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 ... ball Fixed ball Rated Cv 21387212517127338551394114552226359551367363--Rated stroke90adjustable range100 :1PNPN 1.6,4.0,6.4,11MPa; ANSI 150,300, ... 2008The valve structure lengthGB/T 12221-2005Flange StandardJB/T 79.1~79.4-1994,GB/T 9113-2000, ANSI,JIS, ...