... water control system3.Announcements:1)NBR/EPDM/VITON can be used for Sealing material to fit different liquid On / Off control ... , gas, water, oil etc.Solenoid Valve is an automatic control part used in liquid line, suction line and steam line of refrigeration ... the refrigerant to pass or not, the valve is widely used in refrigeration compressor group, central air-conditioning, cold storage equipment ...