150bl Swing Check Valve
Our 150lb swing check valve is engineered to prevent backflow in piping systems while minimizing pressure drop across the valve. Designed to ASME B16.34 and API 6D standards, this Class 150 pressure-rated valve features a disc that swings on a hinge pin, allowing unobstructed forward flow and automatic shut-off when flow reverses.
Overview
Application : 150lb swing check valves are widely deployed across industries where unidirectional flow control and backflow prevention are critical. Their low head loss and reliable automatic operation make them a preferred choice for gravity-fed and low-pressure systems.
Material Specification:
Body/bonnet | Cover | Disc | Seat | Hinge Pin | Bolt | Nut | Gasket |
Wcb | WCB | WCB | A105 | 410 | B7 | 2h | Flexible Graphite+304 |
Cf8 | CF8 | CF8 | F304 | F304 | B8 | 8 | Flexible Graphite+304 |
Cf8m | CF8M | CF8M | F613 | F316 | B8 | 8 | Flexible Graphite+304 |
B62 | B62 | B62 | B62 | B62 | B8 | 8 | Flexible Graphite+304 |
Technical Specification:
Design and manufacture : BS1868
Face to face : ASME B16.10
Flange ends : ASME B16.5
Test & Inspection : API 598
Performance Specification:
Nominal Pressure(lb) | Shell Test(mpa) | Sealing Test | Suitable Temp(℃) | Suitable Medium |
150 |
3.0 |
2.2 | CS : -29~425 SS : -59~540 Cu : -40~250 | Water Gas Oil |
Drawing:

Dimension:
NPS | 2” | 21/2” | 3” | 4” | 5” | 6” | 8” | 10” | 12” | 14” | 16” | 18” | 20” | 24” |
DN | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 |
L | 203 | 216 | 241 | 292 | 330 | 356 | 495 | 622 | 698 | 787 | 864 | 978 | 978 | 1295 |
H | 153 | 165 | 179 | 205 | 256 | 292 | 313 | 397 | 465 | 501 | 530 | 590 | 660 | 750 |
