... Steam Control Valve(Water, Oil, Gas) Electric or Pneumatic Type PN:1.6-10Mpa DN:20-500mm Best price and quality. Pneumatic ... increases 30%. Wide adjustable scope, inherent adjustable ratio is 50:1. The valve actuator use multiple springs structure, and the ... have not chose the model, Please provide us the specifications.1. Size, Rated Flow Factor Kv2. Fluid Properties ( Pressure, Temperature, ...