The Whirlpool WP22002437 is a water input valve designed exclusively for Whirlpool washers. It is a crucial part that regulates the water flow into the washer during various washing cycles. The washer's control board sends electrical impulses to the valve, enabling it to operate. According to the intended cycle, these signals cause solenoids inside the valve to open and close, corresponding to particular water inlets. For instance, during a certain cycle, the valve may open one inlet for hot water and another for cold water. It prevents water waste, ensures that the proper amount of water is used for each cycle, and generally makes the washing machine operate more smoothly.