Conbraco Industries 10-418-10 Relief Valve

The Conbraco Industries 10-418-10 is a high-capacity ASME Section IV hot water relief valve engineered for protection in commercial and residential hydronic heating systems. Featuring a 3/4" FNPT inlet and a 3/4" FNPT outlet, this brass safety valve is factory set at 50 PSI with a discharge capacity of 697,000 BTU/hr. Designed for durability and reliable overpressure protection, it manages service temperatures up to 250°F. The 10-400 series utilizes a silicone seat and a stainless steel spring to ensure positive shut-off and consistent set-pressure performance. This HVAC pressure safety valve is essential for maintaining boiler system integrity and meeting strict mechanical code requirements. Its corrosion-resistant brass body and high-flow design make it a standard choice for contractors looking for Apollo pressure relief valves that provide precise thermal expansion protection in closed-loop heating applications.

• ASME Section IV Certified: Specifically rated for hot water heating boilers and hydronic systems to ensure code compliance.
• High Discharge Capacity: Rated for 697,000 BTU/hr, offering robust overpressure relief for larger BTU inputs.
• Durable Construction: Built with a heavy-duty brass body and stainless steel springs to withstand high-temperature cycling.
• Precision Seating: Features a resilient silicone seat for tight shut-off after lift, reducing nuisance dripping.
• Standard NPT Connections: 3/4" female threaded connections allow for straightforward integration into existing boiler trim.

What is the BTU rating for the Conbraco 10-418-10 at 50 PSI?
This specific model is certified for a discharge capacity of 697,000 BTU/hr when operating at its 50 PSI set point.

Can this relief valve be used on steam boiler applications?
No, the 10-400 series is an ASME Section IV valve specifically designed for hot water heating service; steam applications require an ASME Section I or VIII rated valve.

Is the set pressure adjustable on the 10-418-10?
No, these valves are factory set and sealed at 50 PSI to maintain safety certifications. Field tampering with the spring tension is not recommended and voids technical compliance.

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.