Single Stage Refrigeration Compressor include two cylinders single stage and have the capacity ranging from 27 TR for ammonia as refrigerant at evaporating -5 ° C and +40 ° C temperature. The Compressor has a speed of 1450 rpm. The Compressor has steel fabricated crankcase, modular construction and has efficient heat dissipation. The Compressor is designed with various accessories such as drive set, flywheel, motor pulley, belts, base frame, stop valves, capacity control solenoid valves, oil separator, pressure gauges and safety cut-outs panel box and crankcase heater. The Compressor is designed to operate with ammonia, halo-carbons and other refrigerants and is suitable for continuous duty, process refrigeration small ice plants and cold storages. The Single Stage Refrigeration Compressor has protection against liquid hammer, provision for cylinder jacket cooling and force feed lubrication system.