Description
The Conbraco 10-604-05 (also known as Apollo 10-604-05) is a high-capacity safety relief valve designed to protect hot water systems from overpressure. Engineered for hydronic heating applications, this ASME-certified valve ensures reliable and durable performance in residential and commercial boilers.
Key Features
- Set Pressure: Factory-preset to 30 psi, making it ideal for hot water heating systems.
- Connection Size: ¾″ FNPT inlet and outlet for easy integration with standard plumbing fittings.
- High Capacity: Rated for up to 827,000 BTU/hr, providing robust protection for powerful heating systems.
- Durable Construction: Made from corrosion-resistant bronze (ASTM B584) to ensure long service life.
- Soft Seat: Features a silicone seat that seals tightly and maintains integrity under pressure cycling.
- Diaphragm-Isolated Spring Chamber: Protects the valve spring from direct contact with water, reducing corrosion and extending life.
- High-Temperature Rating: Rated for up to 250 °F (121 °C) for safe operation in hot water systems.
- Certified Capacity: ASME Section IV certification ensures the valve meets rigorous performance standards.
- Compact Size: Built with a ¾″ footprint, making it suitable for tight installation spaces.






