This Durst #40M steam radiator vent valve (Model A906) is a float-type, non-adjustable air vent designed for one-pipe steam heating systems. It features a 1/8-inch IPS (NPT) angled male connection and is constructed from chrome-plated material for durability and corrosion resistance. The valve effectively balances heating by releasing air to allow steam to fill the radiator quickly and quietly. With a maximum operating pressure of 6 psi, it installs easily on most standard steam radiators to improve heating efficiency and eliminate common issues like banging or hissing

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