The CMA Dishmachines 13658.00 Chemical Inlet Check Valve helps regulate chemical flow and prevent unwanted backflow in compatible commercial dishwashing equipment. This 1/4-inch check valve is designed to allow detergent or rinse chemical solutions to move in the intended direction through the chemical supply line while preventing them from flowing backward. It operates through an int... https://partsfe.ca/cma-dishmachines-13658-00-dish-machine-chemical-inlet-check-valve-1-4/2-13658.00.html