The 8" Double Check Assembly with FxG OSY is a robust backflow preventer specifically engineered for commercial and residential fire protection systems. It ensures the integrity of potable water supplies by preventing contamination while complying with essential fire safety regulations.

• Durable Construction: Fusion-bonded epoxy-coated ductile iron body (ASTM A536) offers superior resistance to corrosion and mechanical wear in demanding fire protection environments.
• High-Quality Internal Components: Forged 300-series stainless steel springs and fasteners maintain rust resistance and durability for reliable long-term operation.
• Advanced Check Modules: Glass-filled Noryl™ thermoplastic check modules provide high strength and chemical resistance, enhancing performance and lifespan.
• Replaceable EPDM Seats: Reversible and replaceable EPDM elastomer discs ensure a secure valve seal and consistent backflow prevention with easy maintenance.
• Regulatory Compliance: Certified to UL 1469, FM Approved, ASSE 1015, AWWA C510 compliant, and meets NFPA 13 and NFPA 25 standards for fire protection systems.
• Operational Range: Supports up to 175 PSI (12.1 bar) working pressure with temperature tolerance from 33°F to 140°F (0.5°C to 60°C), ideal for typical municipal and building water conditions.
• Flexible Installation: Available with ANSI B16.1 flanged ends or Factory Mutual-approved AWWA C606 grooved ends for secure, adaptable plumbing connections in tight mechanical spaces.
• Versatile Orientation: Designed for both horizontal and vertical (upflow) installations, accommodating diverse fire protection system layouts.
• FxG OS&Y Gate Valves: Outside Screw & Yoke valves provide positive shut-off capability, allowing maintenance without system disruption.
• Built-In Test Cocks: Facilitates routine diagnostics and annual backflow testing to meet fire code compliance easily and reduce downtime.

This assembly safeguards water quality by reliably preventing backflow contamination in fire protection systems, a critical requirement for life safety and regulatory adherence. Its corrosion-resistant materials and precise valve seals minimize maintenance demands and extend service life under harsh conditions. Whether installed underground or within mechanical rooms, it offers dependable performance and easy inspection, ensuring uninterrupted fire safety water supply. The product suits engineers, contractors, and facility managers seeking a durable, code-compliant solution for commercial fire sprinkler protection and potable water isolation.