Conbraco Industries 4A-203-A2F Preventer

The Conbraco Industries 4A-203-A2F is a professional-grade 1/2" bronze backflow preventer test cock designed for high-precision field testing of reduced pressure zone (RPZ) and double check valve assemblies. This SAE threaded test cock is the direct engineering successor to the 4A-203-T2F, offering a refined ball valve design for reliable shutoff during differential pressure testing. Constructed from heavy-duty bronze, it features stainless steel handles and internal components to resist corrosion in harsh mechanical room environments. As a critical component of Apollo 4A Series backflow systems, this part ensures technicians can verify the performance of the relief valve and check modules without leakage. The straight configuration and NPT connection points allow for seamless integration into existing potable water protection setups. This unit is built to withstand operating pressures up to 175 psi and is specifically engineered to handle the demands of commercial backflow testing and seasonal maintenance cycles.

• Direct Replacement Logic: Serves as the updated technical equivalent for the legacy 4A-203-T2F model, ensuring simplified inventory management.
• Enhanced Durability: Features an all-bronze body and stainless steel trim to prevent seizing and hardware failure in high-humidity areas.
• Precision Testing: Equipped with SAE flare test ports to provide a secure, leak-free interface for standard differential pressure gauge hoses.
• Field Maintenance: Integrated quarter-turn ball valve provides positive shutoff, essential for troubleshooting check valve seating and relief valve discharge issues.

Common Questions

Is the 4A-203-A2F compatible with older 4A-200 series assemblies?
Yes, this test cock is the standard replacement for 1/2" 4A series reduced pressure principle assemblies. It is designed to replace the 4A-203-T2F while maintaining the same center-line dimensions and port clearance for testing tools.

Can this part be used in lead-free applications?
The 4A-203-A2F is manufactured from standard bronze. For potable water systems requiring compliance with Federal Public Law 111-380, the 4ALF series (Lead-Free) equivalent should be specified to meet strict weighted average lead requirements.

What is the difference between the A2F and T2F versions?
The 'A' designation represents the latest engineering revision of the ball valve assembly, providing improved seal longevity and handle ergonomics over the older 'T' series, while maintaining identical installation footprints.

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.