The Noritz SKJ724W Circulation Pump Set is a genuine OEM circulation pump assembly designed for Noritz NRCB series combination boilers. It circulates heated water through the system’s hot-water loop, helping maintain consistent water temperature and improve hot-water availability at connected fixtures. By supporting efficient water movement, the pump helps reduce waiting time for hot ... https://www.partshnc.com/noritz-skj724w-circulation-pump-set