A-36-A closet kit 4.5 GPF standard (white relief valve) For use on all diaphragm-type exposed or concealed Regal valves and pre-1997 Royal valves Contains A-19-A relief valve, A-15-A molded disc, A-156-A diaphragm and A-163-A plastic guide.OEM referenceNo 3301036 Fits Sloan valves