The 4" Double Check Valve Assembly OS&Y Female x Grooved by Zurn Wilkins is a durable backflow prevention device designed for fire protection and plumbing systems. It is ideal for commercial and industrial users who require reliable contamination protection while maintaining system efficiency.

• Durable Construction: Made from corrosion-resistant materials to ensure longevity in harsh fire protection environments.
• OS&Y Female x Grooved Connection: Combines Outside Stem & Yoke design with grooved fittings for secure installation and straightforward inspection.
• Double Check Valve Technology: Features two independent check valves that provide a robust barrier against backflow, safeguarding potable water supplies.
• Low Pressure Loss: Engineered to sustain optimal water pressure and flow, minimizing impact on fire suppression system performance.
• Maintenance-Friendly Design: Components are easily accessible, enabling quick servicing and reducing system downtime.
• Standard 4” Size: Compatible with a broad range of systems, making it versatile for varied commercial and municipal applications.
• Compliance and Safety: Meets stringent industry standards, supporting adherence to fire protection codes and regulations.

This valve assembly effectively prevents water contamination caused by backflow, a vital consideration in fire protection systems where integrity and reliability are critical. Designed to withstand corrosion and facilitate maintenance, it reduces operational interruptions and associated costs. Its secure OS&Y and grooved connections ensure steady integration into existing systems, while the low-pressure loss design maintains efficiency during emergencies. Whether managing fire safety in commercial buildings, manufacturing plants, or municipal infrastructures, this product delivers consistent protection and ease of maintenance, helping safeguard both water quality and compliance with safety standards.