Cla-Val Pacific 61-02 and 661-02 Deep Well Pump Control Valves are designed to protect pipelines from surges caused by the starting and stopping of deep well pumps. They are hydraulically operated diaphragm valves, controlled by a solenoid pilot valve. Separate adjustable flow control valves in the pilot system regulate the opening and closing rates. A limit switch on the valve stem serves as an electrical interlock between the valve and the pump motor.
