The material of copper valve must have good plasticity, high elastic limit, tensile strength and fatigue strength, good welding performance, and stable elastic performance. In metal bellows copper valves, the metal bellows assembly provides an axially movable metal housing between the valve stem and the process fluid in the valve body to form a dynamic seal. The bellows bears the pressure, temperature and corrosion of the medium while bearing the compression and tension of the valve stem, ensuring that the copper valve achieves zero leakage during its life cycle. With the widespread application of bellows in the copper valve industry, the technical requirements for bellows are also increasing. Metal bellows for copper gate valves are constantly developing in the direction of high pressure resistance, high temperature resistance, corrosion resistance and long life.
