The Nibco® lead-free ductile iron, wafer style check valve is spring actuated which reduces noise for quiet operation. Check valves prevent backflow by automatically closing when fluid reverses direction. The check valve is recommended for automatic fire sprinkler applications where space is a premium.

Spring Actuated Wafer Style Fire Protection Check Valve, Series/Model: Model KW-900-W, Nominal Size: 4 IN, Pressure Rating: 250 PSI Non-Shock (WWP), Class 125 Pressure Class, Ductile Iron Body Material, Trim Material: Bronze Disc, Seat Material: Rubber, Material Standard: Body: ASTM A536, Disc: ASTM B584, Material Specification: Disc: UNS C87600, Industry Standards: C/US UL Listed, FM Approved, WQA To NSF/ANSI 372 Certified, 2.63 IN Width, Lead Free: No, Other Physical Dimension: 7-3/4 IN Diameter, 3.063 IN Flange Bore Diameter

• Valve pressure rating 250 PSI/17.2 BAR non-shock cold working pressure
• Spring actuated
• Renewable discs
• Rubber seat
• Double door
• To be installed between standard class 125 flanges
• Wafer connection

• Warranty Information https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/Nibco_125NIBBRMS_Warranty_Information.pdf
• Catalog https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/Nibco_NLM150H_Catalog.pdf
• Specification Sheet https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/Nibco_NLM150H_Specification_Sheet.pdf