Conbraco 18C-522-5-150 Valve

The Conbraco 18C-522-5-150 is a high-capacity commercial temperature and pressure relief valve designed for the rigorous demands of large-scale hot water heaters and storage tanks. Featuring a robust bronze body and 1-inch FNPT inlet and outlet connections, this valve is engineered to handle up to 3,625,000 BTU/hr within ASME Section IV heating systems. The 5-inch probe element utilizes a non-metallic coating to proactively isolate the thermal element from the water stream, significantly reducing the risk of galvanic and electromechanical corrosion that often compromises standard valves in harsh water conditions.

For contractors managing 150 PSI systems, this valve ensures reliable over-temperature and over-pressure protection with a maximum service rating of 210°F. The silicone seat and brass internal trim provide a positive seal and dependable reseating after discharge, preventing the "weeping" common in inferior T&P valves. Whether you are performing a new installation or a critical replacement, the Apollo 18C-522-5-150 meets ANSI Z21.22 and CSA requirements, providing a heavy-duty solution for commercial hydronic applications.

• Maximum Safety Rating: Rated at 3.625 million BTU/hr, specifically for high-capacity ASME Section IV commercial boilers and storage vessels.
• Corrosion Resistance: Includes a 5-inch coated thermal element to prevent electromechanical breakdown in varied water chemistry.
• Precision Performance: Factory set at 150 PSIG and 210°F to maintain strict system parameters in demanding HVACR environments.
• Contractor Grade Materials: Constructed with an ASTM B584 bronze body and stainless steel springs for long-term reliability in the field.

• What is the relief capacity for this specific model? This 1-inch valve is certified to manage a discharge capacity of 3.625 million BTU/hr, making it suitable for high-output industrial heaters.
• Can this be used on residential water heaters? While functionally a relief valve, it is specifically sized and rated for commercial hot water relief valve applications where high BTU throughput is expected.
• Does the 5-inch element require a specific orientation? The probe must be fully immersed in the top 6 inches of the tank water to ensure accurate thermal sensing and timely activation.

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.