Liquid Injection
In order to prevent overheating operation of compressor, refrigerant is injected to compressor suction port from liquid line reducing pressure through capillary tube. The operation is as follows;
Plunger which is a slide part inside valve body lifts to make a flow of refrigerant when the coil is energized, while when not energized, the plunger lowers to contact with valve seat due to spring force, and shuts the flow of refrigerant.