Globe valves are mainly filled with packing seals instead of bellows seals. The upper surface of bellows is welded together with the valve body, thus forming a closed space in which the liquid is located. The valve stem is inserted in the bellows. The bottom of the bellows is connected with the spool. The expansion of the bellows controls the opening of the spool. Therefore, it is impossible for leaky bellows to leak. Bellows seals are highly reliable and can be used in toxic media or gases. Such as chlorine gas. Prevent leakage.
The structural characteristics of bellows globe valve:
1. Dual sealing design (bellows + packing) If bellows fail, stem packing will also avoid leakage and conform to international sealing standards.
2, there is no fluid loss, reduce energy losses, improve plant safety.
3, long service life, reduce maintenance times and reduce operating costs.
4. Rugged bellows seal design ensures zero leakage of stem and provides no maintenance conditions.
5. Gas medium valve seat adopts PTFE soft sealing material to improve the sealing performance of the valve.
6, high temperature resistance; 425 degree valve seat adopts cone hard seal. Air tight performance zero leakage