The NIBCO® check valve is equipped with a bolted bonnet for maintenance accessibility. Swing checks may be installed in horizontal positions (or vertical with flow moving up). The 3% nickel iron and the stainless steel trim provide excellent corrosion resistance for the tough applications of the pulp and paper industry. Please refer to NIBCO technical data sheets, chemical resistance guides and catalogs for engineering and installation information. Choose NIBCO® check valves for the mostmore specified, versatile and economical valve option in commercial, mechanical and industrial applications. NIBCO® check valves are backed by the NIBCO 5-year 125% limited warranty. less