Pneumatic diaphragm control valve has simple structure, small flow resistance, larger flow capacity than other control valves of the same caliber, no leakage, and Pneumatic diaphragm control valve can be used for the regulation of high viscosity and suspended particle fluid. Pneumatic diaphragm control valve is suitable for the regulation of strong alkali and corrosive media according to the different diaphragm materials (rubber NR,NBR,EPDM or Plastic PTFE,PFA,FEP ).Pneumatic diaphragm control valve is composed of diaphragm valve and pneumatic film actuator.
Pneumatic diaphragm control valve feature as below:
1 Pneumatic diaphragm control valve is with light actuator, the height and weight can be reduced by 30%.
2 The inner surface of the Pneumatic diaphragm control valve body is covered with a various materials to avoid direct contact with the medium and withstand the corrosion of the corrosive medium.
3 When the Pneumatic diaphragm control valve is closed, the leakage is zero, which is especially suitable for the highly toxic medium.
4 The flow path of Pneumatic diaphragm control valve is simple, the resistance is small, the rated flow coefficient ratio is bigger than single seat,cage guided control valve with the same caliber.