What is the equalizing line of a compressor?

The equalizing line of a compressor is a small-diameter tube that connects the suction and discharge sides of the compressor, allowing for the equalization of pressure between these two sides. This line helps to ensure proper operation by balancing the pressure, particularly during startup and shutdown, and preventing potential issues such as mechanical strain or oil migration. It can also assist in maintaining efficient compressor performance and stability in the refrigeration or air conditioning system.