Reciprocating Pump

A positive displacement pump that uses reciprocating pistons. In a reciprocating pump, a volume of liquid is drawn into the cylinder through the suction valve on the intake stroke and is discharged under positive pressure through the outlet valves on the discharge stroke. Reciprocating pumps, which are normally designed to deliver high pressures, must include methods for releasing excessive fluid pressures. For protection, these pumps should include relief valves that cannot be isolated from the pump.