W920WLF4 4" Lead Free Twin Disc Wafer Check. The NIBCO lead-free cast iron wafer style check valve is spring actuated with Buna-N seat. The spring return reduces noise for quiet operation. The twin disc check valve is wafer style to fit between standard flanges. The check valve includes renewab... - W920WLF4 4" Lead Free Twin Disc Wafer Check.
NLN50XK 6" Lead Free Twin Wafer Check. Check valves prevent backflow by automatically closing when fluid reverses direction. The check valve is recommended for commercial and industrial water applications only. Wafer checks may be installed in horizontal positions (or vertical with flow m... - NLN50XK 6" Lead Free Twin Wafer Check.
NLN52XM 10" Twin Disc Grooved Check. The check valve includes renewable bronze discs. Grooved silent check valves may be installed in horizontal positions (or vertical with flow moving up). Please refer to NIBCO technical data sheets. chemical resistance guides and catalogs for engineer... - NLN52XM 10" Twin Disc Grooved Check.
