Conbraco 18C-511-5-150 Valve

The Conbraco 18C-511-5-150 is a high-capacity Temperature and Pressure Relief Valve designed for heavy-duty commercial and industrial water heaters. Engineered with a 3/4" Male NPT inlet and a 3/4" Female NPT outlet, this T&P relief valve is set to trigger at 150 PSI and 210°F. With a massive 1,912,000 BTU/hr capacity, it ensures reliable thermal expansion protection and vacuum relief in high-demand systems. The 5" probe length provides precise temperature sensing, while the bronze body construction and corrosion-resistant components meet rigorous ASME Section IV and ANSI Z21.22 standards. This Apollo water heater valve is a standard-tier replacement for maintaining safe storage tank pressures and prevents catastrophic vessel failure. Technicians favor this model for its consistent pressure relief performance in large-scale boiler and potable water applications where high-flow discharge is required.

Key Benefits

• High BTU Rating: Rated for systems up to 1,912,000 BTU/hr, making it suitable for large commercial boilers and storage tanks.
• Accurate Thermal Sensing: The 5-inch probe ensures deep immersion into the tank for precise water temperature monitoring.
• Durable Bronze Body: Constructed for longevity in harsh water conditions, reducing the risk of mineral buildup and sticking.
• Code Compliance: Meets ASME, NB, and CSA requirements, ensuring the installation passes inspections.
• Dual Protection: Provides both over-pressure and over-temperature safety in a single compact footprint.

Common Questions

What is the discharge capacity of the Conbraco 18C-511-5-150?
This valve is rated at 1,912,000 BTU/hr, which is sufficient for high-volume commercial water heaters requiring heavy-duty relief paths.

Can the 5-inch probe be shortened if it doesn't fit my tank?
No. Shortening or modifying the probe violates the ASME certification and will prevent the valve from sensing temperature accurately, creating a safety hazard.

Is this valve suitable for steam heating systems?
This specific model is designed for water heaters and hot water storage tanks. Always verify that your application aligns with the 210°F and 150 PSI set points.

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.