Size Range:2″ to 48″
Material:Stainless Steel (SS304, SS316)
Connection Options:Flanged
Working Pressure:Class 150 to Class 1500
Working Temperature:-29°C to 425°C
Sealing Options:Metal-to-Metal, Resilient Seat, Graphite, PTFE
Manufacturing Method:Cast, Forged, Machined
Applicable Medium:Water, Oil, Gas, Steam, Chemical Fluids
Manufacturing Standard:API 600, API 602, ASME B16.34
An API gate balve is a heavy-duty isolation valve designed in accordance with API standards for reliable on/off service in oil, gas, petrochemical, and power applications. Built for high pressure, high temperature, and demanding operating conditions, API gate valves provide full-bore flow, minimal pressure drop, and tight shut-off. Commonly manufactured to API 600, API 6D, or API 602, they are available in cast or forged steel, with flanged, butt-weld, or threaded ends. Thanks to their robust construction, long service life, and proven performance in critical pipelines, API gate valves remain a preferred choice for refineries, transmission lines, and process plants worldwide.
| Design and Manufacture | Face to Face / End to End | Flange Dimension | Butt Welding Dimension | Pressure–Temperature Rating | Inspection and Test |
|---|---|---|---|---|---|
| API 6D, API 600 | ANSI B16.10 | ANSI B16.5 | ANSI B16.25 | ANSI B16.34 | API 598, API 6D |
| Body / Cover / Disc | Stem | Sealing Face | Sealing Shim | Packing | Working Temperature (°C) | Suitable Medium |
|---|---|---|---|---|---|---|
| WCB | 2Cr13 | 13Cr / STL / With body material / PTFE / Nylon | Enhanced Flexible Graphite / 1Cr13 + Flexible Graphite / SFB-2 / 08 Soft Steel / F304 / F316 / F304L / F316L | Flexible Graphite / Enhanced Flexible Graphite / SFB/260 / SFP/260 / PTFE | ≤ 425 | Water / Steam / Oil |
| WC1 | 38CrMoAl/ 25Cr2MoV | ≤ 450 | ||||
| WC6 | ≤ 540 | |||||
| WC9 | ≤ 570 | |||||
| C5 / C12 | ≤ 540 | |||||
| CF8 | F304 | ≤ 600 | Nitric Acid / Acetic Acid / Urea | |||
| CF3 | F316 | |||||
| CF8M | F304L | |||||
| CF3M | F316L |
| Nominal Pressure (Lb) | Shell Test | Water Seal Test | Air Seal Test | |||
|---|---|---|---|---|---|---|
| MPa | Lbf/in² | MPa | Lbf/in² | MPa | Lbf/in² | |
| 150 | 3.1 | 450 | 2.2 | 315 | 0.5–0.7 | 60–100 |
| 300 | 7.8 | 1125 | 5.6 | 815 | 0.5–0.7 | 60–100 |
| 600 | 15.3 | 2225 | 11.2 | 1630 | 0.5–0.7 | 60–100 |
| 900 | 23.1 | 3350 | 16.8 | 2440 | 0.5–0.7 | 60–100 |
| 1500 | 38.4 | 5575 | 28.1 | 4080 | 0.5–0.7 | 60–100 |
| 2500 | 64.6 | 9367 | 47.4 | 6873 | 0.5–0.7 | 60–100 |
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