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This versatile safety valve is an essential component for protecting hot water boilers, but its functionality extends to working with steam and air systems as well. The PTFE seating design ensures exceptional seat tightness, providing reliable sealing and preventing leaks. Its design allows for easy inspection and cleaning, making it low-maintenance and ideal for long-term use. Measuring inch, it fits a range of systems and offers robust protection against overpressure, ensuring safety and efficiency across various applications.. Nabic 3/4 inch 542 Safety Valve - 3.7 Bar Brass NAB54202037