1.Two way pneumatic water flow control valve. 2.Good sealed performance, low Leakage ... Easy to implement remote control. Two Way Pneumatic Water Flow Control Valve Main Technical Parameters DN(mm)1520253240506580100125150200250300350400450500600Ball core ... or Double-acting pneumatic actuatorsAvailable Accessories solenoid valve,air filter,lock up valve,switch,Valve position transmitter,Emergency action ...