D1
Tx
Pressure Rating
0.60
0.02
0.29
psig (bar) 5100
(15.2)
(0.51)
(7.4)
(351)
1.84
0.75
0.66
0.03
0.41
3300
(46.7)
(19.0)
(16.8)
(0.76)
(10.4)
(227)
1.99
0.90
0.04
0.55
3700
(50.5)
(22.9)
(1.0)
(14.0)
(254)
Dimensions
Ordering Number
316L-8-ATW-9
0.049
1
(44.2)
316L-6-ATW-6-600
D
B
Dimensions, in. (mm) 1.74 316L-4-ATW-6-400
316L-6-ATW-9
0.049
3/4
A
B
D
Dimensions, in. (mm) 0.02 0.75 316L-4-ATW-9
F flat
Tx
Dimensions
Ordering Number
(19.0)
(0.51)
0.75
0.03
(19.0)
(0.76)
0.75
0.04
(19.0)
(1.0)
0.75
0.04
(19.0)
(1.0)
0.96
0.04
(24.4)
(1.0)
L
Tx
Pressure Rating
1.25
0.29
psig (bar) 5100
F 7/16 7/16 11/16 15/16 1 1/4
(31.8)
(7.4)
(351)
1.23
0.41
3300
(31.2)
(10.4)
(227)
1.38
0.55
3700
(35.1)
(14.0)
(254)
1.50
0.80
2400
(38.1)
(20.3)
(165)
1.89
1.06
2400
(48.0)
(26.9)
(165)
Dimensions, mm (in.) 6
1.0
316L-8-MATW-9
10
1.0
316L-10-MATW-9
12
1.0
316L-12-MATW-9
18
1.5
316L-18-MATW-9
Tube OD
A
Tx
L
Wall Thickness
D
B
0.51
316L-6-MATW-9
8
Union Tee L F flat
1.0
(0.02)
0.76 (0.03)
19.0
0.76
(0.75)
(0.03)
Ordering Number
1.0 (0.04)
1.0 (0.04)
(7/16) (7/16) (11/16) (11/16) (15/16)
B
1/4
0.035
3/8
0.035
316L-6-ATW-3
1/2
0.049
316L-8-ATW-3
3/4
0.049
316L-12-ATW-3
1
0.065
316L-16-ATW-3
1.0 1.0
316L-8-MATW-3
10
1.0
316L-10-MATW-3
12
1.0
316L-12-MATW-3
18
1.5
316L-18-MATW-3
(0.27)
(5100)
32.0
8.9
227
(1.26)
(0.35)
(3300)
34.8
10.9
254
(1.37)
(0.43)
(3700)
35.1
13.2
199
(1.38)
(0.52)
(2888)
38.6
19.3
206
(1.52)
(0.76)
(2989)
D 0.02
(63.5)
(19.0)
(0.51)
2.46
0.75
0.03
(62.5)
(19.0)
(0.76)
2.76
0.75
0.04
(70.1)
(19.0)
(1.0)
3.00
0.75
0.04
(76.2)
(19.0)
(1.0)
3.78
0.96
0.04
(96.0)
(24.4)
(1.0)
Dimensions, mm (in.) 63.5 316L-6-MATW-3
8
6.9
(1.25)
Dimensions A
Dimensions, in. (mm) 0.75 2.50 316L-4-ATW-3
6
31.8
bar (psig) 351
0.51
(2.50)
(0.02)
64.0
0.76
(2.52)
(0.03)
69.6
19.0
0.76
(2.74)
(0.75)
(0.03)
70.1
1.0
(2.76)
(0.04)
77.2
1.0
(3.04)
(0.04)
F 7/16 7/16 11/16 15/16 1 1/4
(7/16) (7/16) (11/16) (11/16) (15/16)
L
Tx
Pressure Rating
1.25
0.29
psig (bar) 5100
(31.8)
(7.4)
(351)
1.23
0.41
3300
(31.2)
(10.4)
(227)
1.38
0.55
3500
(35.1)
(14.0)
(241)
1.50
0.80
2400
(38.1)
(20.3)
(165)
1.89
1.06
2400
(48.0)
(26.9)
(165)
31.8
6.9
bar (psig) 454
(1.25)
(0.27)
(6589)
32.0
8.9
323
(1.26)
(0.35)
(4687)
34.8
10.9
254
(1.37)
(0.43)
(3686)
35.1
13.2
206
(1.38)
(0.52)
(2989)
38.6
19.3
206
(1.52)
(0.76)
(2989)
Weld Fittings
11
Automatic Tube Butt Weld Fittings Reducing Tee
A
F flat
L
D
B Tx
K B
D1
Tube OD
Wall Tube Wall Thickness OD Thickness
3/8
0.035
1/4
Dimensions
Ordering Number
A
(62.5)
0.035
316L-8-ATW-3-8-4
0.035
3/8 3/4
12
1.0
6
B
L
K
1/4
0.035
3/8 L
1/2
Tx1
Pressure Rating
1.25
1.23
0.41
0.29
psig (bar) 3300
(7.4)
(227)
0.29
3700
(35.1) 1.38 0.55 (7.4) 0.04 (0.51) 11/16 (1.0) 0.03 1.37 (35.1) (14.0) 0.41
3300
(34.8)
(10.4)
(11/16)
34.5
35.1
13.2
6.9
(1.36) (1.38) (0.52) (0.27)
Dimensions A
316L-8-ATW-3-8TB7-8A
2.43
(227)
2400 (165)
(14.0)
0.51 (0.02)
Ordering Number
(254)
0.41
(1.0)
316L-6-ATW-3-6TB7-6A
0.049
Tx
1.38
B
D
(63.0)
0.035
L
(31.8) (31.2) (10.4)
Dimensions, in. (mm) 2.48 316L-4-ATW-3-4TB7-4A
B
7/16
K
0.04 (0.76) 1.50 1.50 0.80 (10.4) 15/16 (1.0) 0.04 (38.1) (38.1) (20.3) 0.55
3.00
(2.76) (0.75)
Tube Wall OD Thickness F
0.02
(0.76)
Dimensions, mm (in.) 70.1 19.0 316L-12-MATW-3-12M6M
Manifold Tee A
0.75
(76.2)
316L-12-ATW-3-12-8
1.0
F
0.03
316L-12-ATW-3-12-6
0.049
0.03
(19.0)
0.049 1/2
D1
(0.76) (0.51)
2.76 (70.1)
316L-8-ATW-3-8-6
0.035
D
0.02
0.049 3/8
B
Dimensions, in. (mm) 2.46 316L-6-ATW-3-6-4
0.035
1/4 1/2
D
Tx1
0.75
0.02 (0.51)
0.03
(61.7) (19.0) (0.76)
2.72
0.04
(69.1)
(1.0)
F 7/16 11/16 11/16
bar (psig) 200 (2902)
K
L
Tx
Pressure Rating
1.23
1.25
0.29
psig (bar) 5100
(31.2) (31.8)
(7.4)
(351)
1.23
0.41
3300
1.20
(30.5) (31.2) (10.4)
(227)
1.38
0.55
3700
(34.0) (35.1) (14.0)
(254)
1.34
Tx
Reducing Tee
A F flat
L
B
D Tx
K B
Tube OD
Wall Thickness
Tube OD
3/8
0.035
1/4 1/4
1/2
Wall Thickness
Ordering Number
B
Dimensions, in. (mm) 2.46
316L-6-ATW-3-6A-4TB7 0.035
316L-8-ATW-3-8A-4TB7
0.049 3/8
Dimensions A
316L-8-ATW-3-8A-6TB7
D 0.03
(62.5)
(0.76)
F 7/16
0.75 2.76 (70.1)
(19.0)
K
L
Tx
Pressure Rating
1.23
1.23
0.41
psig (bar) 3300
(31.2)
(31.2)
(10.4)
0.04 (1.0)
11/16
(227)
3700
1.36 (34.5)
1.38
0.55
(254)
1.35
(35.1)
(14.0)
3300
(34.3)
(227)
12
Weld Fittings
Automatic Tube Butt Weld Fittings Union Cross
Tube OD
A
L
1/4 F flat
D
B Tx
3/8 1/2
Wall Thickness 0.035 0.035 0.049
L
6 1.0 8
Dimensions
Ordering Number
A
B
D
Dimensions, in. (mm) 2.50 316L-4-ATW-4
0.02
(63.5)
316L-6-ATW-4 316L-8-ATW-4
7/16
(0.51)
2.46
0.75
0.03
(62.5)
(19.0)
(0.76)
2.70
0.04
(68.6)
(1.0)
Dimensions, mm (in.) 63.5 316L-6-MATW-4 (2.50) 19.0 (0.75) 64.0 316L-8-MATW-4
L
Tx
Pressure Rating
1.25
0.29
psig (bar) 5100
F
7/16 5/8
(31.8)
(7.4)
(351)
1.23
0.41
3300
(31.2)
(10.4)
(227)
1.35
0.55
3700
(34.3)
(14.0)
(254)
6.9
bar (psig) 420
31.8
(0.27)
(6095)
(1.25)
8.9
310
(0.35)
(4499)
0.51 (0.02)
(7/16)
0.76
(2.52)
(0.03)
Automatic Tube Socket Weld Fittings
Thin wall reduces weld heat input.
Ordering Information and Dimensions ■ Dimensions are for reference only and are subject to
change. ■ See Cleaning and Packaging, page 2, to order
automatic tube socket weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS‑06‑63. Precise machining of socket ensures proper tube fit.
