Discharge Valve

The discharge valve is mainly used at the bottom of reaction vessels, storage tanks, and other containers for discharge, sampling, and dead zone shut-off operations. There are two types of discharge valves: upward expansion and downward expansion. When the handwheel rotates clockwise, the valve closes and the valve stem moves upward. This valve is of the upward expansion type. When the handwheel rotates clockwise, the valve closes and the valve stem rotates downward. This valve is of the downward expansion type. The upward sliding discharge valve opens the valve by moving the valve disc upwards. When opening, the valve needs to overcome the gravitational force of the medium, and the opening torque is greater than the closing torque. The downward sliding discharge valve opens by moving the valve disc (plunger) downwards, and the opening direction is the same as the medium force, so the opening torque is smaller than the closing torque. The main feature of the discharge valve produced by Shanghai Meiyanyi Pump Valve is that it is welded to the bottom of storage tanks and other containers with the help of a flange at the bottom of the valve, eliminating the residual phenomenon of process media at the outlet of the container. The valve body is usually V-shaped and provides two working modes of valve disc: lifting and lowering.