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semi-hermetic refrigeration compressor good quality,lower price ,shipment quickly Detailed Product Description Semi-hermetic Refrigeration compressors Chinese famous and independent brand, price preferential benefit, excellent qualitySemi-hermetic Refrigeration compressors 4-cylinder V-shaped series of semi-hermetic compressor: * 20-25 hp motor nominal power, 4-cylinder machine design, high efficiency, energy end, noise, oil pump lubrication. * Compact structure, stable operation, little vibration, low noise, lightweight aluminum pistons reduce friction and vibration. * Can use the R22, R502 refrigerant. * Built and electronic motor protection with style, cutting-edge electronic motor protection module to provide comprehensive protection. * Large oil capacity and Copeland oil circulation system designed to ensure the lubrication of bearings. . External oil pressure differential switch and crankcase heater . Copeland recognized frozen oil: Gunlun 3Gs, B5.2, Shell 22-12, Texaco WF32, Fuchs KM; * For a wide range of frozen, refrigerated applications designed Note: Here information for the product group overall information, only supplies to refer to Technical parameters Exhaust pipe(mm)28Suction tube(mm)54Net Weigh(kg)200Nominal power(HP)20Model / Part No.4VS-2000-TWMOil filling capacity(L)4.5Installation dimensions(mm)381x 305Dimensions (mm) length x width x height (without fan)711x417x 453Cooling capacity (W) evaporating temperature (-20 °C)28200Cooling capacity (W) evaporating temperature (-15 °C)35600Cooling capacity (W) evaporating temperature (-10 °C)44300Cooling capacity (W) evaporating temperature54400