Wedged Gate Valve Description
Wedge gate valve is a kind of truncated valve with wedge gate as the core sealing part, sealing is achieved by the wedge force between the gate and the valve seat, and it is suitable for high-pressure, high-temperature or particle-containing medium piping system in petroleum, chemical, electric power and other industries. Its core design follows GB/T12234 (steel gate valve standard for oil and gas industry) and API 600 (carbon steel/alloy steel gate valve standard).
Specification
Nominal diameter (DN): DN50～DN1200 (common range), full bore design.
Pressure rating:
American Standard: Class150～Class2500 (up to 42MPa).
European standard: PN10～PN420.
Connection: flange connection (ANSI, DIN standard) or welding, suitable for high pressure piping system.
GNEE Wedged Gate Valve
Benefits and Features
- High sealing:
The wedge gate presses against the valve seat by elastic deformation or medium pressure when closing, achieving zero leakage (especially suitable for high-pressure systems).
- Low flow resistance:
Straight-through flow path design, flow resistance coefficient close to straight pipe, reduce pumping energy consumption.
- Lightweight operation:
The open stem structure has a large opening and closing height but is easy to maintain, while the concealed stem structure has low torque and saves space.
- Strong adaptability:
Temperature range: -29 ℃ ~ 550 ℃ (low-temperature carbon steel material can be extended to -196 ℃).
Media compatibility: water, steam, oil, slurry containing particles and so on.
Application
- Oil and gas:
Long-distance pipeline cut-off, sulphur-containing oil and gas control, oil well gas extraction system.
- Chemical industry and electric power:
High-temperature steam pipeline, corrosive media transport, coal dust and ash treatment.
- Municipal & Environmental:
Water supply and drainage systems, sewage treatment containing solid particles.
Why choose Wedge Gate Valves
- Sealing reliability:
Wedge gate relies on media pressure to seal itself under high pressure, and the elastic gate plate compensates for thermal deformation to avoid leakage.
- Economy:
Simple structure, low maintenance costs (such as elastic gate can be repaired online).
- Standardised design:
Comply with API, GB and other standards to ensure the suitability and safety of working conditions.
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