The Pressure Regulator is compatible with Everbilt Convertible Jet pump models: DP250, DP370C, DP550C, AUTODP250 Includes: pressure regulator, plastic tubing, brass fittings Refer to your owner's manual for instructions on installing and setting the Pressure Regulator Valve The Pressure Regulator Valve, sometimes referred to as a pressure control or pressure reducing valve, is required for deep well jet pump installations. The Valve decreases the water pressure coming into the home to a safe level before the water reaches any plumbing fixtures. The Pressure Regulator Valve is compatible with Everbilt Convertible Jet pump models: DP250, DP370C, DP550C, AUTODP250