This NIBCO cast iron spring-actuated silent check valve reduces noise and ensures quiet operation. Check valves prevent backflow by automatically closing when fluid reverses direction. The check valve is recommended for automatic fire sprinkler applications (especially higher pressure systems such as hi-rise buildings) where space is a premium. The twin disc check valve is grooved end style. Grooved silent check valves may be installed in horizontal positions (or vertical with flow moving up). This valve is listed by Underwriters Laboratories of the US and Canada (UL/ULC). Please refer to NIBCO technical data sheets, chemical resistance guides, and catalogs for engineering and installation information. Choose NIBCO check valves for the most specified, versatile, and economical option in commercial, mechanical, fire protection, and industrial applications. NIBCO check valves are backed by the NIBCO 5-year 125% limited warranty. Features 350 psi/24.1 bar non-shock water working pressure (WWP) UL Spring actuated Bronze disc Renewable disc Grooved end connections Use in U.S. drinking water applications is prohibited after January 3, 2014 Conforms to ANSI/AWWA C606 for steel IPS pipe Listed by Underwriters Laboratories of U.S. and Canada (UL/ULC)
