The Taco Circulation Companion 110-253FBP4 is a 1-1/4" NPT iron pump accessory designed for use in circulator pumps. It includes 2 flanges and 4 nuts/bolts for secure installation. Trusted for its durability and quality, the Taco brand ensures reliable performance in hydraulic, pneumatic, and plumbing systems. This product is a valuable addition to any industrial or commercial setting requiring efficient pump circulation.