Reciprocating compressor make use of a piston sliding within a cylinder to compress refrigerant vapor. Figure four-29 exhibits the basic principle of operation of a reciprocating compressor. In determine four-29A,the piston has moved downward while in the cylinder, A. It's moved refrigerant vapor with the suction line via ingestion valve. https://newsweigh.com/comprehensive-guide-to-restaurant-refrigeration-repair-expert-tips-solutions/