... 1. Semi-hermetic piston compressorCopeland semi-hermetic piston compressor;Copeland has rich experience in manufacturing and service;The same manufacturing ... , NJ-BF3.0Z, NJ-BF4.0Z, NJ-BF5.0Z:Copeland semi-hermetic piston compressor, oil separators, air-cooled condenser, ... (IP55).Accessories of NJ-BF10Z, NJ-BF20Z, NJ-BF25Z:Copeland semi-hermetic piston compressor, oil separators, air-cooled condenser, ...