(1) according to the transmission way points: manual, electric, pneumatic, hydraulic and electromagnetic drive.
(2) according to the structure of the points: flashboard pneumatic valve, butterfly valve, leafy regulating pneumatic valve, pneumatic valve, bell tablet pneumatic valve, pneumatic ball valve, etc.
3. According to the working temperature points: high temperature air valve (
T above)
, medium temperature pneumatic valve (
~ ℃)
Pneumatic valve, normal temperature (
A ~ ℃ below)
。
(4) according to the shape points: circular pneumatic valve, rectangular pneumatic valve.