Pneumatic wedge single ram electric gate valve compared with elastic disc electric brake of the pneumatic valve

（ ） Wedge a single ram electric brake pneumatic valve. Simple structure more flexible disc pneumatic valve
b. Under high temperature, the sealing performance is better than elastic pneumatic gate valve or double ram pneumatic valve.
c. Suitable for easy coking of high temperature medium.
（ ） Flexible disc electric brake pneumatic valve
a. It is special form of wedge type single ram pneumatic valve. Compared with pneumatic valve wedge electric gate, at high temperature, good seal performance, ram heated not easily stuck;
b. Applicable to steam, high temperature oil and oil and gas medium, and is suitable for frequent switch parts.
c. Does not apply to easy coking medium.