The PP-DC park control double check valve is a push-pull, manually operable on/off valve with an integral double check. It is dashboard mounted and provides in-cab control of truck or bus parking brakes. Manually pushing or pulling the button will release or apply the parking brakes. The integral double-check valve allows the PP-DC valve to receive supply air pressure from either, or both, the front or rear axle service reservoirs.

Cross references mean that this itme should be a suitable replacement for the part numbers listed. You should check the description to be sure it will work in your application.