Introduce several kinds of disc brake pneumatic valve

（ ） Pneumatic valve wedge single ram gate

(1) structure is relatively simple elastic brake pneumatic valve;

(2) under high temperature, the sealing performance is better than elastic pneumatic valve gate or double ram pneumatic valve;

3. Suitable for medium of high temperature anti-coking.
　　
（ ） Flexible disc brake pneumatic valve

it is a special form of wedge type single ram. Compared with pneumatic wedge gate valve, at high temperature, good seal performance, when heated and ram is not easy to get stuck; Applicable to steam and oil, oil and gas in high temperature medium, and is suitable for frequent switch parts. Should not be used for easy coked medium.
　　
（ ） Double disc brake pneumatic valve

(1) the sealing performance is good pneumatic wedge gate valve, such as sealing surface Angle and cooperate to be not very accurate pneumatic valve seat, still has good sealing;

(2) the gate after sealing surface wear, the spherical centers at the bottom of the metal pad can be used for thicker, generally don't have to be surfacing welding and grinding seal face, single disc and flexible disc hard.

3 parts more than other forms of brake pneumatic valve;

(4) in addition to the applicable to steam, oil and other media, also applies to the switch area of frequent and the sealing surface wear large medium, should not be used for easy coked medium.
　　
（ ） Parallel brake pneumatic valve

1) than other forms of brake pneumatic valve sealing poor;

2) is suitable for the medium temperature and low pressure;

(3) in addition to the two pieces of equipped with fixed plate ram disc are not easy to fall off, with a lead wire every two pieces of ram of ram is easy to fall off, use less reliable.

(4) damper and pneumatic valve seat sealing surface processing and maintenance easier than other forms of brake pneumatic valve.