Conbraco 10-606-34 Valve

The Conbraco 10-606-34 (Apollo 10-600 Series) is a high-capacity ASME Section IV safety relief valve designed specifically for heavy-duty hot water heating boilers and high-output hydronic systems. Featuring a rugged ASTM B584 bronze body, this 1-1/4" NPT relief valve is factory-set at 150 PSI and delivers a massive 8,725,000 BTU/hr capacity. For contractors managing commercial HVAC installations, its diaphragm-isolated spring chamber provides a critical advantage by protecting working metal parts from corrosive system fluids, ensuring reliable seat alignment and overpressure protection. The 1-1/4" Female NPT inlet and outlet ports allow for high-throughput discharge, while the silicone seat and stainless steel spring maintain a tight seal under standard operating temperatures up to 250°F. This National Board certified valve is a standard-tier component for ensuring compliance and safety in large-scale residential and industrial boiler pressure relief applications.

Key Benefits

• Extreme BTU Capacity: Rated at 8,725,000 BTU/hr to handle the thermal expansion and safety requirements of high-output commercial boilers.
• Corrosion-Resistant Interior: Features a diaphragm that isolates the spring from the water, preventing mineral buildup and part fatigue.
• Certified Safety Standards: ASME Section IV capacity certified and National Board listed for guaranteed performance in regulated environments.
• Durable Construction: Built with a heavy-cast bronze body and a soft silicone seat for repetitive, leak-free operation after discharge.
• Simplified Installation: Standard 1-1/4" FNPT connections provide direct compatibility with existing commercial hydronic piping.

Common Questions

Is the 10-606-34 suitable for steam applications?
No, this specific model is designed and ASME Section IV certified for hot water heating service only. Using it in steam applications may result in improper discharge rates and safety hazards.

What is the maximum temperature rating for this valve?
The valve is engineered to operate effectively at temperatures up to 250°F (121°C), making it ideal for high-temperature hydronic loops.

Can the set pressure be adjusted in the field?
Tampering with the factory 150 PSI setting is not recommended and may void the ASME certification. For different pressure requirements, a specific factory-set valve should be sourced.

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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.