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The Nabic 542 safety valve is highly versatile, suitable for hot water, steam, or air applications. Primarily designed to protect hot water boilers, it serves as a reliable general-purpose safety valve. Features include easy inspection and cleaning, and a drain plug on sizes DN40 and above. The resilient PTFE seating offers exceptional seat tightness. Ideal for various applications, it ensures safety and efficiency. Its compact and efficient design makes it a valuable component in any system. The Nabic 1 inch 542 Safety Valve operates at 3.3 Bar, ensuring optimal performance and safety.. Nabic 1 inch 542 Safety Valve - 3.3 Bar Brass NAB54202533