Conbraco Industries 10-418-15 Relief Valve

The Conbraco Industries 10-418-15 relief valve is a precision-engineered ASME Section IV hot water pressure relief valve designed specifically for high-capacity heating systems. Featuring a 3/4 inch FNPT inlet and outlet, this valve is factory set to 75 PSI to ensure reliable system safety and over-pressure protection. With a high flow capacity of 972,000 BTU/hr and a maximum temperature rating of 250°F, this brass relief valve is built to withstand the rigors of commercial and residential boiler applications. The Apollo 10-400 series design utilizes a high-capacity "soft seat" to ensure positive shut-off after over-pressure events, reducing the risk of persistent seat leakage. Contractors typically utilize this model for boiler pressure regulation where an ASME-certified safety device is required to meet local mechanical codes. The durable bronze body and corrosion-resistant hardware provide long-term reliability in demanding hydronic environments without the performance degradation seen in lower-grade components.

Key Benefits for Hydronic Systems:

• High BTU Rating: Rated for up to 972,000 BTU capacity, making it suitable for larger boiler configurations.
• ASME Section IV Certified: Meets strict ASME safety relief valve standards for hot water heating boilers.
• Durable Brass Construction: High-quality brass hot water pressure relief valve body resists corrosion and mineral buildup.
• Standard Threading: Dual 3/4" female NPT connections allow for straightforward field installation and replacement.
• Thermal Stability: Engineered to maintain seal integrity at temperatures reaching the 250 degree F maximum limit.

Frequently Asked Questions:

What is the difference between a 75 PSI relief valve and a standard 30 PSI boiler valve?
The Conbraco 10-418-15 is specifically set at 75 PSI for systems that operate at higher static pressures or in multi-story buildings where a standard 30 PSI valve would cause nuisance tripping. Always verify your system's maximum allowable working pressure (MAWP) before installation.

Can this valve be used for potable water heaters?
No, this is an ASME Section IV valve designed for hot water heating boilers (space heating). For potable water heater applications, you must use a T&P valve certified under ASME Section XL or ANSI Z21.22.

How do I ensure this valve meets local building codes?
The Conbraco 10-418-15 carries the 'HV' symbol and is National Board capacity certified. These markings confirm it meets the boiler safety equipment requirements found in most North American mechanical codes for high-pressure hydronic systems.

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.