The Apollo Conbraco 36E10301PR is a pressure reducing valve designed to reduce the water pressure coming from the city main to a more functional line pressure in the home, resulting in water consumption savings. It features a thermal expansion bypass that dissipates expanded downstream pressure back to the service main and is factory set at 50 PSI. The pressure setting can be adjusted by loosening the lock nut and turning the adjustment screw clockwise to raise the pressure or counterclockwise to lower it.