Sourced directly from the manufacturer, this part is an exact replacement for various air compressors. Its primary purpose is to control the airflow through the pump. This part is an assembly that includes the plate gasket and seals. When this part is malfunctioning, the tank will take longer to fill or will not be able to fill at all. It will need to be replaced once it becomes damaged or worn. You will need a wrench set and a socket set to complete this repair. Customers rated this repair as Easy.