Conbraco Industries 10-605-20 Relief Valve

The Conbraco Industries 10-605-20 is a high-capacity boiler pressure relief valve engineered specifically for technical protection of hot water heating systems and high-output residential or commercial boilers. Performance-rated to manage a significant 3,500,000 BTU capacity at a factory-set pressure of 100 PSI, this valve ensures ASME Section IV certification compliance for critical safety applications. The internal geometry features an elevated seat designed to facilitate immediate water drainage away from the seating area, preventing sediment buildup that commonly leads to valve seizing in hydronic environments.

Constructed with a heavy-duty ASTM B584 bronze body and a corrosion-resistant alloy steel spring, the unit utilizes a 1" female NPT inlet and a 1" female NPT outlet for standard contractor-grade installation. The integration of a silicone seat and a fabric-reinforced molded diaphragm effectively isolates the spring chamber from water contact at all times, maintaining consistent set-point integrity. As a veteran-grade hot water relief valve, it is rated for operational temperatures up to 250°F, providing the mechanical reliability required by technicians interfacing with high-demand heating equipment.

• ASME Section IV HV Rating: Certified to discharge 90% of actual capacity at only 10% overpressure, ensuring reliable system safety.
• Extremely High BTU Capacity: Rated for 3,500,000 BTU, making it suitable for large-scale hydronic heating boilers.
• Enhanced Durability: Features a silicone seat and diaphragm-isolated spring cage to resist sticking and environmental degradation.
• Technical Precision: Standardized 1 inch NPT threaded connections support seamless replacement in existing pipe schedules.
• Corrosion Resistance: Bronze and plated steel components are selected specifically for longevity in aggressive water conditions.

What is the maximum operating temperature for this relief valve?
The 10-605-20 is designed to operate safely in hot water systems with temperatures reaching up to 250°F (121°C).

Can this valve be field-adjusted to a different PSI?
No, this specific model is factory-set and sealed at 100 PSI to maintain its ASME safety certification and should not be tampered with in the field.

Is this valve suitable for steam boiler applications?
This model is an ASME Section IV valve rated for water service only; verify your local codes and boiler plate requirements before installation on steam 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.