Union
Tube OD
A
1/4
D
Union Tee A B
A
D
E
Tx
Pressure Rating
0.19 (4.8)
0.38 (9.7)
6800 (468)
0.50 (12.7) 4900 (337)
Dimensions, in. (mm)
Tx
E
Dimensions
Ordering Number 316L-4-ASW-6
3/8
316L-6-ASW-6
1.00
0.31 (7.9)
0.28 (7.1)
1/2
316L-8-ASW-6
(25.4)
0.38 (9.7)
0.41 (10.4) 0.63 (16.0) 3800 (261)
3/4
316L-12-ASW-6
Tube OD
Ordering Number
L F flat
1/4
Tx E D L
psig (bar)
0.28 (7.1)
3/8 1/2 3/4
316L-4-ASW-3 316L-6-ASW-3 316L-8-ASW-3 316L-12-ASW-3
0.44 (11.2) 0.63 (16.0) 0.88 (22.4) 2700 (186)
Dimensions A
B
D
E
Dimensions, in. (mm) 0.28 2.46
0.19
(62.5)
(7.1)
(4.8)
2.68
0.31
0.28
(68.1)
0.75
(7.9)
(7.1)
2.68
(19.0)
0.38
0.41
(68.1)
(9.7)
(10.4)
2.94
0.44
0.63
(74.7)
(11.2)
(16.0)
F 7/16 11/16 11/16 15/16
L
Tx
Pressure Rating
1.23
0.38
psig (bar) 6800
(31.2)
(9.7)
(468)
1.34
0.50
4900
(34.0)
(12.7)
(337)
1.34
0.63
3800
(34.0)
(16.0)
(261)
1.47
0.88
2700
(37.3)
(22.4)
(186)
Weld Fittings
13
Tube Socket Weld Fittings Ordering Information and Dimensions ■ Dimensions are for reference only and are subject to
change. ■ See Cleaning and Packaging, page 2, to order
automatic tube socket weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS‑06‑63.
Union D
D
Tube Socket Size
Precise machining of socket ensures proper tube fit.
Dimensions
Ordering Number
A
D
E
Tx
Dimensions, in. (mm)
Tx E A
Male Connector F flat
1/4
SS-4-TSW-6
0.75 (19.0)
0.28 (7.1)
3/8
SS-6-TSW-6
0.88 (22.4)
1/2
SS-8-TSW-6
1.06 (26.9)
Pressure Rating psig (bar)
0.19 (4.8)
0.48 (12.2) 10 700 (737)
0.31 (7.9)
0.28 (7.1)
0.60 (15.2)
8 100 (558)
0.38 (9.7)
0.41 (10.4) 0.73 (18.5)
6 600 (454)
3/4
SS-12-TSW-6
1.31 (33.3) 0.44 (11.2) 0.63 (16.0) 1.04 (26.4)
5 900 (406)
1
SS-16-TSW-6
1.44 (36.6) 0.62 (15.7) 0.88 (22.4) 1.36 (34.5)
5 600 (385)
Tube Socket Size
Male NPT Size
Ordering Number
Dimensions A
D
E
F
Tx
Dimensions, in. (mm) 1/4
Tx E D
3/8
A
1/2
Female Connector F flat
1/4
SS-4-TSW-1-4
1/4
SS-6-TSW-1-4
3/8
SS-6-TSW-1-6
1/2
SS-6-TSW-1-8
1/4
SS-8-TSW-1-4
3/8
SS-8-TSW-1-6
1/2
SS-8-TSW-1-8
1.15 (29.2) 1.25 (31.8)
0.28 (7.1)
psig (bar) 0.19 (4.8) 0.28 (7.1)
1.47 (37.3) 1.31 (33.3)
0.48 (12.2) 8000 (551)
11/16
8000 (551) 0.60 (15.2) 7800 (537)
7/8 0.28 (7.1) 0.38 (9.7)
1.53 (38.9)
0.38 (9.7) 0.41 (10.4)
Tube Socket Size
Female NPT Size
1/8
1/8
SS-2-TSW-7-2
0.83 (21.1)
1/8
SS-4-TSW-7-2
1.05 (26.7)
1/4
SS-4-TSW-7-4
1.18 (30.0)
1/4
SS-6-TSW-7-4
1.24 (31.5)
3/8
SS-8-TSW-7-6
1.36 (34.5)
1/2
SS-8-TSW-7-8
1.59 (40.4)
3/4
SS-12-TSW-7-12 1.73 (43.9) 0.44 (11.2) 0.63 (16.0)
Ordering Number
9/16 5/8
0.31 (7.9)
3/4
7700 (530) 0.73 (18.5) 6600 (454)
7/8
Dimensions A
E
F
Tx
Pressure Rating
0.10 (2.5)
0.09 (2.3)
9/16
0.29 (7.4)
6500 (447)
0.28 (7.1)
0.19 (4.8)
0.31 (7.9)
0.28 (7.1)
D
Dimensions, in. (mm) Tx E D
1/4 A
3/8 1/2 3/4
Pressure Rating
0.38 (9.7)
psig (bar)
0.41 (10.4)
9/16 3/4 3/4 7/8 1 1/16 1 5/16
0.48 (12.2)
6500 (447) 6600 (454)
0.60 (15.2) 6600 (454) 0.73 (18.5)
5300 (365) 4900 (337)
1.04 (26.4) 4600 (316)
14
Weld Fittings
Tube Socket Weld Fittings 90° Union Elbow L
Tube Socket Size
F flat
Dimensions
Ordering Number
D
E
F
L
Pressure Rating
Tx
Dimensions, in. (mm)
Tx E D
L D
90° Male Elbow L
SS-4-TSW-9
0.28 (7.1)
0.19 (4.8)
7/16
0.86 (21.8) 0.53 (13.5) 10 700 (737)
3/8
SS-6-TSW-9
0.31 (7.9)
0.28 (7.1)
1/2
1.04 (26.4) 0.64 (16.3)
8 100 (558)
1/2
SS-8-TSW-9
0.38 (9.7)
0.41 (10.4)
11/16
1.17 (29.7) 0.81 (20.6)
6 600 (454)
3/4
SS-12-TSW-9
0.44 (11.2) 0.63 (16.0)
1
1.56 (39.6) 1.12 (28.4)
5 900 (406)
1
SS-16-TSW-9
0.62 (15.7) 0.88 (22.4)
1 1/4
1.92 (48.8) 1.44 (36.6)
5 600 (385)
Tube Socket Size
F flat
Tx E
1/4 D
Male NPT Size 1/4 1/4
L1
3/8
3/8 1/2
90° Female Elbow F flat
L Tx E
1/2
1/2
Tube Socket Size
Female NPT Size
1/4 L1
D
1/4 1/4
Dimensions
Ordering Number
D
1/2 1/2
Tube Socket Size
F flat
Tx E
1/8 D
D
L
1/4 3/8
1/2
(7.1)
3/4 1
1/2
(4.8)
1/2
SS-6-TSW-2-6
0.31
0.28
(7.9)
(7.1)
11/16
SS-6-TSW-2-8
13/16
SS-8-TSW-2-8
0.38
0.41
(9.7)
(10.4)
D
E
13/16
(7.1)
SS-6-TSW-8-4
SS-8-TSW-8-8
SS-6-TSW-3 SS-8-TSW-3 SS-12-TSW-3 SS-16-TSW-3
11/16
(4.8)
0.31
0.28
(7.9)
(7.1)
0.38
0.41
(9.7)
(10.4)
SS-6-TSW-8-8
SS-4-TSW-3
Tx
Pressure Rating
0.79
1.05
0.48
psig (bar) 8000
(20.1)
(26.7)
(12.2)
(551)
1.04
1.05
0.64
8000
(26.4)
(26.7)
(16.3)
(551)
0.97
1.17
0.60
7800
(24.6)
(29.7)
(15.2)
(537)
1.02
1.45
0.60
7700
(25.9)
(36.8)
(15.2)
(530)
1.08
1.45
0.73
6600
(27.4)
(36.8)
(18.5)
(454)
L
L1
Tx
Pressure Rating
0.90
1.17
0.48
psig (bar) 7400
(22.9)
(29.7)
(12.2)
0.99
1.17
(25.1)
(29.7)
0.60
(509)
1.13
1.56
(15.2)
5700
(28.7)
(39.6)
1.19
1.56
0.73
5700
(30.2)
(39.6)
(18.5)
(392)
F
Dimensions, in. (mm) 0.19 0.28 SS-4-TSW-8-4
SS-2-TSW-3
L1
Dimensions
Ordering Number
Ordering Number
L
F
SS-6-TSW-2-4
A
1/2
E
Dimensions, in. (mm) 0.19 0.28 SS-4-TSW-2-4
3/8
Union Tee
psig (bar)
1/4
11/16 1 1
Dimensions A
D
E
Dimensions, in. (mm) 0.10 0.09 1.18 (30.0)
(2.5)
(2.3)
1.72
0.28
0.19
(43.7)
(7.1)
(4.8)
2.08
0.31
0.28
(52.8)
(7.9)
(7.1)
2.34
0.38
0.41
(59.4)
(9.7)
(10.4)
3.12
0.44
0.63
(79.2)
(11.2)
(16.0)
3.84
0.62
0.88
(97.5)
(15.7)
(22.4)
F 7/16 7/16 1/2 11/16 1 1 1/4
(509)
7400
(392)
L
Tx
Pressure Rating
0.59
0.29
psig (bar) 12 600
(15.0)
(7.4)
(868)
0.86
0.53
10 700
(21.8)
(13.5)
(737)
1.04
0.64
8 100
(26.4)
(16.3)
(558)
1.17
0.81
6 600
(29.7)
(20.6)
(454)
1.56
1.04
5 900
(39.6)
(26.4)
(406)
1.92
1.45
5 600
(48.8)
(36.8)
(385)
Weld Fittings
Tube Socket Weld Fittings Union Cross
Tube Socket Size
L
Dimensions
Ordering Number
A
Tx E
3/8 D
1/2 3/4
A
1
Tube Butt Weld to Tube Socket Weld
Tube OD
SS-4-TSW-4 SS-6-TSW-4 SS-8-TSW-4 SS-12-TSW-4 SS-16-TSW-4
Wall Thickness
(43.7)
(7.1)
(4.8)
2.08
0.31
0.28
(52.8)
(7.9)
(7.1)
2.34
0.38
0.41
(59.4)
(9.7)
(10.4)
3.12
0.44
0.63
(79.2)
(11.2)
(16.0)
3.84
0.62
0.88
(97.5)
(15.7)
(22.4)
Tube Socket Size
L
Tx
Pressure Rating
0.86
0.53
psig (bar) 10 700
(21.8)
(13.5)
(737)
1.04
0.64
8 100
(26.4)
(16.3)
(558)
1.17
0.81
6 600
(29.7)
(20.6)
(454)
1.56
1.20
5 900
(39.6)
(30.5)
(406)
1.92
1.45
5 600
(48.8)
(36.8)
(385)
F 7/16 1/2 11/16 1 1 1/4
Dimensions
Ordering Number
A
D
E
Tx
Pressure Rating
0.56
0.10
0.09
0.29
psig (bar) 12 600
Dimensions, in. (mm)
D
1/4 E
E
Dimensions, in. (mm) 0.28 0.19 1.72
F
1/4
D
Tx
3/8
0.08 (2.0)
0.07 (1.8)
A
1/2
3/4 1
0.09 (2.2)
0.11 (2.8)
0.13 (3.2)
1/8
SS-4-MTW-A-2TSW
1/4
SS-6-MTW-A-4TSW
1/4
SS-8-MTW-A-4TSW
3/8
SS-8-MTW-A-6TSW
1/2
SS-12-MTW-A-8TSW
1/2
SS-16-MTW-A-8TSW
(14.2)
(2.5)
(2.3)
(7.4)
(868)
0.75
0.28
0.19
0.48
8 200
(7.1)
(4.8)
(12.2)
(564)
0.28
0.19
0.50
(19.0)
0.88
(7.1)
(4.8)
(12.7)
7 500
(22.4)
0.31
0.33
0.60
(516)
(7.9)
(8.3)
(15.2)
1.12
0.38
0.41
0.75
(28.4)
(9.7)
(10.4)
(19.0)
6 300 (434)
1.38
0.38
0.41
0.73
5 300
(35.1)
(9.7)
(10.4)
(18.5)
(365)
Pipe Socket Weld Fittings Quality machining of all surfaces ensures consistent welding to pipe.
