Grundfos 91584912 Flange Set 319848-301 Optimized U-tube design ensures consistent

Optimized U-tube design ensures consistent oil return to the crankcase

7 microamps minimum for stable burner operation

burner ignition failure

while the robust internal contacts ensure consistent HVAC pressure switch troubleshooting results and long-term reliability under varying thermal loads

Grundfos 91584912 Flange Set 319848-301 Optimized U-tube design ensures consistentFor high capacity commercial hydronic systems, the Grundfos 91584912 provides a rugged, 3 inch NPT threaded connection designed for a precise fit with UPS 53 series circulator pumps. This GF53 cast iron flange set is a direct replacement solution for contractors maintaining hot water recirculation systems or large scale radiant heating loops. Constructed from heavy duty cast iron, these 3 inch pump flanges are engineered to withstand the thermal