Pneumatic Steam Control Valve(Water, Oil, Gas) Electric or Pneumatic Type PN:1.6-10Mpa DN:20-500mm Best price and quality. Pneumatic Diaphragm ... Steam Control Valve(150Lb, 300Lb, 600lb,900Lb,etc) Features:Top ... -guided Single Seated Control Valves, compact valve body, less component, esay to maintain. ...