Grundfos Pump Flanges & Unions
All flange kits include (2) flanges, (4) bolts, (4) nuts and (2) O-rings. GF15/26 flanges are for use with Grundfos UP15, UPS15, UP26, UPS26 and Alpha series pumps. GF40/43 are for UP43 and UPS43 series pumps. Union kits are for use with all Grundfos pumps with union outlets, including models in UP, UPS and Comfort series.