Ordering Information and Dimensions ■ Dimensions are for reference only and are subject to
change. ■ See Cleaning and Packaging, page 2, to order pipe
socket weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS‑06‑63.
Union D
D
P Pipe Size
Px P E
1/4 A
3/8 1/2 3/4 1
Ordering Number
Heavy wall, plus strength of material, ensures long life in severe service applications.
Dimensions E
Px
Pressure Rating
Dimensions, in. (mm) 0.39 1.06 SS-4-PSW-6
0.36
0.88
psig (bar) 8100
(26.9)
(9.9)
(9.1)
(22.4)
(558)
1.12
0.39
0.49
1.03
7100
(28.4)
(9.9)
(12.4)
(26.2)
(489)
1.12
0.39
0.62
1.25
6800
(28.4)
(9.9)
(15.7)
(31.8)
(468)
1.75
0.51
0.82
1.47
5800
(44.4)
(13.0)
(20.8)
(37.3)
(399)
1.75
0.51
1.05
1.86
6100
(44.4)
(13.0)
(26.7)
(47.2)
(420)
SS-6-PSW-6 SS-8-PSW-6 SS-12-PSW-6 SS-16-PSW-6
A
D
Socket depth equals or exceeds requirements of ASME B16.11 and ensures proper pipe .
15
Pipe Butt Weld Fittings Ordering Information and Dimensions
37 1/2° chamfer ensures proper weld (not included on 1/4 in. size).
■ Dimensions are for reference only and are subject to
change. ■ See Cleaning and Packaging, page 2, to order pipe
Male weld end can be butt or socket welded.
butt weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS‑06‑63.
Tube Socket Weld to Pipe Butt Weld
Tube OD
Pipe Size (Sch 80)
37 1/2°
D
E
Tx
Dimensions
Ordering Number
A
D
E
Tx
Dimensions, in. (mm) 1/4
A
3/8
1/2
3/4
1/4
SS-4-MPW-A-4TSW
0.88 (22.4)
1/2
SS-8-MPW-A-4TSW
1.12 (28.4)
3/8
SS-6-MPW-A-6TSW
1.03 (26.2)
1/2
SS-8-MPW-A-6TSW
1.12 (28.4)
3/4
SS-12-MPW-A-6TSW
1.50 (38.1)
1
SS-16-MPW-A-6TSW
1.38 (35.1)
3/8
SS-6-MPW-A-8TSW
1/2 3/4
Pressure Rating psig (bar)
0.28 (7.1)
0.19 (4.8)
0.48 (12.2)
10 300 (709) 7 800 (537) 8 100 (558)
0.31 (7.9)
0.28 (7.1)
0.60 (15.2)
1.00 (25.4)
0.38 (9.7)
0.42 (10.7)
SS-8-MPW-A-8TSW
1.19 (30.2)
0.38 (9.7)
0.41 (10.4)
SS-12-MPW-A-8TSW
1.50 (38.1)
0.38 (9.7)
0.41 (10.3)
1
SS-16-MPW-A-8TSW
1.56 (39.6) 0.44 (11.2)
0.38 (9.7)
3/4
SS-12-MPW-A-12TSW
1.50 (38.1) 0.44 (11.2) 0.62 (15.7) 1.05 (26.7)
7 800 (537) 6 600 (454) 6 000 (413) 6 600 (454)
0.73 (18.5)
6 600 (454) 6 600 (454) 6 000 (413) 5 900 (406)
Swagelok Orbital Welding System See the Swagelok Welding System M200 Power Supply catalog, MS‑02‑342, for more information.
Safe Product Selection When selecting a product, the total system design must be considered to ensure safe, trouble-free performance. Function, material compatibility, adequate ratings, proper installation, operation, and maintenance are the responsibilities of the system designer and .
Warranty Information Swagelok products are backed by The Swagelok Limited Lifetime Warranty. For a copy, visit swagelok.com or your authorized Swagelok representative.
Swagelok, Micro-Fit—TM Swagelok Company © 2009–2015 Swagelok Company Printed in U.S.A., AGS February 2015, R10 MS-01-149
We ld F i tti n gs Ultrahigh-Purity, Specially Cleaned, and Industrial
■ 1/8 to 1 in. and 6 to 18 mm ■ 316, 316L, 316L VAR, and 316L VIM-VAR stainless steel materials ■ Fittings for manual or automatic welding equipment
2
Weld Fittings
Cleaning and Packaging
Contents
Standard
Materials of Construction . . . . . . . . . . . . . . . . . . . . . . . 2 Cleaning and Packaging . . . . . . . . . . . . . . . . . . . . . . . . 2 Pressure Ratings Basis . . . . . . . . . . . . . . . . . . . . . . . . . 3 Micro-Fit® (Miniature Tube Butt Weld) Fittings . . . . . . . 3 Tube Butt Weld Fittings . . . . . . . . . . . . . . . . . . . . . . . . . 6 Automatic Tube Butt Weld Fittings . . . . . . . . . . . . . . . . 9 Automatic Tube Socket Weld Fittings . . . . . . . . . . . . . . 12 Tube Socket Weld Fittings . . . . . . . . . . . . . . . . . . . . . . . 13 Pipe Socket Weld Fittings . . . . . . . . . . . . . . . . . . . . . . . 15 Pipe Butt Weld Fittings . . . . . . . . . . . . . . . . . . . . . . . . . 16 Swagelok® Orbital Welding System . . . . . . . . . . . . . . . 16
Specifications
Bar Stock➀ SS
316L stainless steel
316L
316L VIM-VAR stainless steel
6LV➁
ASTM A479/ASME SA479 and ASTM A276 SEMI F20‑0305 Ultrahigh-Purity➂
Forgings➃ 316 stainless steel
SS
316L stainless steel
316L
Weld fittings are available cleaned and packaged in accordance with Swagelok Special Cleaning and Packaging (SC‑11), MS‑06‑63, to ensure compliance with product cleanliness requirements as stated in ASTM G93 Level C. To order, add ‑SC11 to the ordering number. Example: 6LV-4MW-6-2-SC11
Photovoltaic (SC‑06) Select weld fittings are available cleaned and packaged in accordance with Swagelok Photovoltaic Process Specification (SC‑06), MS‑06‑64, to meet the process requirements of solar cell production. To order, add -SC06 to the ordering number. Example: 6LV-4MW-6-2-SC06
Example: 6LV-4MW-6-2-P6
Designator
316 stainless steel
Special (SC‑11)
SC-06–cleaned weld fittings are available with controlled surface finishes and electropolishing. Wetted surfaces are finished to an average 5 µin. (0.13 µm) Ra. To order, add -P6 to the ordering number.
Materials of Construction Material
Weld fittings are cleaned in accordance with Swagelok Standard Cleaning and Packaging (SC-10), MS-06-62.
ASTM A182/ASME SA182 and ASTM A314
➀ Includes straight configurations and all Micro-Fit weld fittings. ➁ Straight Micro-Fit configurations are 316L VAR stainless steel/SEMI F20‑0305 High-Purity, 20 % minimum elongation allowed. ➂ 20 % minimum elongation allowed. ➃ Includes all elbows, crosses, and tees, excluding Micro-Fit weld fittings.
Additional Considerations Consult ASME Boiler and Pressure Vessel Code, ASME B31.1, ASME B31.3, or other applicable codes for information on weld setup, technique, and additional considerations for welded systems. The choice of fitting, pipe, and tubing material being welded is critical. Using the same materials will ensure the same coefficients of expansion and will reduce the possibility of poor welds, out-of-roundness, or dimensional changes that are detrimental to a good weld.
Threaded End Connections Pipe threads are based on the requirements of ASME B1.2.0.1 (NPT) and SAE AS71051 (ANPT) for tapered pipe threads.
Ultrahigh-Purity (SC‑01) Select weld fittings are available with controlled surface finishes, electropolished, and specially cleaned. Wetted surfaces are finished to an average 5 µin. (0.13 µm) Ra. For more information, see Swagelok Ultrahigh-Purity Process Specification (SC-01), MS-06-61. To order, add -P to the ordering number. Example: 6LV-4MW-6-2-P
Cleaning Process Availability
Fitting Type Micro-Fit (miniature tube butt weld)
Cleaning Process (Designator) UltrahighPhotovoltaic Special Purity (-SC11 ) (-SC06) (-P6) (-P) ✓
✓
✓
✓
Tube butt weld
✓
✓
✓
✓
Automatic tube butt weld
✓
✓
✓
✓
Automatic tube socket weld
✓
Tube socket weld
✓
Pipe socket weld
✓
Pipe butt weld
✓
Oxygen Service Hazards For more information about hazards and risks of oxygenenriched systems, see the Swagelok Oxygen System Safety Technical Report, MS‑06‑13.
