4" Viking Reduced Pressure OS&Y Low Flow System Valve

The 4" Viking Reduced Pressure OS&Y Low Flow System Valve is a specialized backflow prevention device designed for fire protection professionals who require reliable, low flow control in both new and retrofit sprinkler system installations. Its robust construction and certified performance make it a trusted component for maintaining water system integrity and meeting stringent safety regulations.

• Durable Construction: Manufactured with high-strength cast iron and corrosion-resistant coatings to withstand demanding fire protection environments.
• High-Quality Internal Components: Features stainless steel springs and molded rubber diaphragms for reliable sealing and long-lasting performance under varying flow conditions.
• OS&Y Gate Valve Design: Equipped with a rugged stem and yoke that provides clear position indication and easy manual operation during maintenance and testing.
• Regulatory Certifications: UL Listed under UL 312, FM Approved, and compliant with NFPA 13 and NFPA 25 standards, ensuring dependable backflow prevention compliant with fire safety codes.
• Pressure and Flow Capacity: Supports operating pressures up to 175 psi (12.1 bar) and optimized specifically for low flow rates typical in fire sprinkler systems.
• Standardized Flanged Connections: Comes with 4" ANSI Class 125 flanged fittings for seamless integration into commercial and industrial fire sprinkler piping setups.
• Maintenance-Friendly Design: The OS&Y style facilitates straightforward inspection and servicing, minimizing system downtime and maintaining continuous potable water protection.

This valve effectively prevents backflow contamination in fire protection systems, especially where intermittent or low flow conditions are common. Its sturdy materials and compliance with rigorous fire protection standards provide peace of mind by safeguarding water quality and ensuring regulatory adherence. Ideal for upgrading existing fire sprinkler infrastructure or incorporating into new systems, the 4" Viking Reduced Pressure OS&Y Low Flow System Valve offers a durable, easy-to-maintain solution that supports operational efficiency and reliable fire safety management.