Conbraco 4A-205-A2F Preventer

The Conbraco 4A-205-A2F is a professional-grade 1-inch reduced pressure principle backflow preventer (RP4A) engineered for high-hazard domestic and commercial potable water applications. This lead-free bronze body backflow assembly is the direct performance successor to the 4A-205-T2F, offering enhanced field serviceability and lower head loss across all flow rates. Built for 175 PSI maximum working pressure, the unit features top-access modular check valve cartridges with captured stainless steel springs, allowing technicians to perform maintenance without specialized tools. The inclusion of SAE test cocks and full-port ball valves with stainless steel handles ensures long-term corrosion resistance and reliable isolation. Utilizing chloramine-resistant silicone seat discs and elastomers, this assembly is optimized for chemically treated municipal water systems where durability is paramount. As an Apollo RP4A backflow preventer, it provides a compact footprint for tight mechanical rooms while maintaining ASSE 1013 and CSA B64.4 compliance for cross-connection control.

• Enhanced Serviceability: Top-mounted captured spring check valve cartridges simplify seat replacement and internal inspections in the field.
• Corrosion Resistance: Heavy-duty bronze construction paired with stainless steel ball valve handles and trim prevents seizing in harsh environments.
• Updated Performance: Direct upgrade for the 4A-205-T2F, featuring improved flow characteristics and identical installation dimensions.
• Testing Efficiency: Standard SAE threaded test cocks and protectors facilitate rapid pressure differential testing and winterization.
• System Longevity: Reversible silicone seat discs extend the interval between part replacements, reducing lifecycle costs for the contractor.

Is the 4A-205-A2F a direct replacement for the 4A-205-T2F?
Yes, this model is the updated version of the T2F series. It maintains the same face-to-face dimensions and 1-inch NPT connection points, allowing for a seamless swap-out without repiping.

Does this assembly meet code for high-hazard backflow protection?
The RP4A series is designed as a Reduced Pressure Zone (RPZ) assembly, providing the highest level of protection against both back-siphonage and backpressure in applications where health hazards are present.

Are special tools required to service the check valves?
No, the modular design and top-access covers allow for check valve and relief valve service using standard shop tools, making it a preferred choice for service technicians.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.