1.Two way 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 Technical Parameters DN(mm)1520253240506580100125150200250300350400450500600Ball core typeFloat ... 150,300,600LB; JIS 10,16,20,30,40Kflow characteristicAs chart 1Temperature range-40~+550°CRole of formair-to-open,air ...