10" 3000SS DOSY Double Check Valve Backflow Preventor

Safeguard potable water supplies in commercial, industrial, and residential fire protection systems with the 10" 3000SS DOSY Double Check Valve Backflow Preventer. This assembly installs directly into water supply lines to prevent dangerous backflow contamination while maintaining consistent water flow control and an airtight seal across your piping network.

Engineered to satisfy critical life safety benchmarks, this backflow assembly supports mandatory testing protocols required by NFPA 25 standards. The service-friendly design allows trade contractors and facility managers to perform routine inspections and internal component replacements efficiently, minimizing downtime during scheduled maintenance.

• Durable Body Construction: Features a ductile iron body paired with 300-series stainless steel springs and fasteners for enhanced longevity in harsh environments.
• High-Strength Check Modules: Glass-filled check modules provide reliable wear resistance during continuous operation.
• Reversible Components: EPDM elastomer seat discs are reversible and replaceable to streamline servicing on the job site.
• Flexible Installation: Accommodates horizontal or vertical installation with upward water flow to fit tight mechanical room layouts.
• High Pressure Rating: Built to handle a maximum working pressure of up to 175 PSI (12.1 bar).

Always verify local Authority Having Jurisdiction (AHJ) mandates and consult the manufacturer's engineering data sheets before commencing piping or backflow installation. Please note that this product is Non-Refundable and Non-Cancellable.

Documentation: Download Manufacturer Technical Data & Cut Sheet (PDF)