Which of the following statements is true about oil pots?

Oil pots play an essential role in refrigeration systems by acting as reservoirs that trap and store oil within the system. They are designed to allow oil to separate from the refrigerant, ensuring that it does not circulate through the entire refrigeration system. This separation is critical because oil is typically introduced into the refrigeration circuit to lubricate components such as the compressor.

In this context, the function of oil pots is to maintain adequate oil levels, promote proper lubrication, and prevent starvation of the compressor. By trapping the oil, they help to ensure that oil returns to the compressor when needed, thus maintaining the efficiency and reliability of the refrigeration system. The design of oil pots makes them effective in handling the differences in density between oil and refrigerant, which is a fundamental principle in their operation.

Therefore, the statement that oil pots are pressure vessels that trap oil accurately reflects their true purpose within a refrigeration system.