4" Double Check Assembly by Ames with GXG OSY Valve Fire Protection Backflow Preventor Valve

The 4" Double Check Assembly by Ames with GXG OS&Y Valve installs inline within commercial fire protection systems, industrial plumbing grids, and municipal water networks to protect the potable water supply from reverse flow hazards and contamination. Utilizing a double check valve assembly, this component actively blocks backward water movement. Integrated GXG OS&Y (Outside Stem & Yoke) valves provide precise flow control and reliable shutoff capabilities required during system maintenance, testing, and emergency operations.

To satisfy commercial code compliance and facility safety requirements, this assembly meets strict regional standards for backflow prevention in cross-connection control applications, aligning with mandates typically governed by local authorities and plumbing codes.

Key Features & Construction

• Corrosion-Resistant Materials: Built to withstand demanding conditions found in industrial and fire protection environments, maximizing operational longevity.
• 4-Inch Sizing: Engineered specifically for commercial fire sprinkler connections to balance high flow capacity with straightforward installation.
• Integrated OS&Y Shutoff Valves: Globe or Angle pattern Outside Stem & Yoke valves offer immediate visual position verification and dependable flow control.
• Maintenance-Friendly Design: Streamlined architecture allows for efficient field inspections, repairs, and part replacements to minimize downtime.

Contractors must verify local Authority Having Jurisdiction (AHJ) cross-connection requirements and consult manufacturer technical cut sheets prior to installation. Note that this component is strictly non-refundable and non-cancellable.

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