The NIBCO boiler drain ensures trouble-free operation and ease of access. The multi-purpose drain valve is recommended for use in low-pressure water systems. The NIBCO quarter-turn boiler drain is manufactured from brass, with a PTFE seat and nitrile O-ring. The low-pressure drain includes a brass ball and brass stem. The ?? size is furnished in male threads only. 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.