Today, there are more and more products and models of valves. Among many valve products, the use frequency of pneumatic butterfly valve and gate valve is the most prominent. Many users do not know what the difference between gate valve and butterfly valve is, but do not know how to select these two valves. Therefore, it is very important to understand the difference between butterfly valve and gate valve.

4. Classification according to working pressure
(1) Vacuum butterfly valve. Butterfly valve with working pressure lower than standard atmospheric pressure.
(2) Low pressure butterfly valve. Butterfly valve with nominal pressure PN ≤ 1.6MPa.
(3) Medium pressure butterfly valve. Butterfly valve with nominal pressure PN 2.5 〜 6.4 MPa.
(4) High pressure butterfly valve. Butterfly valve with nominal pressure PN 10.0~80.OMPa.
(5) Ultra high pressure butterfly valve. Butterfly valve with nominal pressure PN<100MPa.