The commonly used diaphragm valve materials such as rubber and PTFE

Poor flow characteristics of the diaphragm valve (approximate rapid opening), the control accuracy is low, the adjustable range is small, therefore, the foreign has been less used. With the depth of anti-corrosion materials research, the majority of foreign applications using valve, valve seat and valve cow made of corrosion-resistant materials to improve the dynamic performance of the control valve of the flow characteristics to meet the control requirements.
Diaphragm valve flow resistance is small, simple structure, the controlled media will not be disclosed, the flow capacity of approximately the same pass straight through control flange solenoid valve
1.5 times of the valve, the price ratio control valve of corrosion-resistant materials to be low, therefore, there is still some domestic market.stainless steel pneumatic cylinders