Ross - Model 45-WR - Deep Well Pump Valve - Brochure

The deep well pump control valve shall be located off a tee connection from the main line in order to blow off air or sand particles agitated by the pump starting. Because the valve is fully open when the pump starts and then slowly closes, it effectively discharges unwanted media from the system before water flows through the main line. In addition, the valve insures a smooth stopping and starting flow in the system by closing slowly after the pump starts and being 95% open before the pump stops.