The Taco 561-5 is a 3-way zone valve with a 3/4" sweat connection designed for use with hydronic systems. This well-built valve can be easily adjusted with its normally closed feature. It comes with a 3-wired terminal block and a 2-way body pattern with an end switch. This easy-to-install valve provides added efficiency and works quietly without compromising performance. It is made of bronze which makes it more reliable, requiring lesser maintenance. Taco is a company that produces plumbing and HVAC products ranging from pipes, fittings, parts, and more. By providing residential, commercial and as well as industrial plumbing solutions, Taco has created a wide variety of products to choose from. PlumbersStock offers a range of products like faucets, toilets, plumbing supplies, and much more