... Cast Steel or Stainless Steel Pneumatic Regulating Valve For Water, Steam, Oil, Acid, Gas Size:DN20~500 1''-20''Inherent ... 91117.627.544691101762754406301000160021562816Equal percentage6.31016254063100160250400690900144019602560Nominal Pressure(Mpa)1.6,2.5,4.0,6.4,10Travel (mm)16254060100130Diaphragm effective ... level,Soft-sealing 6Flange sizeConform with JB/79.1(2)-94,HG20592-97,GB,ANSI,JIS,DIN etc. ...