KVL type crankcase pressure regulator used in refrigeration room

It is mounted on the suction line, before the compressor. Protects the compressor motor against overcharging during startup, after long periods of stopping or after defrosting (high pressure in the evaporator). Capacities up to 72 kW, For R-22, R-134a, R 404A, R-507 and R-407C and other fluorinated refrigerants.