The Polaris 91009002 pressure relief valve is compatible with 180, 280, 380 and 3900 gauges. Replacement part for Polaris pressure relief valve.

Pressure reducers, booster pumps, pressure switches, meter regulators and pressure gauges are all required for the proper operation and control of water pressure in individual dwellings and buildings. To avoid too low or too high water pressure, follow the advice in this guide!