Custom Pipe and Coupling's Surge Control Valve is designed to eliminate damaging backsurge when the pump shuts off. As the pump operates, the valve wings fold up to the “open” position. When the pump shuts off, water pressure forces valve wings to fold down, eliminating backsurge from water remaining in the upper column pipe. This water then is allowed to bleed back through the surge valve. Custom Pipe and Coupling, Card No. 79