Back check valves provide flow protection to container openings or liquid lines where flow is intended for one direction. The valve is normally closed until pressure activates the valve when flow is directed into piping or containers causing the back check to open. When flow stops or reverses, the check returns to the closed position.

Heavy-duty soft seated check valves provide positive seal to prevent reverse product flow. Installation of a flow indicating swing check upstream of the pump allows the operator to observe product flow and make pump adjustments for maximum flow without cavitation.