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The Nabic 542 safety valve is an exceptionally versatile product. It is suitable for use on hot water, steam, or air systems. Primarily designed to protect hot water boilers, its broad applicability makes it a perfect general-purpose safety valve. The valve features a resilient PTFE seating design, ensuring a high degree of seat tightness. Sizes DN40 and larger include a drain plug for convenience. Its easy inspection and cleaning further enhance its functionality. Ideal for various applications, this safety valve guarantees reliability and performance.. Nabic 1 inch 542 Safety Valve - 3.5 Bar Brass NAB54202535