Leaks of hazardous media in control valves pose a permanent threat to people and the environment. Utmostbellows-sealed valves offer a comprehensive range of sealing characteristics. As a sealing element, the bellows is suitable for the occasion of strict control of leakage, such as the medium is toxic and harmful liquid or gas, and the bellows with elasticity and pressure resistance is welded to the valve stem at one end, and the other end is welded to the interface sealing ring under the upper bonnet. For safety reasons, the system is maintenance-free. We can choose to use a hose connection between the stem and the bellows, or we can use this structure for leak detection, or we can fill the bellows with inert gas between the stem and the stem.


The bellows seal valve is made for durability under harsh working conditions, and the standard form of the bellows is double-walled bellows, which can be used in the field for more than 100,000 times without leakage