... .0Z, NJ-BF5.0Z:Copeland semi-hermetic piston compressor, oil separators, air-cooled condenser, axial flow fan, liquid reservoir, ... NJ-BF20Z, NJ-BF25Z:Copeland semi-hermetic piston compressor, oil separators, air-cooled condenser, axial flow fan, liquid reservoir, ... filter drier, high pressure gauge, low pressure gauge, oil pressure gauge, pressure controls, motor overheat protector, cylinder end ...