Flange, Compatible Pipe Size 1 1/4 in, Compatible with Brand Armstrong, Compatible with Grainger Part Number 32UN04, 32UN05, 32UN13, 32UN20, Compatible with Series Astro 2, For Use With Potable Systems No, Compatible with Manufacturer Model Number 110223-305, 110223-320, 110223-322, 180203-686, Compatible with Pump Type In-Line Circulating Pumps, Flange Gasket Material Included, Flange Material Cast Iron, Includes (2) Flanges, (2) Gaskets, Bolts, Nuts, Maximum Ambient Temperature 230 Degrees F