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The Nabic 1 inch 542 Safety Valve - 3.0 B offers reliable protection for hot water boilers, steam, and air applications. Its versatile design makes it ideal for a range of uses, from heating systems to general-purpose safety requirements. The valve's resilient PTFE seating ensures a tight seal, reducing the risk of leaks and providing long-term performance. The valve is designed for easy inspection and cleaning, which simplifies maintenance. For sizes DN40 and above, a drain plug is included to enhance functionality and prevent excess pressure buildup. The Nabic 542 is built for durability and safety, ensuring dependable protection across various systems.. Nabic 1 inch 542 Safety Valve - 3.0 Ba Brass NAB54202530