The bellow globe valve is particularly outstanding in terms of quality and life. It has a double seal to ensure zero leakage, and it is a safe and reliable standard for zero leakage of helium mass spectrometry. The number of bellows cycles can reach more than 10,000 cycles without damage, far exceeding the switch life of the ordinary shut-off valve packing seal several times.

In addition, the bellows valve can prevent external dust from the valve body, ensuring the cleanliness of the medium. For example, under the conditions of high-purity silicon powder, pure oxygen, food, vacuum, etc., the performance of the bellows shut-off valve is very outstanding.

Ordinary shut-off valve packing and valve stems will have dynamic friction during the switching process, and the filler will be worn out and fail. Especially in the case of high temperature and low temperature, the filler will expand and contract as temperature changes.

In summary, the advantages of bellows globe valves compared to conventional globe valves can be summarized as follows:

1. The bellows globe valve can meet the zero leakage standard of helium mass spectrometry detection, which is very safe and reliable.

2. The service life of the bellows cut-off valve is much higher than that of the ordinary globe valve. The packing of the ordinary globe valve is easy to be damaged and the replacement frequency is high.

3. Bellows Valve’s stem seal has a metal barrier that can be used in high-demand conditions such as oxygen, which requires absolute isolation inside and outside the valve.

4. The bellows valve has a double seal. When the bellows is intact, the filler is completely isolated from the medium, which protects the filler well and greatly prolongs the service life.

Xiamen Dervos is an API Certified globe valve manufacturing and trading company that specializes in the production of various kinds of valve. In addition to Knife gate valve, we also produce other industrial pipeline valves, such as ball valves, check valves, plug valves and butterfly valve.

To learn more about our industry-leading products, contact us today.