We are leading Bellow Sealed Globe Valve manufacturer in Mumbai, India. A Bellow is contained within the valve, and the lower end of the stainless-steel / nickel alloy Bellow is welded to the stem to prevent the stem from being eroded by system fluid. The other end is inserted between the valve's body and cover to form a permanent seal. https://www.freture.com/bellow-seal-valves-manufacturers/bellow-seal-globe-valves/