Which two types of valves are commonly used on reciprocating compressors?

Reciprocating compressors rely on valves that perform effectively under varying pressure conditions and facilitate the proper flow of refrigerant. The two types of valves commonly used in these compressors are ring valves and reed valves.

Reed valves are made of flexible materials that create a one-way flow of refrigerant. When the compressor draws in gas, the reeds open, allowing the gas to enter the cylinder. As the piston compresses the gas, the reeds then close tightly to prevent backflow, ensuring efficient compression and minimizing energy loss.

On the other hand, ring valves, though less common, also serve a similar purpose by controlling the flow of refrigerant in and out of the compressor cylinders. They use a circular arrangement that opens with positive pressure and closes with negative pressure, ensuring that the gas moves in the correct direction according to the compressor's cycle.

These valve types are specifically designed to handle the dynamic pressure variations of reciprocating compressors, making them essential for their operational efficiency. The design and functionality of both types of valves contribute to the compressors' reliability and performance in refrigeration systems.