6" Double Check Valve Assembly OS&Y by OS&Y for Water Systems

The 6" Double Check Valve Assembly OS&Y is designed for professionals overseeing commercial, industrial, or fire protection water systems who require reliable backflow prevention on medium to large diameter pipes. It combines durability and user-friendly operation to maintain water safety and system integrity.

• Heavy-Duty Iron Body: Constructed from corrosion-resistant iron, this valve assembly withstands demanding industrial environments and fluctuating water pressures.
• Dual Check Valves: Equipped with stainless steel springs and corrosion-resistant fasteners, these components effectively prevent backpressure and backsiphonage, safeguarding potable water from contamination.
• Outside Screw and Yoke (OS&Y) Gate Valve: Features an external stem and yoke that provide clear, visual confirmation of valve position, facilitating easy on-site inspections and manual control without disassembly.
• Fixed Connection Fittings: Engineered specifically for 6-inch piping, ensuring a secure, leak-resistant joint for reliable installation and long-term durability.
• Regulatory Compliance: Meets stringent standards such as UL 1469, FM Approval, ASSE 1015, and AWWA C510, aligning with fire protection requirements and backflow prevention protocols.
• Operational Pressure and Temperature: Supports pressures up to 175 PSI (12.1 bar) and standard commercial water system temperatures, making it suitable for a broad range of plumbing and fire protection setups.

This valve assembly is essential for facility engineers and maintenance teams focused on protecting water quality and complying with fire safety codes like NFPA 13 and NFPA 25. By preventing backflow contamination and providing visible valve status, it reduces downtime during inspection and maintenance. Its robust construction and leak-resistant connections translate to dependable, continuous operation in critical infrastructure environments.