Weld Fittings
3
Pressure Ratings Basis Catalog pressure ratings shown are for temperatures from –20 to 100°F (–28 to 37°C), which are based on an allowable stress value of 20 000 psi (1378 bar) in accordance with ASME B31.3 and ASME B31.1 for 316 stainless steel. 316L stainless steel material is controlled in accordance with Swagelok material specifications and possesses minimum room temperature tensile and yield strengths equivalent to 316 stainless steel.
Material Type
316 SS
Temperature, °F (°C)
Pressure derating factors for applications at temperatures greater than 100°F (37°C) were determined from these pressure codes and are listed in the table at right.
316L SS Factor
–20 (–28) to 100 (37)
1.00
1.00
200 (93)
1.00
0.83
400 (204)
0.96
0.77
600 (315)
0.85
0.67
800 (426)
0.79
0.62
1000 (537)
0.76
0.56
Examples:
Elevated-Temperature Factors
A 1/4 in. 316L VIM-VAR reducing union has a pressure rating of 5100 psig (351 bar), as shown in the table below. To obtain the pressure rating at 400°F (204°C), multiply 5100 psig (351 bar) by 0.77: 5100 psig (351 bar) 0.77 = 3927 psig (270 bar)
To determine elevated-temperature pressure ratings in accordance with B31.3 and B31.1, multiply the pressure ratings provided in the ordering number tables on the pages that follow by the factors in the table at right.
A 1/4 in. 316 SS tube socket weld union has a pressure rating of 10 700 psig (737 bar), as shown in the table on page 13. To obtain the pressure rating at 400°F (204°C), multiply 10 700 psig (737 bar) by 0.96: 10 700 psig (737 bar) 0.96 = 10 272 psig (707 bar) Alternative elevated-temperature factors may be chosen from ASME B31.3 or B31.1 at the ’s discretion.
Micro-Fit (Miniature Tube Butt Weld) Fittings Compact Design ■ Accommodates ■ Allows
Rounded body block helps prevent damage to other components during system fabrication or maintenance.
tubing systems requiring miniaturization
close component spacing
■ Provides
Marking identifies manufacturer, material, and, when applicable, ultrahigh-purity cleaning.
flow and service ratings equal to larger weld
fittings. Material heat code is roll stamped to ensure raw material traceability.
Ordering Information and Dimensions ■ Dimensions are for reference only and are subject to
change.
Ultrahigh-purity cleaning with average 5 µin. (0.13 µm) Ra surface finish is available. Standard surface finish is average 10 µin. (0.25 µm) Ra.
■ See Cleaning and Packaging, page 2, to order Micro-
Fit weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS‑06‑63; Photovoltaic Process Specification (SC‑06), MS‑06‑64; or Ultrahigh-Purity Process Specification (SC-01), MS-06-61.
Reducing Union B B1
A
Square, sharp, burrfree tube weld ends enhance alignment, maintain tube wall uniformity, and promote weld repeatability.
Ordering Number
Radiused junction allows for a smooth flow transition and eliminates pockets and entrapment zones.
Dimensions
Tube OD
Wall Thickness
Tube OD
Wall Thickness
1/4
0.035
1/8
0.028
6LV-4MW-6-2
3/8
0.035
1/4
0.035
6LV-6MW-6-4
0.75
0.42
0.25
3300 (227)
6LV-8MW-6-4
(19.0)
(10.7)
(6.4)
3700 (254)
A
B
B1
Dimensions, in. (mm)
1/2
0.049
1/4 3/8
0.035
6LV-8MW-6-6
Pressure Rating psig (bar) 5100 (351)
3300 (227)
4
Weld Fittings
Micro-Fit (Miniature Tube Butt Weld) Fittings 90° Union Elbow L
B
A F flat
L
Dimensions
Tube OD
Wall Thickness
Ordering Number
1/8
0.028
6LV-2MW-9
1/4
0.035
6LV-4MW-9
3/8
0.035
6LV-6MW-9
0.69 (17.5)
1/2
0.049
6LV-8MW-9
0.81 (20.6)
A
B
F
Pressure Rating
L
Dimensions, in. (mm)
psig (bar)
0.56 (14.2) 0.25 (6.4)
5/16
0.41 (10.4) 8500 (585)
5/16
0.41 (10.4) 5100 (351)
7/16
0.47 (11.9) 3300 (227)
9/16
0.53 (13.5) 3700 (254)
(5/16)
10.4 (0.41) 420 (6095)
(7/16)
11.9 (0.47) 310 (4499)
(7/16)
11.9 (0.47) 240 (3483)
(9/16)
13.5 (0.53) 200 (2902)
Dimensions, mm (in.) 6 8 10
6LV-6MMW-9 1.0
12
Reducing 90° Union Elbow
Tube OD
Wall Thickness
6LV-8MMW-9
17.5 (0.69)
6LV-10MMW-9
17.5 (0.69)
6LV-12MMW-9
20.6 (0.81)
Tube OD
Wall Thickness
A
6.4 (0.25)
Dimensions
Ordering Number
A
3/8
0.035
1/4
0.035
0.049
A
0.81
6
10
6
17.5 17.5 (0.69)
1.0
8
Tube OD
A
L1
9/16
Wall Thickness
1/4
(7/16)
6.4
20.6
(9/16)
(0.81)
6LV-12MMW-9-8M
A
A1
(20.6)
0.035
0.53
(254)
3300
11.9
bar (psig) 310
(0.47)
(4499)
11.9
240
(0.47)
(3483)
13.5
200
(0.53)
(2902)
B
B1
F
L
L1
Pressure Rating psig (bar)
0.45
0.61
(11.4)
0.41
0.50
(10.4)
(12.7)
5/16
(15.5)
0.66 (16.8)
6LV-4MW-9-03444
0.76 (19.3)
0.45 (11.4)
0.61 (15.5)
6LV-4MW-9-03445
0.81 (20.6)
0.50 (12.7)
0.66 (16.8)
B1
45° Union Elbow
Dimensions
Tube OD
Wall Thickness
Ordering Number
1/4
0.035
6LV-4MW-5
3/8
0.035
6LV-6MW-5
0.56 (14.2)
1/2
0.049
6LV-8MW-5
0.64 (16.3)
A
B
F
Dimensions, in. (mm) 0.47 (11.9) 0.25 (6.4)
(227)
(13.5)
Dimensions
Ordering Number
Dimensions, in. (mm) 0.76 6LV-4MW-9-03442 0.56 (19.3) 0.25 (14.2) (6.4) 0.81 6LV-4MW-9-03443 A1
(11.9)
(0.25)
6LV-12MMW-9-6M
12
F flat
psig (bar) 3300 3700
(7/16)
(0.69)
6LV-10MMW-9-6M
6
B
0.47
(227)
6LV-8MMW-9-6M
1.0
A L
Pressure Rating
Dimensions, mm (in.) 8
Extended Leg 90° Union Elbow
(6.4)
(20.6)
6LV-8MW-9-6
B
F flat
F flat
L
0.25
6LV-8MW-9-4
3/8
7/16
(17.5)
0.035
L
B
F
0.69
6LV-6MW-9-4
1/4 1/2
L
B
Dimensions, in. (mm)
L
B
bar (psig)
14.2 (0.56)
L
Pressure Rating psig (bar)
5/16
0.41 (10.4) 5100 (351)
7/16
0.47 (11.9) 3300 (227)
9/16
0.53 (13.5) 3700 (254)
5100 (351)
Weld Fittings
5
Micro-Fit (Miniature Tube Butt Weld) Fittings Union Tee A
L
F flat
Dimensions
Tube OD
Wall Thickness
Ordering Number
1/8
0.028
6LV-2MW-3
1/4
0.035
6LV-4MW-3
3/8
0.035
6LV-6MW-3
0.94 (23.9)
1/2
0.049
6LV-8MW-3
1.06 (26.9)
B
A
B
F
Pressure Rating
L
Dimensions, in. (mm)
L
psig (bar)
0.82 (20.8) 0.25 (6.4)
5/16
0.41 (10.4) 8500 (585)
5/16
0.41 (10.4) 5100 (351)
7/16
0.47 (11.9) 3300 (227)
9/16
0.53 (13.5) 3700 (254)
(5/16)
10.4 (0.41) 420 (6095)
(7/16)
11.9 (0.47) 310 (4499)
(7/16)
11.9 (0.47) 240 (3483)
(9/16)
13.5 (0.53) 200 (2902)
Dimensions, mm (in.) 6 8
1.0
10 12
Extended Branch Leg Union Tee B
L
Tube OD
A
B1
L1
0.035
B
23.9 (0.94) 23.9 (0.94)
6LV-12MMW-3
26.9 (1.06)
Ordering Number
6.4 (0.25)
Dimensions A
A1
B
Dimensions, in. (mm) 0.82 0.76 0.25 6LV-4MW-3-03446 (20.8)
Tube Wall OD Thickness
A
L1
B1
F flat
6LV-8MMW-3 6LV-10MMW-3
bar (psig)
B1 0.45
(19.3)
(6.4)
(11.4)
A
A1
B
1/4
A1
0.035
Ordering Number
F flat
L
Dimensions, in. (mm) 1.96 0.56 0.83 6LV-4MW-3-03921
(49.8) (14.2) (21.1)
Pressure Rating
0.41
0.61
psig (bar) 5100
5/16
(10.4)
(15.5)
(351)
B1
L
L1
Pressure Rating
0.98
0.41
psig (bar) 5100
F
0.25 (6.4)
5/16
(24.9) (10.4)
B
Ordering Number
Dimensions A
B
F
L
Pressure Rating
0.47
psig (bar) 3300
Dimensions, in. (mm)
L
0.035
1/4 1/4
1/2
(351)
There may be a slight mismatch between run ends at drill intersection.
