10" Reduced Pressure Backflow Detector With OSY Valve

The 10" Reduced Pressure Backflow Detector with OS&Y Valve installs directly into fire protection and commercial plumbing water lines to safeguard potable water supplies from contamination caused by pressure fluctuations. Designed for continuous performance, this specialized assembly prevents hazardous backflow while accommodating routine inspections and repairs.

This unit satisfies mandatory code requirements under NFPA 13 and NFPA 25 installation and maintenance standards. It carries essential agency approvals including UL 312 listing, FM approval, and ASSE 1013 certification for regulatory compliance on commercial and residential job sites.

Key Features & Construction

• Fusion-Bonded Ductile Iron Body: Built from ASTM A536 ductile iron to provide robust resistance against mechanical stress and corrosion in demanding water environments.
• Corrosion-Resistant Internals: Equipped with 300-series stainless steel springs and fasteners to ensure long-lasting performance and consistent valve operation.
• Precision Check Modules: Fabricated from glass-filled Noryl thermoplastic to maintain structural integrity and dependable sealing under pressure variations.
• Replaceable EPDM Seats: Features reversible elastomer discs that create a secure, positive seal against backflow while preserving water purity.
• OS&Y Valve Design: Incorporates an Outside Stem and Yoke configuration that delivers clear valve position indication to streamline isolation and servicing.
• Flexible Orientation: Compatible with both horizontal and vertical piping alignments for seamless integration into existing 10-inch lines.
• High Pressure and Temperature Limits: Supports working pressures up to 175 PSI and operating temperatures ranging from 33°F to 140°F.

Technical Specifications & Compliance Table

Contractors and facility managers must verify local Authority Having Jurisdiction (AHJ) requirements and consult manufacturer technical data sheets prior to installation.

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