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www.dklok.com
Instrumentation Pipe
& Weld Fittings
www.dklok.com 16All dimensions are in millimeters unless otherwise specified and only for reference subject to change.
Weld Fittings
DK-Lok weld fittings are designed to provide permanent weld connections in pressure impulse, system vibration, and temperature
cycling. Tube socket end design meets and exceeds the requirments of ASME B16.11 for ease of tube socket welding.
Features
Technical information
•
DK-Lok weld tube socket ports have a tapered sizing angle
at the end that holds tubing properly and provides approx.
1.5mm(0.08”) welding gap as specified in ASME B16.11.
This feature allows consistent welding assembly as well as
pre-assembly of many tubing runs before welding.
•
Fittings are available in stainless steel only. Thus the part
number of table below contains the material designator-S.
Use like tubing and fitting material. This ensure the same coefficient of expansion & reduction in the thermal cycle and the same
corrosion resistance.
Standard fitting material is Stainless steel ASTM A276 type 316 of bar stock and ASTM A182 F316 of forging.
Pressure ratings shown in the dimensional tables are calculated in accordance with the requirements of ASME B31.3
apered sizing angle provides
approx. 1.5mm gap
Tapered sizing angle provides
approx. 1.5mm gap
Tapered sizing angle provides
approx. 1.5mm gap
Part
Number
T
TubeO.D
d
mm
D
mm
E
mm
L
mm
Working
psig
Pressure
bar
GUSW- 4T-S
1/4 4.6 13.0 7.1 19.0 10,000 689
GUSW- 6T-S
3/8 7.1 15.8 7.9 22.4 7,600 523
GUSW- 8T-S
1/2 10.2 19.0 9.7 26.9 6,200 427
GUSW-10T-S
5/8 12.7 24.0 10.4 30.2 6,400 440
GUSW-12T-S
3/4 15.7 26.9 11.2 33.3 5,500 378
GUSW-16T-S
1 22.1 35.0 15.7 36.6 5,200 358
Part
Number
T
TubeO.D
d
mm
D
mm
E
mm
H
WrenchFlat
mm
L
mm
Working
psig
Pressure
bar
GLSW- 4T-S
1/4 4.6 13.4 7.1 12.7 21.8 11,300 778
GLSW- 6T-S
3/8 7.1 15.8 7.9 12.7 24.5 8,400 578
GLSW- 8T-S
1/2 10.2 20.6 9.7 17.4 29.0 7,800 537
GLSW-10T-S
5/8 12.7 23.8 10.4 20.6 34.5 6,700 461
GLSW-12T-S
3/4 15.7 28.6 11.2 25.4 37.0 6,700 461
GLSW-16T-S
1 22.1 35.0 15.7 31.8 46.5 5,800 400
Tapered sizing angle provides
approx. 1.5mm gap
Tapered sizing angle provides
approx. 1.5mm gap
Part
Number
T
TubeO.D
d
mm
D
mm
E
mm
H
WrenchFlat
mm
L
mm
Working
psig
Pressure
bar
GTSW- 2T-S
1/8
2.3 13.4 2.5 12.7 15.0 11,800 813
GTSW- 4T-S
1/4 4.6 13.4 7.1 12.7 21.8 11,300 778
GTSW- 6T-S
3/8 7.1 15.8 7.9 12.7 24.0 8,400 578
GTSW- 8T-S
1/2 10.2 20.6 9.7 17.4 29.0 7,800 537
GTSW-10T-S
5/8 12.7 23.8 10.4 20.6 34.5 6,700 461
GTSW-12T-S
3/4 15.7 28.6 11.2 25.4 37.0 6,700 461
GTSW-16T-S
1 22.1 35.0 15.7 31.8 46.5 5,800 400
Part
Number
T
TubeO.D
P
NPT
in.
d
mm
D
mm
E
mm
H
Hex
mm
L
mm
Working
psig
Pressure
bar
GCMSW4T- 4N-S
1/4 1/4 4.6 12.2 7.1 14.2 29.2 7,500 516
GCMSW6T- 4N-S
3/8 1/4 7.1 15.3 7.9 15.8 31.8 7,500 516
GCMSW6T- 6N-S
3/8 3/8 7.1 15.3 7.9 17.4 31.8 7,300 502
GCMSW6T- 8N-S
3/8 1/2 7.1 15.3 7.9 22.2 37.8 7,200 496
GCMSW8T- 4N-S
1/2 1/4 7.1 18.5 9.7 19.05 33.3 6,200 427
GCMSW8T- 6N-S
1/2 3/8 9.4 18.5 9.7 19.05 33.3 6,200 427
GCMSW8T- 8N-S
1/2 1/2 10.2 18.5 9.7 22.2 38.9 6,200 427
Tube socket weld fitting
UNION
GUSW
Tube to Tube
UNION TEE
GTSW
Tubes
UNION ELBOW
GLSW
Tube to Tube
MALE CONNECTOR
GCMSW