... pneumatic water flow control valve. 2.Good sealed performance, low Leakage. 3.Easy to implement remote control. Two Way Pneumatic Water Flow Control Valve Main ... -acting pneumatic actuatorsAvailable Accessories solenoid valve,air filter,lock up valve,switch,Valve position transmitter,Emergency action equipments ... /T 12237-2007,GB/T 4213-2008The valve structure lengthGB/T 12221-2005Flange StandardJB/T ...