MAIN VALVESTYPE SPM 1 AND SPM 3 Main valve type SPM is specially developed to regulatepressureand temperature in refrigeration freezing and air conditioning plants withfluorinated refrigerants and ammonia. SPM is a pilot operated main valve withscrewed-in pilot valves or pilot valves mounted in an external pilot line. Mainvalves type SPM are used in refrigeration plant with dry evaporation, pumpcirculation, and natural circulation. The regulator is available in twovariants, SPM 1 and SPM 3. SPM 1 is designed to accept one pilot valve eitherscrewed-in or mounted in an external pilot line. SPM 3 will accept threescrewed-in pilot valves or pilot valves mounted in an external pilot line. Thusseveral functions can be performed by the same valve.

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

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