Kohler K-13516-CP Manual Toilet Flush Valve 1.6 gpf, Polished Chrome Kohler 1.6 Gpf Manual Toilet Flush Valve, Polished Chrome Reliable piston valve technology The product is manufactured in China Engineered for optimal performance with KOHLER(R) 1.6 gpf toilet Reliable piston valve technology Chloramine resistance on all rubber components exposed to waterway Durable cast brass construction Includes vacuum breaker and control stop