Tube Wall Tube Wall OD Thickness OD Thickness 3/8
B
L1
Dimensions
Reducing Tee A
L
F
A1
Extended Run Leg Union Tee L
20.8 (0.82)
Wall Thickness
1/4
F flat
6LV-6MMW-3
6LV-6MW-3-6-4 0.035
6LV-8MW-3-8-4
0.049 3/8
6LV-8MW-3-8-6
0.94
7/16
(23.9)
(11.9)
0.25 1.06
(6.4)
(26.9)
9/16
0.53
(254)
(13.5)
3300
11.9
bar (psig) 240
(0.47)
(3483)
(227)
Dimensions, mm (in.) 10
6 1.0
6
6LV-10MMW-3-10M-6M 1.0
6LV-12MMW-3-12M-6M
12 8
6LV-12MMW-3-12M-8M
(227)
3700
23.9
(7/16)
(0.94)
6.4 26.9 (1.06)
(0.25)
(9/16)
13.5
200
(0.53)
(2902)
6
Weld Fittings
Micro-Fit (Miniature Tube Butt Weld) Fittings Union Cross A
Tube OD
Wall Thickness
1/8
0.028
6LV-2MW-4
1/4
0.035
6LV-4MW-4
A
B
F
Pressure Rating
L
Dimensions, in. (mm)
F flat
L
Dimensions
Ordering Number
B
psig (bar) 5/16
0.41 (10.4) 8500 (585)
5/16
0.41 (10.4) 5100 (351)
7/16
0.47 (11.9) 3300 (227)
9/16
0.53 (13.5) 3700 (254)
(5/16)
10.4 (0.41) 420 (6095)
(7/16)
11.9 (0.47) 310 (4499)
(7/16)
11.9 (0.47) 240 (3483)
(9/16)
13.5 (0.53) 200 (2902)
0.82 (20.8)
3/8
0.035
6LV-6MW-4
0.94 (23.9)
1/2
0.049
6LV-8MW-4
1.06 (26.9)
0.25 (6.4)
Dimensions, mm (in.) 6
6LV-6MMW-4
8
6LV-8MMW-4
1.0
10
Tribow
Tube OD
6LV-12MMW-4
26.9 (1.06)
Wall Thickness
Ordering Number
B
L
1/4 F flat
0.035
3/8
A
0.035
1/2
This unique design has weld ends in three planes at 90° to each other. It permits greater flexibility in deg systems, especially where space is limited.
23.9 (0.94)
6LV-10MMW-4
12
0.049
6
1.0
bar (psig)
20.6 (0.81) 6.4 (0.25)
Dimensions A
B
F
Dimensions, in. (mm) 0.56 6LV-4MW-91
5/16
(14.2)
6LV-6MW-91 6LV-8MW-91
0.69
0.25
(17.5)
(6.4)
0.81
7/16 9/16
(20.6)
Dimensions, mm (in.) 14.2 6LV-6MMW-91
6.4
(0.56)
(0.25)
(5/16)
L
Pressure Rating
0.41
psig (bar) 5100
(10.4)
(351)
0.47
3300
(11.9)
(227)
0.53
3700
(13.5)
(254)
10.4
bar (psig) 420
(0.41)
(6095)
Tube ends are machined with a square face and corners to enhance alignment and maintain tube wall uniformity.
Tube Butt Weld Fittings Ordering Information and Dimensions ■ Dimensions are for reference only and are subject to
change. ■ See Cleaning and Packaging, page 2, to order tube
butt weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS‑06‑63; Photovoltaic Process Specification (SC‑06), MS‑06‑64; or Ultrahigh-Purity Process Specification (SC-01), MS-06-61.
90° Union Elbow B
L
Tube OD
Wall Thickness
1/4
0.035
316L-4TB7-9
3/8
0.035
316L-6TB7-9
1/2
0.049
316L-8TB7-9
3/4
0.049
316L-12TB7-9
1.0
316L-6MTB7-9
F flat
L
Standard surface finish is average 10 µin. (0.25 µm) Ra. Controlled surface finish is available for ultrahigh-purity systems.
Ordering Number
Dimensions B
F
Dimensions, in. (mm)
0.75 (19.0)
8
1.0
316L-8MTB7-9
10
1.0
316L-10MTB7-9
12
1.0
18
1.5
L
Pressure Rating psig (bar)
7/16
1.23 (31.2) 5100 (351)
7/16
1.20 (30.5) 3300 (227)
11/16
1.34 (34.0) 3700 (254)
15/16
1.46 (37.1) 2400 (165)
(7/16)
31.2 (1.23) 420 (6095)
Dimensions, mm (in.) 6
Precisely finished diameter matches tube diameter.
bar (psig) (7/16)
31.2 (1.23) 310 (4499)
(11/16)
34.0 (1.34) 240 (3483)
316L-12MTB7-9
(11/16)
34.0 (1.34) 200 (2902)
316L-18MTB7-9
(15/16)
37.6 (1.48) 200 (2902)
19.0 (0.75)
Weld Fittings
Tube Butt Weld Fittings Reducing Union
B
A
Tube OD
Wall Thickness
Tube OD
Wall Thickness
3/8
0.035
1/4
0.035
1/2
0.049
3/4
0.049
Dimensions
Ordering Number
A
B
Dimensions, in. (mm)
B
1
0.065
1/4 3/8 1/2 1/2 3/4
0.035 0.049 0.049
psig (bar)
316L-6TB7-6-4
3300 (227)
316L-8TB7-6-4
3700 (254)
316L-8TB7-6-6
1.50
0.75
3300 (227)
316L-12TB7-6-8
(38.1)
(19.0)
2400 (165)
316L-16TB7-6-8
2400 (165)
316L-16TB7-6-12
Dimensions, mm (in.) 10
1.0
6 8
1.0
6 12
1.0
8 10
Union Tee L F flat
L
A B
6
240 (3483)
316L-10MTB7-6-8M 316L-12MTB7-6-8M 316L-12MTB7-6-10M
1.0
1.5
Tube OD
Wall Thickness
1/4
0.035
316L-4TB7-3
2.46 (62.5)
3/8
0.035
316L-6TB7-3
2.40 (61.0)
Ordering Number
38.1
19.0
(1.50)
(0.75)
316L-18MTB7-6-6M
18
12
bar (psig)
316L-10MTB7-6-6M 316L-12MTB7-6-6M
1.0
Dimensions A
B
1/2
0.049
316L-8TB7-3
2.68 (68.1)
3/4
0.049
316L-12TB7-3
2.91 (73.9)
F
316L-6MTB7-3
8
1.0
316L-8MTB7-3
62.5 (2.46)
1.0
316L-10MTB7-3
67.8 (2.67)
12
1.0
316L-12MTB7-3
67.8 (2.67)
18
1.5
316L-18MTB7-3
74.9 (2.95)
Pressure Rating psig (bar)
1.23 (31.2) 5100 (351)
0.75
7/16
1.20 (30.5) 3300 (227)
(19.0)
11/16
1.34 (34.0) 3700 (254)
15/16
1.46 (37.1) 2400 (165)
(7/16)
31.2 (1.23) 420 (6095)
bar (psig)
62.5 (2.46)
10
L
7/16
Dimensions, mm (in.) 1.0
200 (2902)
200 (2902)
316L-18MTB7-6-12M
Dimensions, in. (mm)
6
Pressure Rating
19.0 (0.75)
(7/16)
31.2 (1.23) 310 (4499)
(11/16)
34.0 (1.34) 240 (3483)
(11/16)
34.0 (1.34) 200 (2902)
(15/16)
37.6 (1.48) 200 (2902)
7
8
Weld Fittings
Tube Butt Weld Fittings Reducing Tee L F flat
Tube Wall Tube Wall OD Thickness OD Thickness
A
Dimensions
Ordering Number
A
B
F
L
L1
Pressure Rating
1.20
1.23
psig (bar) 3300
Dimensions, in. (mm)
B
3/8
0.035
1/4
316L-6TB7-3-6-4
1/4
L1
1/2
3/8
316L-8TB7-3-8-4 0.035
3/8
2.67 (67.8)
316L-8TB7-3-8-6
0.75
11/16
(30.5) (31.2)
(227)
1.34
3700
1.34 (34.0) 1.35
3300
(34.3)
(227)
(34.0)
(19.0)
316L-12TB7-3-12-6
2.91
15/16
(73.9)
316L-12TB7-3-12-4
1.46 (34.3) 1.48
(37.1)
6
316L-8MTB7-3-8M-6M
6
316L-10MTB7-3-10M-6M
62.2
8
1.0
(2.67)
316L-12MTB7-3-12M-6M
8
316L-12MTB7-3-12M-8M
L
A
Tube OD
Wall Thickness
1/4
0.035
Ordering Number
19.0
67.8
F flat
B
B
F
L
7/16
1.23 (31.2) 5100 (351)
0.035
316L-6TB7-4
2.39 (60.7) 0.75 (19.0)
7/16
1.20 (30.5) 3300 (227)
0.049
316L-8TB7-4
2.61 (66.3) 0.75 (19.0)
11/16
1.34 (34.0) 3700 (254)
(7/16)
31.3 (1.23) 420 (6095)
(7/16)
31.3 (1.23) 310 (4499)
(5/8)
34.0 (1.34) 240 (3483)
(5/8)
34.0 (1.34) 200 (2902)
8
1.0
ATW Weld Ring ATW weld rings are used with tube butt weld fittings. The ring helps align weld ts and adds material to the weld zone during manual or orbital welding.
62.2 (2.45)
316L-8MTB7-4
62.2 (2.45)
bar (psig)
19.0 (0.75)
316L-12MTB7-4 64.8 (2.55)
Tube OD 1/4 3/8 1/2
N
316L-6MTB7-4
316L-10MTB7-4 64.8 (2.55)
12
M typical
Pressure Rating
3/8
10
Tx
34.0 (1.34)
psig (bar)
2.45 (62.2) 0.75 (19.0)
Dimensions, mm (in.)
E
34.0 (1.34)
1/2 6
L
Ordering Number
Dimensions E
M
N
Dimensions, in. (mm) 0.20 316L-4-ATW-R
316L-8-ATW-R
Tx 0.28
(5.1)
316L-6-ATW-R
bar (psig) 310 (4499)
(7.1)
0.32
0.02
0.01
0.41
(8.1)
(0.51)
(0.25)
(10.4)
0.42
0.54
(10.7)
(13.7)
(3483)
200 (2902)
(11/16)
(2.67)
Dimensions, in. (mm) 316L-4TB7-4
(11/16)
Dimensions A
31.3 (1.23)
(0.75)
12
Union Cross
(165)
240 67.8
316L-10MTB7-3-10M-8M
6
(7/16)
(2.45)
10 1.0
2400
(37.6)
Dimensions, mm (in.) 8
(254)
1.35
0.049 1/4
7/16
(60.7)
0.049
B
3/4
2.39
200 (2902)
Weld Fittings
Automatic Tube Butt Weld Fittings
9
Precisely finished diameter matches tube diameter.
