Heinz Double Dispenser Upper Check Valve. This upper check valve attaches to the Double Dispenser pump housing and provides a one way flow of product through the pump housing. The nozzle slides over the Upper check valve.

Heinz Double Dispenser Upper Check Valve. This upper check valve attaches to the Double Dispenser pump housing and provides a one way flow of product through the pump housing. The nozzle slides over the Upper check valve.