8" Double Check Valve Without OSY Fire Protection Device

The 8" Double Check Valve Without OSY Fire Protection Device by Zurn Wilkins is engineered for fire protection system professionals requiring a compact, corrosion-resistant backflow prevention solution. Designed to maintain potable water purity in constrained spaces, this valve ensures reliable fire service protection without the bulk of traditional OS&Y valves.

• Material Quality: Constructed with a fusion-bonded epoxy-coated ductile iron body meeting ASTM A536 standards, providing outstanding durability and corrosion resistance under fire system conditions.
• Internal Components: Equipped with 300-series stainless steel springs and fasteners to resist corrosion and sustain long-term reliability.
• Check Modules: Built with high-strength, glass-filled thermoplastic (Noryl™) that resists chemical degradation ensuring consistent, dependable performance.
• Seating Design: Features reversible, replaceable EPDM elastomer discs that offer secure sealing across varying pressures, preventing backflow effectively.
• Regulatory Approvals: UL 1469 listed, FM approved, ASSE 1015 certified, and compliant with AWWA C510 standards, confirming its suitability for fire protection and potable water safety applications.
• Operational Range: Supports continuous pressure up to 175 PSI and functions effectively in temperatures from 33°F to 140°F to meet common fire suppression system requirements.
• Connection Type: Comes with ANSI B16.1 flanged connections, facilitating straightforward integration into existing layouts.
• Installation Flexibility: Designed for horizontal or vertical upward flow installations without the need for OS&Y valve components, saving space and simplifying system design.
• Compact Footprint: Streamlined design allows use in tight mechanical rooms and underground setups where traditional OS&Y valves are impractical.

This valve solves space constraints and complexity in fire protection systems by removing the need for an external OS&Y valve, while still delivering robust backflow prevention. Its premium materials and certified reliability help building engineers and contractors minimize maintenance challenges and reduce potential leak points. Ideal for fire safety engineers focused on protecting potable water supplies, this valve enhances system integrity and compliance without compromise, ensuring clean, safe water during critical fire emergency operations.