... . 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 ... 1/4",G1/4",G3/8",G1/2"Design Manafacfure standard GB/T 12237-2007,GB/T 4213-2008The valve structure ...