Technical Specifications (Material Focus)
This 10" Double Check Valve is constructed for robust performance in demanding fire protection applications. The main body is crafted from fusion-bonded epoxy-coated ductile iron (ASTM A536), providing corrosion resistance and mechanical strength essential for both subterranean and mechanical room installations. Internal components, including springs and fasteners, are manufactured from 300-series stainless steel to ensure longevity and resistance to corrosion under varying water qualities. The valve incorporates glass-filled Noryl™ or equivalent high-strength thermoplastic check modules that maintain dimension stability under pressure fluctuations. The OS&Y (Outside Stem and Yoke) design facilitates straightforward operation and maintenance by exposing the stem, allowing visual confirmation of valve position without disassembly. Seating surfaces utilize reversible and replaceable EPDM elastomer discs selected for chemical resistance and durable seal integrity in fire protection service water systems.
Regulatory Compliance
This valve assembly strictly adheres to key industry standards critical for fire protection system reliability and safety:
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UL Listing: Compliant with UL 1469, certifying the valve for use in fire service water control.
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FM Approval: Tested and authorized by Factory Mutual for fire protection applications, ensuring performance under fire service conditions.
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ASSE 1015: Meets the Backflow Prevention Assemblies criteria from the American Society of Sanitary Engineering.
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AWWA C510: Conforms to American Water Works Association standards for double check valve assemblies, guaranteeing operational durability and safety.
Additionally, the valve supports compliance with
NFPA 13 and
NFPA 25 standards, addressing installation, inspection, testing, and maintenance protocols for sprinkler and fire protection systems.
Operational Compatibility
Designed to meet the rigorous demands of commercial and industrial fire protection systems, this double check valve operates reliably under the following conditions:
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Working Pressure: Rated for a maximum operating pressure of 175 PSI (12.1 bar), suitable for most municipal fire water supplies and industrial system pressures.
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Temperature Range: Designed to maintain seal integrity and mechanical performance within 33°F to 140°F (0.5°C to 60°C), accommodating typical potable and fire protection water temperatures.
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Connections: Available in flanged end configurations compliant with ANSI B16.1 standards, ensuring compatibility with standard fire protection piping systems.
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Installation Orientation: Engineered for flexibility in installation, supporting both horizontal and vertical upward flow arrangements without compromising valve functionality.
This 10" Double Check Valve with OS&Y design addresses the critical need to prevent backflow contamination in fire protection water supplies, ensuring that pollutants cannot enter potable or fire sprinkler systems. Its OS&Y configuration allows technicians to perform visual inspections without disassembling components, reducing maintenance time and system downtime. The use of stainless steel internal parts and corrosion-resistant body coatings extends service life under harsh industrial conditions.
Especially suited for commercial buildings, industrial facilities, and municipal fire protection systems, this valve offers a reliable solution for backflow prevention where non-health hazard pollutants are a concern. Its compliance with stringent UL and FM standards provides documented assurance for engineers and code officials that it meets safety and reliability requirements.
When compared to other backflow devices, the OS&Y double check valve design simplifies inspection and maintenance procedures, enhancing operational efficiency over time. The durable EPDM seating accommodates fluctuating water pressures and temperature variations typical of fire protection environments.
For system designers and maintenance professionals, selecting this 10" double check valve ensures adherence to NFPA-recommended testing protocols, supported by integrated test cock provisions (if installed downstream), enabling straightforward annual inspections and differential pressure testing as mandated by local fire codes and standards.
In summary, this double check valve delivers precise backflow prevention with easy maintenance and robust construction specifically tailored for fire protection systems, helping safeguard water quality integrity while maintaining compliance with regulatory mandates.
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