Uz41sm plunger valve | structure of plunger gate valve

Plunger gate valve is composed of valve body, bonnet, valve rod, plunger, guide sleeve, sealing ring, handwheel and other parts (as shown in the figure). When the hand wheel rotates, the valve rod drives the plunger to move up and down in the guide sleeve, so that the inclined conical surface at the end of the plunger and the valve seat surface complete the opening and closing function of the valve.

In the valve, the plunger and the sealing ring adopt interference fit. By adjusting the pre tightening force of the middle flange bolts, the lateral force generated by the compression of the sealing ring is sealed with the middle hole surface of the valve body and the outer circle of the plunger, which is a new non-toxic sealing material with high wear resistance. Therefore, the sealing is reliable and durable, thereby improving the service life of the valve.

The plunger gate valve is designed and manufactured according to the connection size of the original gate valve. Due to the shortcomings of the gate valve, such as external leakage, poor reproducibility of the sealing ring and short service life, this plunger gate valve combines the advantages of non leakage of the plunger valve with the characteristics of fast opening and closing and high temperature and high pressure resistance of the gate valve, and becomes a leakage free plunger gate valve with novel structure.