MAIN VALVES TYPE SPM 1 AND SPM 3Main valve type SPM is specially developed to regulate pressure and temperature in refrigeration freezing and air conditioning plants with fluorinated refrigerants and ammonia. SPM is a pilot operated main valve with screwed-in pilot valves or pilot valves mounted in an external pilot line. Main valves type SPM are used in refrigeration plant with dry evaporation, pump circulation, natural circulation. The regulator is available in two variants, SPM 1and SPM 3. SPM 1 is designed to accept one pilot valve either screwed-in or mounted in an external pilot line. SPM 3 will accept three screwed-in pilot valves or pilot valves mounted in an external pilot line. Thus several functions can be performed by the same valve.

PILOT VALVES for SPM VALVE SPM Valves can be configured for various applications based on a combination of Pilot Valves  Pressure controlled pilot valve type MPR-LP  Pressure controlled pilot valve type MPR-HP  Pressure controlled pilot valve type MPR with pilot signal connector  Differential pressure controlled pilot valve type MPR-DPL  Differential pressure controlled pilot valve type MPR-DPH Solenoid pilot valve type MPSV-NC and MPSV-NO