Conbraco 10-617-09 Valve

The Conbraco 10-617-09 Valve is a high-capacity hot water pressure relief valve designed for demanding hydronic heating systems and large-scale boiler protection. As a veteran-grade ASME Section IV certified safety device, this Apollo 10-600 series valve features a 1-1/2" Female NPT inlet and an expanded 2" Female NPT outlet to ensure maximum discharge efficiency during overpressure events. Built with a rugged ASTM B584 bronze body and a corrosion-resistant plated alloy steel spring, it is factory set at 45 PSI with a massive 4,974,000 BTU capacity. The diaphragm-isolated spring chamber prevents process water from contacting critical mechanical components, while the silicone seat ensures a tight seal and reliable 250°F temperature rating. For contractors installing commercial boiler safety valves, this National Board certified unit offers the high BTU rating necessary for superior equipment protection in high-output applications.

• Maximum Discharge Flow: Features an expanded 2" outlet to handle high-volume steam and water discharge without backpressure interference.
• Enhanced Component Longevity: The fabric-reinforced molded diaphragm keeps the spring dry, preventing mineral buildup and corrosion.
• Certified Safety: Fully ASME Section IV and National Board capacity certified, meeting strict code requirements for hot water heating boilers.
• Superior Sealing: Equipped with a soft silicone seat for high-temperature resilience and leak-resistant performance.
• Durable Construction: Heavy-duty bronze casting and an elevated seat design facilitate proper drainage away from the sealing area.

What is the maximum operating temperature for this relief valve?
This valve is rated for a maximum temperature of 250°F (121°C), making it suitable for standard and high-temperature hydronic heating loops.

Can the 10-617-09 be installed in a horizontal orientation?
No. To ensure proper operation and drainage, this pressure relief valve must be installed in a vertical, upright position directly into the top of the boiler or pressure vessel.

How do I determine if 45 PSI is the correct set pressure for my system?
Always consult the boiler manufacturer’s nameplate data. The relief valve set pressure must not exceed the maximum allowable working pressure (MAWP) of the vessel it is protecting.

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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.