Conbraco 18C-522-5-125 Valve

The Conbraco 18C-522-5-125 is a professional-grade high-capacity T&P relief valve designed specifically for the protection of industrial and commercial hot water heaters and storage tanks. Part of the Apollo 18C-500 series, this valve features a robust bronze body and a 1-inch FNPT inlet and outlet for high-flow reliability. It is factory-set at 125 PSI with a maximum temperature threshold of 210°F. The 5-inch thermostat element is coated to prevent corrosion and buildup, ensuring accurate thermal sensing in harsh water conditions. With an ASME Section IV certified capacity of 3,070,000 BTU/hr, this commercial temperature and pressure relief valve provides the necessary discharge rates to protect large-scale boiler systems. The inclusion of a silicone seat disc ensures a tight seal after operation, reducing the risk of persistent weeping. For contractors, this 1-inch FNPT relief valve is a standard-spec solution for multi-family housing or commercial facilities requiring ANSI Z21.22 and CSA certification for safety compliance.

• High BTU Displacement: Rated for up to 3,070,000 BTU/hr, providing critical safety margin for high-output commercial boilers.
• Corrosion Resistance: Features a 5-inch coated element to resist scale and chemical degradation, extending the operational life of the sensing probe.
• Code Compliance: Built to meet ASME Section IV and CSA standards for legal and technical compliance in high-occupancy environments.
• Durable Seating: Utilizes a high-temp silicone seat disc that resists hardening and sticking, ensuring the valve reseals properly after testing or discharge.

• Can this valve be used for steam heating boilers? No, the 18C-522-5-125 is specifically designed for commercial hot water heaters and storage tanks; it is not for use on steam space heating systems.
• What is the significance of the 5-inch element? The 5-inch probe length ensures the sensing element is positioned deep enough into the tank or water stream to accurately detect temperature spikes before the water reaches a critical state.
• Can I install this valve in a horizontal position? No, these T&P valves must be installed in a vertical, upright position to function correctly and comply with manufacturer discharge requirements.

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.