NIBCO KW900W Wafer Check Valve | 3-Inch to 12-Inch Options

Manage fluid control reliably and prevent backflow in your commercial piping installations with the NIBCO KW900W wafer check valve. This automatic check valve installs directly into your fire protection systems, water control lines, and automated sprinkler assemblies to ensure dependable one-way directional flow.

Engineered to comply with rigorous life safety requirements under standard commercial installation codes such as NFPA 13 and NFPA 25, this valve provides critical backflow prevention to protect municipal water supplies and internal infrastructure. Facility managers and mechanical contractors rely on its quiet operation and spring-actuated mechanism to reduce water hammer and eliminate disruptive pipeline noise during system activation.

Key Features & Construction

• Wafer Body Style: Compact, space-saving design fits tightly between standard pipeline flanges for streamlined installation in restricted mechanical spaces.
• Spring-Actuated Double Disc: Closes rapidly to prevent reverse flow and minimize water hammer for quiet, reliable operation.
• Ductile Iron Construction: Rugged, heavy-duty body built to withstand demanding industrial and fire protection service environments.
• Lead-Free Compliance: Select SKU configurations meet strict lead-free standards for potable water and specialized plumbing systems.
• Versatile Sizing: Available in multiple diameters ranging from 3 inches to 12 inches to match exact commercial pipe requirements.

Technical Specifications & Compliance Table

Verify all local Authority Having Jurisdiction (AHJ) mandates, engineering submittals, and system sizing requirements prior to ordering. Consult the manufacturer technical specifications to confirm exact material compatibility, lead-free status, and flange connections for your specific layout.

Documentation: Download Manufacturer Technical Data & Cut Sheet (PDF)