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We manufacture more than a thousand specifications of over ten series of products, including safety valves, power station valves, steam extraction check valves, gate valves, globe valves, check valves, hard-sealed ball valves, all-welded ball valves, ball valves, butterfly valves, and other models and specifications.
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Swing check valve
Swing check valve
Swing check valve
A check valve is a valve that automatically prevents the backflow of fluid. The valve disc opens under fluid pressure, allowing fluid to flow from the inlet side to the outlet side. When the inlet pressure is lower than the outlet pressure, the valve disc closes automatically under the action of fluid pressure difference, its own weight, and other factors to prevent fluid backflow. It features good process performance and a wide applicable pressure and temperature range. It is easy to install and operate in engineering applications. It is mainly divided into lift check valves, swing check valves, and vertical check valves.
Lift check valve
Suction check valve
Suction check valve
Flanged/Welded Hydraulic Check Valve
Flanged/Welded Hydraulic Check Valve
Hydraulic check valves are mainly used in the steam turbine extraction system of thermal power plants to protect the steam turbine. When the steam turbine suddenly loses its load, the valve should close quickly to prevent steam backflow and turbine overspeed accidents. The valve has a pressure-assisted closing system, which is characterized by fast and reliable closing without affecting the normal opening of the valve.
Air release check valve
The air-release check valve is installed on the high-pressure feed water pump outlet pipe of the thermal power unit to prevent backflow of feed water and protect the feed water system. This valve works with the minimum flow automatic recirculation bypass valve of the water pump. When the feed water pump is under low load or the outlet stop valve is closed, the automatic recirculation bypass valve should be in the open position to ensure the safe operation of the water pump. When the air-release check valve is opened, the recirculation bypass valve automatically closes. It is not suitable for media containing solid particles and high viscosity.