6" Double Check Valve Assembly with OS&Y for Backflow Prevention
6" Double Check Valve Assembly with OS&Y for Backflow Prevention
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The 6" Double Check Valve Assembly with OS&Y is engineered specifically for fire protection and plumbing professionals requiring reliable backflow prevention in demanding commercial and industrial settings. Its robust construction and advanced design provide effective contamination control while simplifying inspection and maintenance tasks.
- Heavy-Duty Cast Iron Body: Made from ASTM A126 Class B cast iron, the valve housing withstands high flow rates and pressures typical in fire sprinkler systems, ensuring long-term durability.
- Corrosion-Resistant Internals: Equipped with 300-series stainless steel springs and fasteners, the assembly resists rust and mechanical wear, supporting consistent operation in challenging environments.
- Dual Glass-Filled Noryl™ Check Modules: These thermoplastic modules maintain precise dimensional stability and flow integrity, preventing backflow contamination with exceptional reliability.
- Reversible EPDM Elastomer Valve Seats: The replaceable seats provide a secure, leak-free seal and simplify routine maintenance, reducing downtime and service costs.
- OS&Y Stem with Visual Indicator: The Outside Screw and Yoke design offers an external visual cue of valve position, streamlining inspections and system audits without disassembly.
- Grooved End Connections (GxG): Following AWWA C606 standards, these connections allow fast, welding-free installation and easy removal for maintenance in tight spaces.
- Regulatory-Compliant Certifications: UL 1469, FM Approval, ASSE 1015, and AWWA C510 endorsements ensure the assembly meets stringent safety and industry performance standards.
- Versatile Installation: Suitable for both horizontal and vertical upward flow piping layouts, adapting to complex fire suppression networks in municipal, industrial, and commercial facilities.
This 6" double check valve assembly plays a critical role in preventing reverse flow contamination in high-demand fire protection systems, safeguarding potable water supplies and complying with NFPA 13 and NFPA 25 requirements. Its rugged materials reduce the risk of failure under heavy use, while the visible OS&Y stem expedites routine checks and emergency responses. The grooved ends facilitate quick installation and service without costly welding, making it ideal for facilities seeking dependable, low-maintenance backflow prevention integrated into large-scale fire sprinkler networks.
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