... performance, low Leakage. 3.Easy to implement remote control. Two Way Pneumatic Water Flow Control Valve Main Technical Parameters DN(mm)1520253240506580100125150200250300350400450500600Ball core typeFloat ... Cv 21387212517127338551394114552226359551367363--Rated stroke90adjustable range100 :1PNPN 1.6,4.0,6.4,11MPa; ANSI 150,300,600LB; JIS 10,16,20,30,40Kflow ...