... 3.Easy to implement remote control. Two Way Pneumatic Water Flow Control Valve Main Technical Parameters DN(mm) ... -acting pneumatic actuatorsAvailable Accessories solenoid valve,air filter,lock up valve,switch,Valve position transmitter,Emergency action equipments,hand ... /T 12237-2007,GB/T 4213-2008The valve structure lengthGB/T 12221-2005Flange StandardJB/T ...