Conbraco 10-104-05 Relief Valve

The Conbraco 10-104-05 is a high-capacity ASME Section IV certified bronze safety relief valve designed specifically for the protection of hot water heating boilers and hydronic systems. This 3/4 inch relief valve features a 30 PSI set pressure and is engineered to handle a significant discharge capacity of 710,000 BTU/hr. Built with a rugged bronze body and a corrosion-resistant stainless steel spring, it ensures reliable overpressure protection in demanding contractor environments. The unit includes a 3/4" MNPT inlet and a 1" FNPT outlet, facilitating a straightforward fit for standard boiler manifolds. Capable of operating at temperatures up to 250°F, this Apollo 10-104-05 model is the industry standard for maintaining system integrity by preventing excessive pressure build-up from thermal expansion or control failure. Its high-flow design and EPDM seat provide a bubble-tight seal under normal operating conditions while ensuring rapid response during a pressure spike.

• ASME Section IV Certified: Verified capacity for use in safety-critical heating boiler applications.
• High BTU Rating: Handles up to 710,000 BTU/hr, making it suitable for larger residential and light commercial systems.
• Durable Construction: Features a bronze body and stainless steel internal components to prevent scale and corrosion.
• Optimized Flow: Oversized 1" outlet reduces backpressure during discharge for maximum safety.

What is the difference between the 10-104-05 and standard residential valves?
The 10-104-05 is a high-capacity safety relief valve. While standard valves may have the same 30# setting, this unit is rated for 710,000 BTU, providing much higher discharge rates required for larger boiler outputs.

Can this valve be installed horizontally?
For proper operation and to meet ASME code, relief valves should be installed in a vertical position with the drain piping sloped for gravity drainage.

Is this compatible with glycol-based hydronic systems?
Yes, the bronze construction and EPDM seating are compatible with standard water and glycol heating media up to the 250°F threshold.

This item is not eligible for free shipping.

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.