Ordering Information and Dimensions ■ Dimensions are for reference only and are subject to
change. Standard surface finish is average 10 µin. (0.25 µm) Ra. Controlled surface finish is available for ultrahigh-purity systems.
■ See Cleaning and Packaging, page 2, to order
automatic tube butt weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC‑11), MS‑06‑63; Photovoltaic Process Specification (SC‑06), MS‑06‑64; or Ultrahigh-Purity Process Specification (SC‑01), MS-06-61.
Locator Union A
Tube OD B
1/4 3/8
F
Union A
Dimensions
Ordering Number
A
B
Dimensions, in. (mm) 1.69 316L-4-ATW-6L
D Tx
D
Wall Thickness
Integral filler ring aids in alignment.
0.035
(42.9)
0.035
316L-6-ATW-6L 316L-8-ATW-6L
D
F
Tx
Pressure Rating
0.02
0.36
0.29
psig (bar) 5100
(0.51)
(9.1)
(7.4)
(351)
1.71
0.75
0.03
0.42
0.41
3300
(43.4)
(19.0)
(0.76)
(10.7)
(10.4)
(227)
1.73
0.04
0.60
0.55
3700
(43.9)
(1.0)
(15.2)
(14.0)
(254)
1/2
0.049
Tube OD
Wall Thickness
1/4
0.035
316L-4-ATW-6
1.00 (25.4) 0.02 (0.51) 0.29 (7.4)
3/8
0.035
316L-6-ATW-6
1.00 (25.4) 0.03 (0.76) 0.41 (10.4) 3300 (227)
1/2
0.049
316L-8-ATW-6
1.00 (25.4) 0.04 (1.0)
0.55 (14.0) 3700 (254)
3/4
0.049
316L-12-ATW-6
1.00 (25.4) 0.04 (1.0)
0.80 (20.3) 2400 (165)
1
0.065
316L-16-ATW-6
1.25 (31.8) 0.04 (1.0)
1.06 (26.9) 2400 (165)
Dimensions
Ordering Number
A
D
Pressure Rating
Tx
Dimensions, in. (mm)
Tx
psig (bar) 5100 (351)
Dimensions, mm (in.)
Reducing Union A
D Tx
B
1.0
316L-6-MATW-6
0.51 (0.02) 6.9 (0.27)
420 (6095)
8
1.0
316L-8-MATW-6
0.76 (0.03) 8.9 (0.35)
310 (4499)
10
1.0
316L-10-MATW-6
0.76 (0.03) 10.9 (0.43)
240 (3483)
12
1.0
316L-12-MATW-6
1.0 (0.04) 13.2 (0.52)
200 (2902)
18
1.5
316L-18-MATW-6
1.0 (0.04) 19.3 (0.76)
200 (2902)
Tube Wall Tube Wall OD Thickness OD Thickness D1 Tx1
bar (psig)
6
31.8 (1.25)
Ordering Number
Dimensions Tx1
Pressure Rating
1.58 0.75 0.03 0.02 0.41 0.29
psig (bar) 3300
A
B
D
D1
Tx
Dimensions, in. (mm) 3/8
0.035
1/4
0.035
1/4 1/2
0.049
316L-8-ATW-6-4 0.035
3/8 3/4
0.049
316L-6-ATW-6-4
1/2
316L-8-ATW-6-6 0.049
316L-12-ATW-6-8
(40.1) (19.0) (0.76) (0.51) (10.4)
(7.4)
(227)
0.29
3700
1.58 0.75 0.04 (0.51) 0.55 (7.4) (1.0) 0.03 (14.0) 0.41
3300
0.02 (40.1) (19.0)
(0.76)
(10.4)
(227)
1.62 0.75 0.04 0.04 0.80 0.55
2400
(41.1) (19.0)
(1.0)
(1.0)
(20.3) (14.0)
Dimensions, mm (in.) 8
6 1.0
6
316L-8-MATW-6-6M 1.0
316L-12-MATW-6-6M
12 8
316L-12-MATW-6-8M
(254)
39.9
0.76 0.51
(1.57)
(0.03) (0.02) (0.35) (0.27)
40.1 19.0 (1.58) (0.75)
40.4 (1.59)
0.51
8.9
6.8
(165)
bar (psig) 310 (4499)
6.8
1.0 (0.02) 13.2 (0.27) (0.04) 0.76 (0.52) 8.9 (0.03) (0.35)
200 (2902)
10
Weld Fittings
Automatic Tube Butt Weld Fittings Swagelok Tube Fitting to Automatic Tube Weld Connector
Tube OD
A D
1/4
D1
B
3/8
Tx
1/2
90° Union Elbow D
B
Tube OD
L
Tube OD
Wall Thickness
1/4
0.035
3/8
0.035
1/2
0.049
Wall Thickness
1/4
0.035
3/8
L
0.035
1/2
316L-8-ATW-6-810
316L-12-ATW-9
0.065
316L-16-ATW-9
D1
Tx
Pressure Rating
0.60
0.02
0.29
psig (bar) 5100
(15.2)
(0.51)
(7.4)
(351)
1.84
0.75
0.66
0.03
0.41
3300
(46.7)
(19.0)
(16.8)
(0.76)
(10.4)
(227)
1.99
0.90
0.04
0.55
3700
(50.5)
(22.9)
(1.0)
(14.0)
(254)
Dimensions
Ordering Number
316L-8-ATW-9
0.049
1
(44.2)
316L-6-ATW-6-600
D
B
Dimensions, in. (mm) 1.74 316L-4-ATW-6-400
316L-6-ATW-9
0.049
3/4
A
B
D
Dimensions, in. (mm) 0.02 0.75 316L-4-ATW-9
F flat
Tx
Dimensions
Ordering Number
(19.0)
(0.51)
0.75
0.03
(19.0)
(0.76)
0.75
0.04
(19.0)
(1.0)
0.75
0.04
(19.0)
(1.0)
0.96
0.04
(24.4)
(1.0)
L
Tx
Pressure Rating
1.25
0.29
psig (bar) 5100
F 7/16 7/16 11/16 15/16 1 1/4
(31.8)
(7.4)
(351)
1.23
0.41
3300
(31.2)
(10.4)
(227)
1.38
0.55
3700
(35.1)
(14.0)
(254)
1.50
0.80
2400
(38.1)
(20.3)
(165)
1.89
1.06
2400
(48.0)
(26.9)
(165)
Dimensions, mm (in.) 6
1.0
316L-8-MATW-9
10
1.0
316L-10-MATW-9
12
1.0
316L-12-MATW-9
18
1.5
316L-18-MATW-9
Tube OD
A
Tx
L
Wall Thickness
D
B
0.51
316L-6-MATW-9
8
Union Tee L F flat
1.0
(0.02)
0.76 (0.03)
19.0
0.76
(0.75)
(0.03)
Ordering Number
1.0 (0.04)
1.0 (0.04)
(7/16) (7/16) (11/16) (11/16) (15/16)
B
1/4
0.035
3/8
0.035
316L-6-ATW-3
1/2
0.049
316L-8-ATW-3
3/4
0.049
316L-12-ATW-3
1
0.065
316L-16-ATW-3
1.0 1.0
316L-8-MATW-3
10
1.0
316L-10-MATW-3
12
1.0
316L-12-MATW-3
18
1.5
316L-18-MATW-3
(0.27)
(5100)
32.0
8.9
227
(1.26)
(0.35)
(3300)
34.8
10.9
254
(1.37)
(0.43)
(3700)
35.1
13.2
199
(1.38)
(0.52)
(2888)
38.6
19.3
206
(1.52)
(0.76)
(2989)
D 0.02
(63.5)
(19.0)
(0.51)
2.46
0.75
0.03
(62.5)
(19.0)
(0.76)
2.76
0.75
0.04
(70.1)
(19.0)
(1.0)
3.00
0.75
0.04
(76.2)
(19.0)
(1.0)
3.78
0.96
0.04
(96.0)
(24.4)
(1.0)
Dimensions, mm (in.) 63.5 316L-6-MATW-3
8
6.9
(1.25)
Dimensions A
Dimensions, in. (mm) 0.75 2.50 316L-4-ATW-3
6
31.8
bar (psig) 351
0.51
(2.50)
(0.02)
64.0
0.76
(2.52)
(0.03)
69.6
19.0
0.76
(2.74)
(0.75)
(0.03)
70.1
1.0
(2.76)
(0.04)
77.2
1.0
(3.04)
(0.04)
F 7/16 7/16 11/16 15/16 1 1/4
(7/16) (7/16) (11/16) (11/16) (15/16)
L
Tx
Pressure Rating
1.25
0.29
psig (bar) 5100
(31.8)
(7.4)
(351)
1.23
0.41
3300
(31.2)
(10.4)
(227)
1.38
0.55
3500
(35.1)
(14.0)
(241)
1.50
0.80
2400
(38.1)
(20.3)
(165)
1.89
1.06
2400
(48.0)
(26.9)
(165)
31.8
6.9
bar (psig) 454
(1.25)
(0.27)
(6589)
32.0
8.9
323
(1.26)
(0.35)
(4687)
34.8
10.9
254
(1.37)
(0.43)
(3686)
35.1
13.2
206
(1.38)
(0.52)
(2989)
38.6
19.3
206
(1.52)
(0.76)
(2989)
Weld Fittings
11
Automatic Tube Butt Weld Fittings Reducing Tee
A
F flat
L
D
B Tx
K B
D1
Tube OD
Wall Tube Wall Thickness OD Thickness
3/8
0.035
1/4
Dimensions
Ordering Number
A
(62.5)
0.035
316L-8-ATW-3-8-4
0.035
3/8 3/4
12
1.0
6
B
L
K
1/4
0.035
3/8 L
1/2
Tx1
Pressure Rating
1.25
1.23
0.41
0.29
psig (bar) 3300
(7.4)
(227)
0.29
3700
(35.1) 1.38 0.55 (7.4) 0.04 (0.51) 11/16 (1.0) 0.03 1.37 (35.1) (14.0) 0.41
3300
(34.8)
(10.4)
(11/16)
34.5
35.1
13.2
6.9
(1.36) (1.38) (0.52) (0.27)
Dimensions A
316L-8-ATW-3-8TB7-8A
2.43
(227)
2400 (165)
(14.0)
0.51 (0.02)
Ordering Number
(254)
0.41
(1.0)
316L-6-ATW-3-6TB7-6A
0.049
Tx
1.38
B
D
(63.0)
0.035
L
(31.8) (31.2) (10.4)
Dimensions, in. (mm) 2.48 316L-4-ATW-3-4TB7-4A
