The Deringer 50 Reduced Pressure Detector Assembly with Stainless Steel Springs is a precision-engineered backflow preventer designed specifically for fire protection systems. It serves facility managers, fire protection contractors, and plumbing engineers by ensuring potable water safety through reliable contamination prevention in sprinkler and suppression setups.

• Main Body Material: Constructed from robust ductile iron meeting ASTM A536 standards, providing exceptional corrosion resistance and mechanical strength for demanding fire service environments.
• Corrosion-Resistant Components: Equipped with 300-series stainless steel springs and fasteners, maintaining durability and performance even in continuously wet conditions.
• Sealing and Hydraulics: Features elastomer seals rated for temperatures between 33°F to 140°F (0.5°C to 60°C) and hydraulically optimized design to minimize pressure loss while preventing backflow effectively.
• Regulatory Compliance and Certification: UL Listed (UL 312), FM Approved, meets NFPA 13 and NFPA 25 standards, and certified to ASSE Standard 1013 for reduced pressure backflow prevention assemblies.
• Operational Capacity: Designed for operating pressures up to 175 PSI (12.1 bar), compatible with both horizontal and vertical upward flow installations.
• Connection Flexibility: Available with ANSI B16.1 flanged ends or grooved ends compliant with AWWA C606 standard, facilitating integration into various piping configurations.

This assembly delivers dependable protection for potable water systems by preventing backflow contamination, critical in fire sprinkler applications. Its ductile iron body and corrosion-resistant stainless steel internals ensure long-lasting operation, even in harsh conditions such as underground or mechanical room installations. The Deringer 50’s flexible installation options and adherence to stringent regulatory standards provide confidence to property owners and contractors managing fire safety systems. By addressing common issues like corrosion, pressure fluctuations, and system compatibility, this unit reduces maintenance needs and supports sustained fire protection readiness in commercial, residential, and healthcare facilities.