Bellows stop valve is also called bellows sealed stop valve. Through automatic roll welding, a metal barrier is formed between the fluid medium and the atmosphere to ensure the zero leakage design of the valve stem.

The bellows structure is adopted inside the bellows stop valve. The lower end of the stainless steel bellows is welded on the valve stem to prevent the process fluid from eroding the valve stem. The other end is placed between the valve body and the bonnet to form a static seal. Double sealing design is adopted. If the bellows fails, the valve rod packing will also avoid leakage. The bellows welded to the valve rod will maintain stable operation performance and avoid the valve rod vibration caused by the valve plug vibration. It is most suitable for steam, flammable, explosive, heat transfer oil, high-purity, toxic and other medium pipelines.

Features of bellows stop valve:

1. Reasonable product structure, reliable sealing performance and beautiful appearance;

2. The sealing surface is overlaid with Co based hard alloy, with good wear resistance, corrosion resistance, friction resistance and long service life;

3. The valve stem is quenched and tempered and the surface is nitrided, which has good anti-corrosion and anti friction properties;

4. Double sealing of right angle German standard bellows stop valve, more reliable performance;

5. Valve rod lifting position indication, more intuitive;

6. The part material, flange and butt welding number and size can be reasonably selected according to the actual working conditions or user requirements to meet the needs of various projects.