B
7/16
K
0.04 (0.76) 1.50 1.50 0.80 (10.4) 15/16 (1.0) 0.04 (38.1) (38.1) (20.3) 0.55
3.00
(2.76) (0.75)
Tube Wall OD Thickness F
0.02
(0.76)
Dimensions, mm (in.) 70.1 19.0 316L-12-MATW-3-12M6M
Manifold Tee A
0.75
(76.2)
316L-12-ATW-3-12-8
1.0
F
0.03
316L-12-ATW-3-12-6
0.049
0.03
(19.0)
0.049 1/2
D1
(0.76) (0.51)
2.76 (70.1)
316L-8-ATW-3-8-6
0.035
D
0.02
0.049 3/8
B
Dimensions, in. (mm) 2.46 316L-6-ATW-3-6-4
0.035
1/4 1/2
D
Tx1
0.75
0.02 (0.51)
0.03
(61.7) (19.0) (0.76)
2.72
0.04
(69.1)
(1.0)
F 7/16 11/16 11/16
bar (psig) 200 (2902)
K
L
Tx
Pressure Rating
1.23
1.25
0.29
psig (bar) 5100
(31.2) (31.8)
(7.4)
(351)
1.23
0.41
3300
1.20
(30.5) (31.2) (10.4)
(227)
1.38
0.55
3700
(34.0) (35.1) (14.0)
(254)
1.34
Tx
Reducing Tee
A F flat
L
B
D Tx
K B
Tube OD
Wall Thickness
Tube OD
3/8
0.035
1/4 1/4
1/2
Wall Thickness
Ordering Number
B
Dimensions, in. (mm) 2.46
316L-6-ATW-3-6A-4TB7 0.035
316L-8-ATW-3-8A-4TB7
0.049 3/8
Dimensions A
316L-8-ATW-3-8A-6TB7
D 0.03
(62.5)
(0.76)
F 7/16
0.75 2.76 (70.1)
(19.0)
K
L
Tx
Pressure Rating
1.23
1.23
0.41
psig (bar) 3300
(31.2)
(31.2)
(10.4)
0.04 (1.0)
11/16
(227)
3700
1.36 (34.5)
1.38
0.55
(254)
1.35
(35.1)
(14.0)
3300
(34.3)
(227)
12
Weld Fittings
Automatic Tube Butt Weld Fittings Union Cross
Tube OD
A
L
1/4 F flat
D
B Tx
3/8 1/2
Wall Thickness 0.035 0.035 0.049
L
6 1.0 8
Dimensions
Ordering Number
A
B
D
Dimensions, in. (mm) 2.50 316L-4-ATW-4
0.02
(63.5)
316L-6-ATW-4 316L-8-ATW-4
7/16
(0.51)
2.46
0.75
0.03
(62.5)
(19.0)
(0.76)
2.70
0.04
(68.6)
(1.0)
Dimensions, mm (in.) 63.5 316L-6-MATW-4 (2.50) 19.0 (0.75) 64.0 316L-8-MATW-4
L
Tx
Pressure Rating
1.25
0.29
psig (bar) 5100
F
7/16 5/8
(31.8)
(7.4)
(351)
1.23
0.41
3300
(31.2)
(10.4)
(227)
1.35
0.55
3700
(34.3)
(14.0)
(254)
6.9
bar (psig) 420
31.8
(0.27)
(6095)
(1.25)
8.9
310
(0.35)
(4499)
0.51 (0.02)
(7/16)
0.76
(2.52)
(0.03)
Automatic Tube Socket Weld Fittings
Thin wall reduces weld heat input.
Ordering Information and Dimensions ■ Dimensions are for reference only and are subject to
change. ■ See Cleaning and Packaging, page 2, to order
automatic tube socket weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS‑06‑63. Precise machining of socket ensures proper tube fit.
Union
Tube OD
A
1/4
D
Union Tee A B
A
D
E
Tx
Pressure Rating
0.19 (4.8)
0.38 (9.7)
6800 (468)
0.50 (12.7) 4900 (337)
Dimensions, in. (mm)
Tx
E
Dimensions
Ordering Number 316L-4-ASW-6
3/8
316L-6-ASW-6
1.00
0.31 (7.9)
0.28 (7.1)
1/2
316L-8-ASW-6
(25.4)
0.38 (9.7)
0.41 (10.4) 0.63 (16.0) 3800 (261)
3/4
316L-12-ASW-6
Tube OD
Ordering Number
L F flat
1/4
Tx E D L
psig (bar)
0.28 (7.1)
3/8 1/2 3/4
316L-4-ASW-3 316L-6-ASW-3 316L-8-ASW-3 316L-12-ASW-3
0.44 (11.2) 0.63 (16.0) 0.88 (22.4) 2700 (186)
Dimensions A
B
D
E
Dimensions, in. (mm) 0.28 2.46
0.19
(62.5)
(7.1)
(4.8)
2.68
0.31
0.28
(68.1)
0.75
(7.9)
(7.1)
2.68
(19.0)
0.38
0.41
(68.1)
(9.7)
(10.4)
2.94
0.44
0.63
(74.7)
(11.2)
(16.0)
F 7/16 11/16 11/16 15/16
L
Tx
Pressure Rating
1.23
0.38
psig (bar) 6800
(31.2)
(9.7)
(468)
1.34
0.50
4900
(34.0)
(12.7)
(337)
1.34
0.63
3800
(34.0)
(16.0)
(261)
1.47
0.88
2700
(37.3)
(22.4)
(186)
Weld Fittings
13
Tube Socket Weld Fittings Ordering Information and Dimensions ■ Dimensions are for reference only and are subject to
change. ■ See Cleaning and Packaging, page 2, to order
automatic tube socket weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS‑06‑63.
Union D
D
Tube Socket Size
Precise machining of socket ensures proper tube fit.
Dimensions
Ordering Number
A
D
E
Tx
Dimensions, in. (mm)
Tx E A
Male Connector F flat
1/4
SS-4-TSW-6
0.75 (19.0)
0.28 (7.1)
3/8
SS-6-TSW-6
0.88 (22.4)
1/2
SS-8-TSW-6
1.06 (26.9)
Pressure Rating psig (bar)
0.19 (4.8)
0.48 (12.2) 10 700 (737)
0.31 (7.9)
0.28 (7.1)
0.60 (15.2)
8 100 (558)
0.38 (9.7)
0.41 (10.4) 0.73 (18.5)
6 600 (454)
3/4
SS-12-TSW-6
1.31 (33.3) 0.44 (11.2) 0.63 (16.0) 1.04 (26.4)
5 900 (406)
1
SS-16-TSW-6
1.44 (36.6) 0.62 (15.7) 0.88 (22.4) 1.36 (34.5)
5 600 (385)
Tube Socket Size
Male NPT Size
Ordering Number
Dimensions A
D
E
F
Tx
Dimensions, in. (mm) 1/4
Tx E D
3/8
A
1/2
Female Connector F flat
1/4
SS-4-TSW-1-4
1/4
SS-6-TSW-1-4
3/8
SS-6-TSW-1-6
1/2
SS-6-TSW-1-8
1/4
SS-8-TSW-1-4
3/8
SS-8-TSW-1-6
1/2
SS-8-TSW-1-8
1.15 (29.2) 1.25 (31.8)
0.28 (7.1)
psig (bar) 0.19 (4.8) 0.28 (7.1)
1.47 (37.3) 1.31 (33.3)
0.48 (12.2) 8000 (551)
11/16
8000 (551) 0.60 (15.2) 7800 (537)
7/8 0.28 (7.1) 0.38 (9.7)
1.53 (38.9)
0.38 (9.7) 0.41 (10.4)
Tube Socket Size
Female NPT Size
1/8
1/8
SS-2-TSW-7-2
0.83 (21.1)
1/8
SS-4-TSW-7-2
1.05 (26.7)
1/4
SS-4-TSW-7-4
1.18 (30.0)
1/4
SS-6-TSW-7-4
1.24 (31.5)
3/8
SS-8-TSW-7-6
1.36 (34.5)
1/2
SS-8-TSW-7-8
1.59 (40.4)
3/4
SS-12-TSW-7-12 1.73 (43.9) 0.44 (11.2) 0.63 (16.0)
Ordering Number
9/16 5/8
0.31 (7.9)
3/4
7700 (530) 0.73 (18.5) 6600 (454)
7/8
Dimensions A
E
F
Tx
Pressure Rating
0.10 (2.5)
0.09 (2.3)
9/16
0.29 (7.4)
6500 (447)
0.28 (7.1)
0.19 (4.8)
0.31 (7.9)
0.28 (7.1)
D
Dimensions, in. (mm) Tx E D
1/4 A
3/8 1/2 3/4
Pressure Rating
0.38 (9.7)
psig (bar)
0.41 (10.4)
9/16 3/4 3/4 7/8 1 1/16 1 5/16
0.48 (12.2)
6500 (447) 6600 (454)
0.60 (15.2) 6600 (454) 0.73 (18.5)
5300 (365) 4900 (337)
1.04 (26.4) 4600 (316)
14
Weld Fittings
Tube Socket Weld Fittings 90° Union Elbow L
Tube Socket Size
F flat
Dimensions
Ordering Number
D
E
F
L
Pressure Rating
Tx
Dimensions, in. (mm)
Tx E D
L D
90° Male Elbow L
SS-4-TSW-9
0.28 (7.1)
0.19 (4.8)
7/16
0.86 (21.8) 0.53 (13.5) 10 700 (737)
3/8
SS-6-TSW-9
0.31 (7.9)
0.28 (7.1)
1/2
1.04 (26.4) 0.64 (16.3)
8 100 (558)
1/2
SS-8-TSW-9
0.38 (9.7)
0.41 (10.4)
11/16
1.17 (29.7) 0.81 (20.6)
6 600 (454)
3/4
SS-12-TSW-9
0.44 (11.2) 0.63 (16.0)
1
1.56 (39.6) 1.12 (28.4)
5 900 (406)
1
SS-16-TSW-9
0.62 (15.7) 0.88 (22.4)
1 1/4
1.92 (48.8) 1.44 (36.6)
5 600 (385)
Tube Socket Size
F flat
Tx E
1/4 D
Male NPT Size 1/4 1/4
L1
3/8
3/8 1/2
90° Female Elbow F flat
L Tx E
1/2
1/2
Tube Socket Size
Female NPT Size
1/4 L1
D
1/4 1/4
Dimensions
Ordering Number
