Conbraco 10-417-07 3/4" MNPT x 3/4" FNPT 40 PSI Hot Water Safety Relief Valve

The Conbraco 10-417-07 is an ASME Section IV capacity-certified bronze safety relief valve designed to protect hot water heating boilers, hydronic systems, and similar equipment from dangerous overpressure conditions. Factory set at 40 PSI, this valve features a 3/4" Male NPT inlet and a 3/4" Female NPT outlet for straightforward installation into standard piping.

Key Features:

• Set Pressure: 40 PSI (2.76 bar)
• BTU Capacity: 587,000 BTU/hr
• Maximum Temperature: 250°F (121°C)
• Inlet: 3/4" Male NPT (MNPT)
• Outlet: 3/4" Female NPT (FNPT)
• Body Material: ASTM B584 bronze — corrosion resistant
• Spring Material: Stainless steel
• Seat Material: Silicone
• Certification: ASME Section IV certified capacity
• Origin: Made in the USA

Part of Conbraco's RVW40 series (also marketed under the Apollo Valves brand), this relief valve is engineered for corrosion-resistant, long-lasting service in residential and light commercial hot water heating applications. The adjustable set range for this series spans 20–80 PSI at up to 250°F, and the durable bronze construction ensures reliable performance over years of service.