Cast Steel Wedge Gate Valve

Cast steel wedge gate valve is a shut-off valve that uses cast steel (such as WCB material) as the valve body material and uses a wedge-shaped gate plate to achieve sealing. It controls the on-off of pipeline media by driving the gate plate to rise and fall vertically through the valve stem. It is mainly used in petrochemical, power systems and other scenarios, and is suitable for the opening and closing operations of high-temperature and high-pressure oil products, steam and other media.

‌Advantages of cast steel wedge gate valve‌
‌1. Low fluid resistance‌
The flow channel is completely unobstructed in the fully open state, and the flow resistance coefficient is close to that of a straight pipe, reducing the energy loss of medium transportation.
‌2. Excellent sealing performance‌
‌Adaptive sealing‌:
The elastic wedge gate allows slight elastic deformation through the annular groove design, compensating for the error caused by the angle deviation of the sealing surface or thermal expansion, and improving the sealing reliability;
The sealing surface is welded with stainless steel or hard alloy (such as cobalt-based alloy), which is resistant to high temperature (≤570℃), erosion, and suitable for high-pressure working conditions.
‌Flexible sealing form‌:
Supports metal hard seal (high temperature and high pressure) or soft seal combination (low leakage rate) to meet the needs of different media.
‌3. High temperature and high pressure resistance‌
Cast steel material (such as WCB) is annealed, with high pressure resistance, nominal pressure covering PN10~PN40 (Class 150~2500), and applicable temperature range -29℃~570℃. ‌

4. simple and reliable structure‌
The valve body and gate are integrally cast, which reduces complex transmission parts and has a low failure rate;
The clamped flange or open stem design reduces weight and is easy to install and maintain.
‌5. strong anti-blocking ability‌
The knife-type gate can cut off fibers and granular impurities, avoiding the jamming problem caused by medium accumulation in traditional gate valves.
6. convenient operation‌
The flexible graphite filler is used to reduce friction resistance, and the manual operation torque is reduced by 30%~50%;
Supports a variety of drive modes (manual, electric, pneumatic, etc.), and large-size valves are equipped with thrust bearings to further reduce the difficulty of operation.
‌7. low maintenance cost‌
The cast iron dark stem design does not require special maintenance tools, and regular cleaning of valve cavity deposits can extend the service life.
‌8. wide applicability‌
Adaptable to a variety of scenarios such as petrochemicals (high-temperature oil, natural gas), power systems (steam pipelines), industrial fluids (including granular media), etc.

 

cast steel wedge gate valve

 

Applications
Petrochemical industry: high-temperature oil and high-pressure cutoff of natural gas pipelines;
Power system: opening and closing control of steam pipelines in thermal power plants, such as Z40H valves;
Industrial fluids: flow management of slightly corrosive media (hard alloy sealing surfaces are required).

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