Durable copper pressure switch for boiler systems, engineered to maintain pressure in steam boilers and water heating systems. The long lasting construction delivers reliable performance for demanding applications and is compatible with a range of industrial and commercial equipment. Versatile compatibility with steam coffee machines, milk frothers, and other boiler based devices. Features two thread sizes, 10 mm and 13 mm, to fit multiple machine types and broaden application coverage. Precision pressure regulation to prevent pressure related malfunctions. Provides accurate adjustments, supports voltages from 12V to 250V and handles up to 15A current for smooth and efficient operation in diverse settings. Easy installation with G1/4 and G1/8 external threads for straightforward setup without specialized tools. Helps users quickly integrate it into existing systems, and the yellow color offers visibility during installation and maintenance. Practical use scenarios 1) In a cafe or restaurant, stabilizing boiler pressure for steam espresso machines and milk frothers. 2) In commercial boilers or water heaters within industrial facilities to maintain safe, consistent operation. 3) In laboratories or commercial kitchens using boiler based equipment that requires reliable pressure control.