NAJING 3/4" FNPT Automatic Pressure Relief Valve 30 PSI for Hot Water Boiler Systems, Lead-Free Brass Safety Valve, Hydronic Heating, Up to 510,000 BTU

["Wide Compatibility for Boiler Systems: Designed for hot water boilers and hydronic heating systems, compatible with residential and commercial applications. Fits systems requiring 3/4\" FNPT female inlet and outlet connections, ensuring seamless integration with standard piping setups.","Standard 30 PSI Pressure Rating: Factory preset to 30 PSI, ideal for most boiler safety requirements. Helps prevent overpressure conditions in heating systems, protecting equipment and ensuring safe operation. Commonly used in systems up to approx. 500,000+ BTU capacity.","Durable Lead-Free Brass Construction: Made of high-quality lead-free brass for corrosion resistance, long service life, and compliance with modern safety standards. Stainless steel spring and precision sealing components ensure reliable performance under high temperature conditions.","Automatic Pressure Relief Function: Automatically opens when system pressure exceeds the preset level and reseats after pressure drops, preventing damage caused by excessive pressure buildup. Non-stick seat design minimizes leakage and ensures consistent sealing performance.","Easy Installation & Maintenance: 3/4\" FNPT threaded connections allow quick installation with standard tools. Compact design fits most boiler layouts."]