D
1/2 1/2
Tube Socket Size
F flat
Tx E
1/8 D
D
L
1/4 3/8
1/2
(7.1)
3/4 1
1/2
(4.8)
1/2
SS-6-TSW-2-6
0.31
0.28
(7.9)
(7.1)
11/16
SS-6-TSW-2-8
13/16
SS-8-TSW-2-8
0.38
0.41
(9.7)
(10.4)
D
E
13/16
(7.1)
SS-6-TSW-8-4
SS-8-TSW-8-8
SS-6-TSW-3 SS-8-TSW-3 SS-12-TSW-3 SS-16-TSW-3
11/16
(4.8)
0.31
0.28
(7.9)
(7.1)
0.38
0.41
(9.7)
(10.4)
SS-6-TSW-8-8
SS-4-TSW-3
Tx
Pressure Rating
0.79
1.05
0.48
psig (bar) 8000
(20.1)
(26.7)
(12.2)
(551)
1.04
1.05
0.64
8000
(26.4)
(26.7)
(16.3)
(551)
0.97
1.17
0.60
7800
(24.6)
(29.7)
(15.2)
(537)
1.02
1.45
0.60
7700
(25.9)
(36.8)
(15.2)
(530)
1.08
1.45
0.73
6600
(27.4)
(36.8)
(18.5)
(454)
L
L1
Tx
Pressure Rating
0.90
1.17
0.48
psig (bar) 7400
(22.9)
(29.7)
(12.2)
0.99
1.17
(25.1)
(29.7)
0.60
(509)
1.13
1.56
(15.2)
5700
(28.7)
(39.6)
1.19
1.56
0.73
5700
(30.2)
(39.6)
(18.5)
(392)
F
Dimensions, in. (mm) 0.19 0.28 SS-4-TSW-8-4
SS-2-TSW-3
L1
Dimensions
Ordering Number
Ordering Number
L
F
SS-6-TSW-2-4
A
1/2
E
Dimensions, in. (mm) 0.19 0.28 SS-4-TSW-2-4
3/8
Union Tee
psig (bar)
1/4
11/16 1 1
Dimensions A
D
E
Dimensions, in. (mm) 0.10 0.09 1.18 (30.0)
(2.5)
(2.3)
1.72
0.28
0.19
(43.7)
(7.1)
(4.8)
2.08
0.31
0.28
(52.8)
(7.9)
(7.1)
2.34
0.38
0.41
(59.4)
(9.7)
(10.4)
3.12
0.44
0.63
(79.2)
(11.2)
(16.0)
3.84
0.62
0.88
(97.5)
(15.7)
(22.4)
F 7/16 7/16 1/2 11/16 1 1 1/4
(509)
7400
(392)
L
Tx
Pressure Rating
0.59
0.29
psig (bar) 12 600
(15.0)
(7.4)
(868)
0.86
0.53
10 700
(21.8)
(13.5)
(737)
1.04
0.64
8 100
(26.4)
(16.3)
(558)
1.17
0.81
6 600
(29.7)
(20.6)
(454)
1.56
1.04
5 900
(39.6)
(26.4)
(406)
1.92
1.45
5 600
(48.8)
(36.8)
(385)
Weld Fittings
Tube Socket Weld Fittings Union Cross
Tube Socket Size
L
Dimensions
Ordering Number
A
Tx E
3/8 D
1/2 3/4
A
1
Tube Butt Weld to Tube Socket Weld
Tube OD
SS-4-TSW-4 SS-6-TSW-4 SS-8-TSW-4 SS-12-TSW-4 SS-16-TSW-4
Wall Thickness
(43.7)
(7.1)
(4.8)
2.08
0.31
0.28
(52.8)
(7.9)
(7.1)
2.34
0.38
0.41
(59.4)
(9.7)
(10.4)
3.12
0.44
0.63
(79.2)
(11.2)
(16.0)
3.84
0.62
0.88
(97.5)
(15.7)
(22.4)
Tube Socket Size
L
Tx
Pressure Rating
0.86
0.53
psig (bar) 10 700
(21.8)
(13.5)
(737)
1.04
0.64
8 100
(26.4)
(16.3)
(558)
1.17
0.81
6 600
(29.7)
(20.6)
(454)
1.56
1.20
5 900
(39.6)
(30.5)
(406)
1.92
1.45
5 600
(48.8)
(36.8)
(385)
F 7/16 1/2 11/16 1 1 1/4
Dimensions
Ordering Number
A
D
E
Tx
Pressure Rating
0.56
0.10
0.09
0.29
psig (bar) 12 600
Dimensions, in. (mm)
D
1/4 E
E
Dimensions, in. (mm) 0.28 0.19 1.72
F
1/4
D
Tx
3/8
0.08 (2.0)
0.07 (1.8)
A
1/2
3/4 1
0.09 (2.2)
0.11 (2.8)
0.13 (3.2)
1/8
SS-4-MTW-A-2TSW
1/4
SS-6-MTW-A-4TSW
1/4
SS-8-MTW-A-4TSW
3/8
SS-8-MTW-A-6TSW
1/2
SS-12-MTW-A-8TSW
1/2
SS-16-MTW-A-8TSW
(14.2)
(2.5)
(2.3)
(7.4)
(868)
0.75
0.28
0.19
0.48
8 200
(7.1)
(4.8)
(12.2)
(564)
0.28
0.19
0.50
(19.0)
0.88
(7.1)
(4.8)
(12.7)
7 500
(22.4)
0.31
0.33
0.60
(516)
(7.9)
(8.3)
(15.2)
1.12
0.38
0.41
0.75
(28.4)
(9.7)
(10.4)
(19.0)
6 300 (434)
1.38
0.38
0.41
0.73
5 300
(35.1)
(9.7)
(10.4)
(18.5)
(365)
Pipe Socket Weld Fittings Quality machining of all surfaces ensures consistent welding to pipe.
Ordering Information and Dimensions ■ Dimensions are for reference only and are subject to
change. ■ See Cleaning and Packaging, page 2, to order pipe
socket weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS‑06‑63.
Union D
D
P Pipe Size
Px P E
1/4 A
3/8 1/2 3/4 1
Ordering Number
Heavy wall, plus strength of material, ensures long life in severe service applications.
Dimensions E
Px
Pressure Rating
Dimensions, in. (mm) 0.39 1.06 SS-4-PSW-6
0.36
0.88
psig (bar) 8100
(26.9)
(9.9)
(9.1)
(22.4)
(558)
1.12
0.39
0.49
1.03
7100
(28.4)
(9.9)
(12.4)
(26.2)
(489)
1.12
0.39
0.62
1.25
6800
(28.4)
(9.9)
(15.7)
(31.8)
(468)
1.75
0.51
0.82
1.47
5800
(44.4)
(13.0)
(20.8)
(37.3)
(399)
1.75
0.51
1.05
1.86
6100
(44.4)
(13.0)
(26.7)
(47.2)
(420)
SS-6-PSW-6 SS-8-PSW-6 SS-12-PSW-6 SS-16-PSW-6
A
D
Socket depth equals or exceeds requirements of ASME B16.11 and ensures proper pipe .
15
Pipe Butt Weld Fittings Ordering Information and Dimensions
37 1/2° chamfer ensures proper weld (not included on 1/4 in. size).
■ Dimensions are for reference only and are subject to
change. ■ See Cleaning and Packaging, page 2, to order pipe
Male weld end can be butt or socket welded.
butt weld fittings cleaned in accordance with Swagelok Special Cleaning and Packaging (SC-11), MS‑06‑63.
Tube Socket Weld to Pipe Butt Weld
Tube OD
Pipe Size (Sch 80)
37 1/2°
D
E
Tx
Dimensions
Ordering Number
A
D
E
Tx
Dimensions, in. (mm) 1/4
A
3/8
1/2
3/4
1/4
SS-4-MPW-A-4TSW
0.88 (22.4)
1/2
SS-8-MPW-A-4TSW
1.12 (28.4)
3/8
SS-6-MPW-A-6TSW
1.03 (26.2)
1/2
SS-8-MPW-A-6TSW
1.12 (28.4)
3/4
SS-12-MPW-A-6TSW
1.50 (38.1)
1
SS-16-MPW-A-6TSW
1.38 (35.1)
3/8
SS-6-MPW-A-8TSW
1/2 3/4
Pressure Rating psig (bar)
0.28 (7.1)
0.19 (4.8)
0.48 (12.2)
10 300 (709) 7 800 (537) 8 100 (558)
0.31 (7.9)
0.28 (7.1)
0.60 (15.2)
1.00 (25.4)
0.38 (9.7)
0.42 (10.7)
SS-8-MPW-A-8TSW
1.19 (30.2)
0.38 (9.7)
0.41 (10.4)
SS-12-MPW-A-8TSW
1.50 (38.1)
0.38 (9.7)
0.41 (10.3)
1
SS-16-MPW-A-8TSW
1.56 (39.6) 0.44 (11.2)
0.38 (9.7)
3/4
SS-12-MPW-A-12TSW
1.50 (38.1) 0.44 (11.2) 0.62 (15.7) 1.05 (26.7)
7 800 (537) 6 600 (454) 6 000 (413) 6 600 (454)
0.73 (18.5)
6 600 (454) 6 600 (454) 6 000 (413) 5 900 (406)
Swagelok Orbital Welding System See the Swagelok Welding System M200 Power Supply catalog, MS‑02‑342, for more information.
Safe Product Selection When selecting a product, the total system design must be considered to ensure safe, trouble-free performance. Function, material compatibility, adequate ratings, proper installation, operation, and maintenance are the responsibilities of the system designer and .
Warranty Information Swagelok products are backed by The Swagelok Limited Lifetime Warranty. For a copy, visit swagelok.com or your authorized Swagelok representative.
Swagelok, Micro-Fit—TM Swagelok Company © 2009–2015 Swagelok Company Printed in U.S.A., AGS February 2015, R10 MS-01-149
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