Conbraco Industries 50-502-301 Valve

The Conbraco Industries 50-502-301 Valve is a 1/2 inch FNPT bronze 2-piece shut-off ball valve engineered for critical main burner gas applications. This model serves as the high-performance direct replacement for the obsolete 50-203-02, ensuring seamless mechanical compatibility without requiring manifold modifications. Built with a rugged ASTM B584 bronze body and a chrome-plated brass ball, it is designed to withstand the corrosive environments common in industrial and commercial HVACR systems. The valve features a single 1/8 inch NPT side tap ideally positioned for a pilot light connection or pressure gauge integration, simplifying field installation and diagnostics.

Operating with a full port design, this Apollo GB-50 series valve maintains maximum BTU capacity for natural gas, LP gas, and air-gas mixtures. It is rated for pressures up to 5 psig and features RPTFE seats and a brass stem for dependable quarter-turn sealing. The reversible plated steel lever handle provides flexible orientation in tight mechanical rooms, allowing technicians to achieve optimal clearance. Certified to UL 125, UL 842, and CSA ANSI Z21.15 standards, this valve is a standard-issue component for contractors maintaining boiler systems, furnaces, and commercial water heaters where safety and precise flow control are mandatory.

• Direct Compatibility: Engineered as a drop-in replacement for 50-203-02 to reduce downtime during burner service.
• Integrated Tapping: Features a factory-machined 1/8 inch NPT pilot tap, eliminating the need for external T-junctions.
• Full Flow Capacity: The full port construction ensures zero restriction in gas volume, crucial for maintaining high-BTU burner performance.
• Corrosion Resistance: ASTM B584 bronze construction protects against internal scaling and external environmental degradation.
• Reliable Sealing: Equipped with RPTFE softgoods and a chrome-plated ball for smooth operation and bubble-tight shut-off.

Is the 50-502-301 compatible with LP gas systems?
Yes, this valve is CSA and UL listed for use with natural gas, manufactured gas, liquefied petroleum (LP), and LP gas-air mixtures.

What is the primary difference between this and the 50-203-02?
The 50-502-301 is the modern production equivalent from the Apollo GB-50 series. It maintains the same 1/2" FNPT footprint and pilot tapping to serve as a direct functional replacement.

Can the handle be oriented in either direction?
The valve includes a reversible plated steel lever, allowing you to flip the handle orientation to accommodate specific piping configurations or clearance constraints.

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.