Bolted Bonnet Gate Valve
Design: API 600, API 603, BS 1414, ISO 10434 | Face-to-Face ASME B16.10 | Flanged ASME B16.5 / ASME B16.47 | Butt-weld ASME B16.25 | Test API 598
Body Materials: WCB, LCB, WC6, WC9, CF8, CF8M, duplex, etc.
Trim options: 13Cr, Stellite, 304, 316, Monel (API 600 trim chart).
| NPS | L(RF) | H (open) | WT |
|---|---|---|---|
| 2″ | 178 | 409 | 20 |
| 4″ | 229 | 612 | 53 |
| 6″ | 267 | 710 | 136 |
| 8″ | 292 | 990 | 220 |
| 12″ | 356 | 1405 | 510 |
Pressure Seal Gate Valve
Design: API 600, ASME B16.34 | Pressure seal bonnet for high pressure.
Typical materials: Body WCB, WC6, WC9, C5, C12; Trim 13Cr, Stellite.
| Class | NPS | L(RF) mm | H mm | WT kg |
|---|---|---|---|---|
| 900 | 6″ | 610 | ~820 | 305 |
| 1500 | 8″ | 787 | ~1120 | 620 |
| 2500 | 6″ | 673 | ~880 | 560 |
Forged Steel Gate Valve
Design: API 602, BS 5352 | B.B OS&Y or W.B OS&Y.
Connections: SW, NPT, BW, Flanged (ASME B16.5).
| NPS | Class | L(RF) mm | H mm | WT kg |
|---|---|---|---|---|
| 1/2″ | 800 | 79 | 158 | 0.9 |
| 1″ | 800 | 108 | 193 | 2.3 |
| 2″ | 800 | 140 | 283 | 5.6 |
Slab Gate Valve
Design: API 6D, full bore or reduced bore, with or without through conduit.
Parallel seats, double expanding gate or slab gate. Ideal for pipeline service.
Features: Double block & bleed, emergency sealant injection, anti‑static, fire safe.
| Class | NPS | L(RF) mm | WT kg |
|---|---|---|---|
| 150 | 12″ | 610 | 550 |
| 300 | 24″ | 991 | 2800 |
Knife Gate Valve
Design: MSS SP-81, JB/T8691, wafer type, bi-directional seal.
Blade cut disc, self-cleaning, PTFE/metal seat. Suitable for pulp, slurry, sewage.
| NPS | L(mm) | H(mm) | WT(kg) |
|---|---|---|---|
| 4″ | 51 | 540 | 9.5 |
| 8″ | 51 | 885 | 37.5 |
| 12″ | 64 | 1100 | 90 |
Cryogenic Gate Valve
Extended bonnet, stainless steel / low carbon steel body, impact tested. For LNG, liquid nitrogen, etc.
Design: API 600 / 602, with cryogenic extensions.
Common References
▪ Design standards: API 600, API 602, API 603, BS 1414, DIN 3352, ASME B16.34
▪ Face‑to‑face: ASME B16.10, DIN 3202, JIS B2002
▪ Flange ends: ASME B16.5 (≤24″), ASME B16.47 (≥26″), JIS B2212, EN 1092-1
▪ Butt‑weld ends: ASME B16.25
▪ Socket weld / threaded: ASME B16.11 / ANSI B1.20.1
▪ Test: API 598, ISO 5208, BS EN 12266
▪ NACE MR0175 available.