Welding bellows stop valve principle: The interior of the welding bellows stop valve adopts a bellows structure, and the lower end of the stainless steel bellows is welded on the valve stem to prevent the process fluid from etching the valve stem. The other end of the welded bellows stop valve is placed between the valve body and the valve cover to form a static seal. Welding bellows stop valve is suitable for steam, flammable, explosive, thermal oil, high purity, toxic and other media pipe. The bellows valve has a dual seal design and the stem packing will avoid leakage if the bellows fail. The bellows are welded to the stem to maintain stable operating performance and avoid the stem vibration caused by the valve plug vibration.
Advantages of welded bellows globe valve: 1, the product structure is reasonable, reliable sealing. 2, sealing surface surfacing Co based cemented carbide, wear resistance, corrosion resistance, good friction performance, long service life. 3, the valve stem tempering and surface nitriding treatment, has good anti-corrosion and anti-friction performance. 4, parts material and flange, surfacing end size can be reasonably selected according to the actual working conditions or user requirements, to meet various engineering needs. 5, the spool can be made according to the need to cut off type and regulation type.

Nominal Diameter:
-DN15~DN600(mm)
Nominal Pressure:
-PN16~PN40
Working Temperature:
– -20℃~425℃
Material:
– Stianless Steel, WCB,Forged Steel

WJ61H German standard welded bellows globe valve implementation standard table