Vacuum gate valve
PN1.0~10.0
orifice： DN50~800 pressure： PN1.0~10.0 material： Carbon steel, stainless steel, gray cast iron temperature： ≤425°C standard： GB medium： Water vapor gas oil product
The vacuum gate valve is an improvement from the ordinary manual gate valve, with the difference being that an additional vacuum sealing ring is added to the packing seal of the vacuum gate valve, which has a self expanding and pressing effect. Better gas sealing performance than ordinary gate valves. When the vacuum gate valve is closed, the sealing surface can be sealed solely by the medium pressure, that is, the sealing surface of the gate is pressed against the valve seat on the other side by the medium pressure to ensure the sealing surface is sealed, which is called self sealing. Most gate valves use forced sealing, which means that when the valve is closed, external force must be used to forcefully press the gate plate against the valve seat to ensure the sealing performance of the sealing surface.