Closed Gate Valve
Nominal Diameter: DN 400 ~ 2800 mm
Nominal Pressure: PN 0.05 ~ 0.25 MPa
Applicable Mediums: Coal gas and toxic, harmful gases
Applicable Temperature: ≤ 300°C
Closed Gate Valve
The Closed Gate Valve is a high-performance isolation valve designed to provide reliable shut-off in industrial piping systems. Featuring a gate mechanism that moves perpendicular to the flow direction, the valve ensures minimal pressure drop when fully open and tight sealing when fully closed. Its robust construction makes it suitable for high-pressure, high-temperature, and demanding operating environments.
Manufactured from premium-grade carbon steel, stainless steel, alloy steel, or special materials, the Closed Gate Valve offers excellent durability, corrosion resistance, and long service life. It is widely used in oil & gas, petrochemical, power generation, water treatment, and other critical industrial applications.
We provide comprehensive OEM and ODM services to meet specific customer and project requirements:
Our Closed Gate Valves can be manufactured and tested in accordance with international standards:
Parameter Specifications
| Parameter | Specification / Range |
|---|---|
| Valve Type | Closed Gate Valve |
| Design Standard | API 600, API 602, ASME B16.34 |
| Body Material | WCB, LCB, WC6, WC9, CF8, CF8M, Duplex SS |
| Gate Material | Stainless Steel, Alloy Steel, Hard-Faced Alloy |
| Seat Material | Stainless Steel, Stellite Overlay, Metal Seat |
| Size Range | DN15 – DN1200 (NPS 1/2" – 48") |
| Pressure Rating | Class 150 – Class 2500 |
| Connection Type | Flanged, Butt Weld, Socket Weld, Threaded |
| Bonnet Type | Bolted Bonnet, Pressure Seal Bonnet |
| Operating Temperature | -196°C to +650°C |
| Stem Type | Rising Stem / Non-Rising Stem |
| Operation Method | Handwheel, Gearbox, Electric, Pneumatic, Hydraulic |
| Leakage Standard | API 598 |
| Fire Safe Design | Optional |
| Testing Standard | API 598, ISO 5208 |
| Applicable Media | Water, Steam, Oil, Gas, Chemical Fluids |
Industry Applications
Closed Gate Valves are widely used in applications where complete shut-off, low flow resistance, and reliable sealing are required.
Material customization plan
Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.
Structural optimization design
For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.
Interface standard adaptation
Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.
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