Grundfos 595916 Pump 318973-401 and 3B pressure-tight or general-purpose

and 3B pressure-tight or general-purpose fittings

the P283-9930 is the current authorized replacement for both the HN61HB540 and HN61HB530 models

ideal for high-temperature boiler water level controls

providing consistent outlet pressure even under fluctuating inlet conditions

and cooling equipment across a 40°F to 90°F range

Grundfos 595916 Pump 318973-401 and 3B pressure-tight or general-purposeThe Grundfos 595916 (Model UP15 10SU7P TLC) is a heavy duty, stainless steel hot water recirculating pump designed specifically for retrofit applications in residential systems lacking a dedicated return line. This 115V single phase circulator utilizes the existing cold water line to loop thermal energy back to the water heater, ensuring instant hot water delivery at the furthest fixture. As a veteran grade recirculation system, it features a 1 25 HP