The pneumatic program-controlled stop valve can be widely used in the automatic control and remote control system of flammable, explosive and toxic gas medium in the production process of gas separation industry, petrochemical, metallurgical, electric power, light textile and other industries. The working conditions are relatively bad, so the requirements for the materials of parts are also high. Cemented carbide is a famous wear-resistant, durable and corrosion-resistant material.
What role does cemented carbide valve core play here? When the signal of the actuator makes the compressed air enter the cylinder from the channel at the bottom of the cylinder through the connecting plate, it will push the piston upward and drive the cemented carbide valve core of the valve stem to move vertically upward, so that the cemented carbide valve core is separated from the sealing surface of the valve seat, and the valve is fully opened; When the signal of the actuator is reversed and the compressed air enters the cylinder from the cylinder head channel through the connecting plate, the piston is pushed downward, and the cemented carbide valve core of the valve stem is driven to move vertically downward, so that the cemented carbide valve core and the sealing surface of the valve seat are closed, and the valve is completely closed.