FAQ About Wedge Gate Valve
Wedge gate valve is a valve that controls the flow of fluid by lifting the gate between the valve seats. The gate is wedge-shaped and can provide better sealing performance. It is widely used in pipeline systems that need to be fully open or fully closed, and is particularly suitable for high-pressure and high-temperature conditions. It is highly favored for its low fluid resistance and reliable sealing.
Large opening torque: since the gate and the valve seat are wedge-shaped, a large friction force needs to be overcome when opening, so the opening torque is large and a large force is required to open.
Not Suitable for Throttling: wedge gate valves are designed mainly for full open or full close operation. Using them for throttling (partial opening) can cause excessive wear on the gate and seating surfaces, potentially leading to valve failure.
Large Space Requirements: Due to the vertical movement of the gate, these valves require significant installation space, especially when large in size.
Solid wedge gate valve
Structure: the gate is an integral wedge-shaped structure, solid and durable.
Applicable conditions: suitable for high pressure and high temperature working environment.
Disadvantages: may be stuck during thermal expansion and contraction.
Split wedge gate valve
Structure: Composed of two gate plates, capable of self-adjusting seal.
Applicable conditions: Suitable for working environments with fluctuating temperatures, reducing jamming problems caused by thermal expansion and contraction.
Pressure and temperature: Usually suitable for low pressure or medium temperature systems.
Summary
Solid wedge valves are more suitable for high pressure and high temperature applications, while split wedge valves are more suitable for environments with wide temperature variations. Selection should be judged on the basis of specific operating conditions.
