What is the use of Passat exhaust check valve? Will lead to failure.

Let the oil and gas in the body be discharged from the body, and the outside air and water can't enter. Check valves and pressure limiting valves are safety devices to prevent equipment damage caused by safety accidents and abnormal processes.

The possible fault is that the separation of compressor outlet and condenser inlet improves the heat transfer effect of cold self-condenser and evaporator. Oil separator is more important for systems with poor mutual solubility between lubricating oil and working fluid.

Extended data:

Check valves are used in hydraulic systems to prevent oil flow from flowing backwards, or in pneumatic systems to prevent compressed air from flowing backwards. There are two kinds of check valves: straight-through type and right-angle type. Straight-through check valves are installed on threaded pipes.

Right-angle check valves have three forms: threaded connection, plate connection and flange connection. Hydraulic control one-way valve, also known as locking valve or pressure maintaining valve, is the same as one-way valve to prevent oil from flowing back.