8 Febco 850 Double Check OSY Backflow Prevention System

Protect potable water supplies in commercial plumbing and fire protection systems with the CMB Industries - Febco 8 Febco 850 Double Check OSY Backflow Prevention System. This assembly prevents contaminant backflow in fire sprinkler lines, standpipes, and fire pump connections.

• Corrosion-Resistant Construction: Manufactured from fusion-bonded epoxy-coated ductile iron compliant with ASTM A536 to withstand harsh environments.
• Durable Internal Components: Utilizes 300-series stainless steel springs and fasteners for mechanical strength and extended service life under cyclic pressures.
• Reliable Check Modules: Features glass-filled Noryl™ thermoplastic check components resistant to chemical degradation and dimensional changes.
• Effective Sealing: Reversible and replaceable EPDM elastomer discs maintain a positive seal to prevent backflow and minimize pressure loss.
• Regulatory Compliance: UL 1469 Listed, FM Approved, and conforms to ASSE 1015, AWWA C510 standards, supporting NFPA 13 and NFPA 25 codes.
• High Pressure Rating: Rated for working pressures up to 175 PSI (12.1 bar) for fire service and non-health hazard potable water applications.
• OS&Y Valve Design: Outside Stem & Yoke provides clear valve position indication to simplify routine inspections and maintenance.
• Versatile Installation: Compatible with ANSI B16.1 flanged and AWWA C606 grooved end connections, supporting horizontal and vertical upward flow configurations.
• Pre-Drilled Test Cocks: Facilitates easy and accurate system testing to ensure ongoing compliance and operational integrity.

The Outside Stem & Yoke design gives you clear valve position indication to simplify routine inspections under NFPA standards. Pre-drilled test cocks let you run accurate system tests quickly in mechanical rooms or underground vaults.