Based on this product's specifications, here are some alternatives and similar models
Steel flange KAN-therm 76.1 mm model 620659.6
Summary description:
KAN-therm steel flange with nominal diameter 76.1 mm (model 620659.6). Designed for creating a secure mechanical connection between pipe sections or to attach fittings and valves. Made of steel for strength and durability, suitable for plumbing and heating installations where a flanged connection is required. Used in building service and industrial piping systems.