This 1-1/2 in isolation pump flange is designed to isolate circulator pumps to facilitate circulator pump replacement or repairs. It features a brass body and flange with bottom loaded blowout proof stem, Buna-N stem O-ring seal, virgin PTFE seat and optional T-handle included. The pressure is rated 600 psi WOG and the maximum temperature is 406 F at 100 psi.