Most circulator pumps in hydronic heating systems connect to system piping via a flanged connection. The flanges needed to make these connections are not usually included with the circulator and are available in several different pipes sizes with either sweat or threaded connections. SupplyHouse.com carries pump flanges from all the leading circulator and flange manufacturers.
Shut-off flanges (also known as service or isolation flanges) can make the job of servicing or replacing a circulator much easier. These flanges isolate the pump from the rest of the system, ensuring that only water between the flanges will be lost and that the entire system will not have to be drained and refilled.
For more information on circulator pump replacement, watch our new video.
