Class 300 WCB Gate Valve
Class 300 WCB Gate Valve is engineered for medium to high pressure working conditions, with reinforced carbon steel WCB body and bonnet to deliver greater pressure bearing capacity. Built in accordance with ASME B16.5 and API 600 standards, it provides stable sealing, strong structure and long-term durability for high-pressure fluid on-off control in demanding industrial environments.
Overview
Application:
Suitable for high-pressure steam, oil, gas and water services.
Widely used in power plants, refineries, petrochemical plants, oil and gas transmission systems and high-pressure industrial pipelines.
Material Specification:
Body/bonnet | Stem | Disc | Seat | Bolt | Nut | Packing | Gasket |
Wcb | 13cr | Wcb | A105 | B7 | 2h | Flexible Graphite | Flexible Graphite+304 |
Cf8 | F304 | Cf8 | F304 | B8 | 8 | Flexible Graphite | Flexible Graphite+304 |
Cf8m | F316 | Cf8m | F613 | B8 | 8 | Flexible Graphite | Flexible Graphite+304 |
B62 | B62 | B62 | B62 | B8 | 8 | Flexible Graphite | Flexible Graphite+304 |
Tenhnical Specification:
Design and manufacture : API 600
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 |
300 | 7.5 | 5.5 | CS : -29~425 SS : -59~540 Cu : -40~250 | Water Gas Oil |
Drawings:

Demensions:
NPS | 2” | 21/2” | 3” | 4” | 5” | 6” | 8” | 10” | 12” | 14” | 16” |
DN | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 |
L | 216 | 241 | 283 | 305 | 381 | 403 | 419 | 457 | 502 | 762 | 838 |
H | 417 | 460 | 526 | 650 | 694 | 824 | 987 | 1192 | 1431 | 1559 | 1758 |
W | 200 | 250 | 250 | 250 | 300 | 350 | 450 | 500 | 560 | 760* | 760* |
