Conbraco 4A-4A3-3AM Preventer

As a direct replacement for the legacy 40-4A3-3AM, the Apollo Conbraco 4A-4A3-3AM is a 1/2" FNPT dual check backflow preventer engineered for reliable protection in residential and commercial water supply lines. Built with a rugged forged brass body, this DCAP4A series assembly utilizes an intermediate atmospheric port to vent pressure between check valves, preventing back-siphonage and backpressure of non-hazardous substances. This model features independently acting check valves and is ASSE 1012 certified, ensuring high-performance flow with minimal pressure loss. Designed for non-potable applications strictly, it handles a 175 psi pressure rating and temperatures up to 210°F. The top-access design allows for streamlined maintenance in the field, making it a staple for contractors prioritizing long-term durability and ease of service.

• Direct Replacement: Seamlessly replaces the older 40-4A3-3AM model without piping modifications.
• Advanced Protection: Integrated atmospheric vent provides a secondary fail-safe against backflow conditions.
• Durable Construction: Features a forged brass body and stainless steel internal springs for maximum corrosion resistance.
• Field Serviceable: Top-entry check valve modules allow for quick inspection and part replacement without removing the unit from the line.
• High Temperature Range: Rated for water service from 33°F up to 210°F.

Is the 4A-4A3-3AM suitable for drinking water?
No, this specific model is a non-lead-free version intended for non-potable applications. For potable water systems, the lead-free (LF) equivalent must be used to comply with local codes.

Does this unit require special tools for maintenance?
The DCAP4A series is designed for ease of repair; no special tools are required to access or service the internal modular check cartridges.

What is the difference between the 40 and 4A series?
The 4A-4A3-3AM is the updated technical revision of the 40-4A3-3AM, offering improved performance characteristics and material standards while maintaining the same physical footprint.

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.