KOHLER GENUINE PART GP500520 CARTRIDGE  FOR PRESSURE BALANCING UNIT (SHOWER),LASCO,KO-500520" /> Protect the warranty on KOHLER products, always look for the KOHLER GENUINE PARTS logo Used in most pressure balancing valves 1/2" with single handle Cartridge has a diaphragm to ensure consistent pressure in your shower Meets all required codes and standards