Conbraco 17-402-04 Bronze Pressure Relief Valve 3/4" 150 PSI

The Conbraco 17-402-04 is a cast bronze pressure relief valve designed to protect hot water heating systems from excessive pressure buildup caused by thermal expansion. Part of the Apollo 17-400 Series, this valve features 3/4" MNPT inlet and 3/4" FNPT outlet connections with a 150 PSI set pressure and 934,000 BTU capacity rating.

Key Features:

• Cast bronze body construction for durability and corrosion resistance
• Silicone seat material for reliable sealing performance
• Stainless steel internal springs for extended service life
• Maximum operating temperature of 250°F
• ASME Section IV certified for hot water heating and supply boilers
• CSA certified to ANSI Z21.22 standards
• Conforms to HUD/FHA requirements

This pressure-only relief valve provides essential safety protection for hot water boilers, storage tanks, plumbing systems, and tankless water heaters by automatically releasing excess pressure during thermal expansion events. The uni-body design ensures consistent performance and reliability in residential and commercial applications.