6" Fig 30G DCDA With OSY LM Fire Protection System

The 6" Fig 30G Double Check Detector Assembly (DCDA) with Outside Stem & Yoke (OS&Y) valve and integrated Lever Meter is a specialized backflow preventer designed for fire protection systems. Ideal for fire protection engineers, facility managers, and plumbing professionals, this assembly ensures the safety of potable water by preventing contamination from fire service lines while providing precise flow monitoring.

• Durable Construction: Crafted from corrosion-resistant ductile iron with a protective coating, suitable for outdoor and underground applications where longevity and reliability are critical.
• Corrosion-Resistant Internal Components: Stainless steel springs and fasteners (300-series) ensure dependable operation despite constant water exposure.
• Advanced Check Valves: Dual check modules made from glass-filled thermoplastic materials (Noryl™ equivalent) offer low pressure loss and extended service life while maintaining effective backflow prevention.
• Reversible Valve Seats: EPDM elastomer discs provide a tight seal adaptable to varying temperature and pressure conditions, enhancing system integrity.
• OS&Y Valve with Visual Status: Outside Stem and Yoke gate valve offers clear external indication of valve position, improving maintenance safety and operational control.
• Integrated Lever Meter: Continuous flow measurement helps detect leaks or unauthorized water usage early, supporting proactive system management.
• Standards and Certifications: UL 1469 Listed, FM Approved, complies with ASSE 1015, NFPA 13, NFPA 25, and AWWA C510 standards, ensuring regulatory adherence and industry compatibility.
• Operational Range: Rated for pressures up to 175 PSI (12.1 bar) and temperatures from 33°F to 140°F (0.5°C to 60°C), fitting within typical municipal water supply and fire system parameters.
• Installation Flexibility: Available with 6-inch ANSI B16.1 flanged ends and designed for both horizontal and vertical (upward flow) orientation to suit diverse mechanical and underground vault setups.

This DCDA assembly addresses the critical need for contamination protection in fire protection water systems by effectively detecting backward flow and unauthorized water movement. Its durable materials and precise flow monitoring provide facility managers with reliable control and early warning capabilities, reducing the risk of water supply contamination and system downtime. By meeting multiple industry standards, it simplifies compliance and integrates seamlessly into existing infrastructure, making it a trusted choice for safeguarding potable water while maintaining the effectiveness of fire sprinkler systems.