Conbraco 10-608-25 Valve

The Conbraco 10-608-25 Valve is a heavy-duty ASME Section IV high capacity pressure relief valve designed specifically for the protection of hot water heating boilers and large-scale hydronic systems. This 2-inch FNPT model is National Board capacity certified, featuring a robust bronze body construction (ASTM B584) and a silicone seat to ensure positive shut-off and thermal resistance up to 250°F. With a factory-set pressure of 125 PSI and a massive 16,571,000 BTU capacity, it effectively prevents over-pressurization caused by control failure or excessive heat input. The diaphragm-isolated spring chamber keeps the alloy steel spring protected from the flow media, preventing corrosion and scale buildup that can lead to valve sticking. This hot water safety relief valve is essential for contractors managing high-output commercial heating plants where maintaining boiler system safety and code compliance is non-negotiable.

Key Benefits

• High BTU Rating: Certified for 16,571,000 BTU/hr, making it suitable for high-output commercial boilers.
• Corrosion Resistance: Features an ASTM B584 bronze body and a plated alloy steel spring for long-term durability in harsh environments.
• Reliable Seating: The silicone seat provides excellent heat resistance and ensures a tight seal to prevent nuisance weeping.
• Advanced Design: Incorporates a fabric-reinforced molded diaphragm to isolate the spring from the water at all times.
• Industry Compliance: Fully meets ASME Section IV requirements and is registered in all Canadian provinces (CRN 0G8547.5C).

Common Questions

What is the maximum operating temperature for this valve?
This valve is rated for a maximum temperature of 250°F (121°C).

Can this valve be installed horizontally?
For proper performance and to meet most safety codes, the valve should be installed in a vertical position with the spindle upright to ensure the body remains self-draining.

How do I verify the capacity for my specific boiler?
The 16,571,000 BTU/hr rating is National Board certified at the 125 PSI set point; ensure your boiler's maximum heat input does not exceed this value to maintain code compliance.

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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.