Conbraco 10-614-16 Relief Valve

The Conbraco 10-614-16 is a high-capacity hot water boiler relief valve engineered for critical overpressure protection in commercial and residential hydronic systems. Featuring a 3/4" FNPT inlet and an expanded 1" FNPT outlet, this ASME Section IV certified safety valve is factory-preset to 80 PSI, delivering a substantial steam-rated discharge capacity of 2,089,000 BTU/hr. The rugged ASTM B584 bronze body and corrosion-resistant alloy steel spring ensure long-term structural integrity, while the silicone seat provides a bubble-tight seal to prevent simmering and nuisance leakage. A fabric-reinforced molded diaphragm effectively isolates the spring chamber from the system media, protecting internal components from scale and debris. This Apollo 10-600 series valve is rated for temperatures up to 250°F, making it a reliable solution for maintaining hydronic system safety in high-output boilers and water supply systems where National Board certified capacity is a non-negotiable requirement for code compliance.

• Maximum Discharge Flow: The expanded 1" outlet reduces backpressure and facilitates rapid energy evacuation during overpressure events.
• Enhanced Sealing: High-grade silicone seating resists sticking and handles thermal cycling better than standard EPDM alternatives.
• Code Compliance: ASME Section IV and National Board (NB) certifications ensure the valve meets strict safety standards for heating boilers.
• Internal Protection: The isolated spring chamber prevents water contact with the spring, reducing the risk of mineral buildup and mechanical failure.
• Durable Construction: Heavy-duty bronze construction provides superior resistance to dezincification and harsh water conditions.

What is the difference between the 10-614-16 and standard 3/4" relief valves?
Unlike standard 3/4" x 3/4" valves, this model utilizes an expanded 1" outlet to maximize BTU discharge capacity. It is specifically designed for high-output systems that require 2,089,000 BTU/hr protection at an 80 PSI set point.

Can this valve be used for steam boiler applications?
No, the 10-614-16 is an ASME Section IV valve designed for hot water heating systems and hot water supply boilers. It should not be used on steam-generating boilers or compressed air systems.

Why is my relief valve dripping after the system reaches temperature?
Constant dripping usually indicates thermal expansion exceeding system limits or debris trapped on the silicone seat. If the system pressure is within 10% of the 80 PSI set pressure, the valve may "simmer," which is a normal mechanical response before full opening.

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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.