3/4" FNPT Female Inlet & Outlet – 30 PSI Automatic Pressure Relief Valve for Hot Water Boilers & Hydronic Heating Systems, Durable Lead-Free Brass, Up to 510,000 BTU

Additional Details from the Manufacturer

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More features

• Standard 3/4" FNPT Female Inlet & Outlet – Easy replacement for existing valves; compatible with most residential and light commercial boilers up to 510,000 BTU.
• Automatic 30 PSI Pressure Relief – Opens automatically to release excess pressure, protecting your hot water boiler and heating system from overpressure damage.
• Durable Lead-Free Brass Construction – Made from corrosion-resistant copper alloy for long-lasting, reliable performance in high-temperature systems.
• Mechanical & Maintenance-Free – Fully automatic operation requires no electricity or manual intervention; ensures zero-maintenance safety protection.
• Ideal for Hydronic Heating Systems – Suitable for radiators, radiant floors, and fan coil units; helps ensure safe operation and extends boiler system lifespan.