The NIBCO® quarter-turn boiler drain ensures trouble-free operation. The low-pressure drain features a brass ball and nitrile O-ring seal. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. Choose NIBCO® flow control products for the most specified, versatile and economical option in commercial and residential applications. NIBCO® quarter-turn boiler drains are backed by the NIBCO 2-year limited warranty.