Conbraco 10-605-12 Relief Valve

The Conbraco 10-605-12 Relief Valve is a high-capacity safety solution engineered specifically for hot water heating boilers and large-scale hydronic systems. This ASME Section IV certified valve features a rugged bronze body construction and a 1-inch FNPT inlet by 1-inch FNPT outlet configuration, designed to handle demanding industrial and commercial applications. With a factory set pressure of 60 PSI and a substantial discharge capacity of 2,265,000 BTU/hr, it provides critical overpressure protection by reacting instantly to excessive thermal expansion or control failure.

Built for long-term reliability in the field, the Apollo 10-600 Series utilizes a specialized silicone seat and an EPDM diaphragm to isolate the spring chamber from the process media, preventing scale buildup and ensuring consistent pop-off performance. This hot water relief valve is rated for temperatures up to 250°F. For optimal service life, maintain a 10 PSI or 25% margin between system operating pressure and the 60 PSI set point to prevent simmer and seat leakage. This NPT pressure relief valve is a standard-spec component for technicians requiring National Board certified protection for high-output hydronic equipment.

• High BTU Rating: Capacity of 2,265,000 BTU/hr ensures compliance for large commercial boiler installations.
• Corrosion Resistant: Heavy-duty bronze casting and stainless steel spring provide durability in harsh water conditions.
• Diaphragm Isolation: Protects internal components from mineral deposits and contaminants, extending the functional lifespan.
• Certified Safety: ASME Section IV and National Board (NB) certified for code-compliant high-capacity pressure relief.
• Standard Fitting: 1" Female NPT connections allow for straightforward integration into existing piping manifolds.

• Can this valve be used for steam applications? No, this model is specifically designed and certified for hot water heating systems; using it for steam will void the safety certification and may result in system failure.
• Is the discharge outlet expandable? This specific model features a 1-inch outlet, which must remain unrestricted and piped to a safe drainage point as per local plumbing codes.
• Can I manually test the valve? Yes, the integrated steel lift lever allows for periodic manual testing to ensure the disc and seat are not fouled.

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.