Bellow Seal Globe Valves

What is a bellow seal globe valve?

Bellow seal globe valve, also known as bellows globe valve, forms a metal barrier between fluid medium and atmosphere through automatic roll welding to ensure the design of zero leakage of valve stem. Compared with the traditional stop valve, it has the following advantages.


Structure of bellows sealed globe valve

  • 1. Double sealing design (bellows + packing) if the bellows fails, the valve stem packing will also be avoided.
  • 2. Reasonable structure, reliable sealing, excellent performance and beautiful appearance.
  • 3. No fluid loss, reduce energy loss and improve plant equipment safety.
  • 4. The sealing surface is overlaid with Co based cemented carbide, with good wear resistance, corrosion resistance, friction resistance and long service life, so as to reduce the number of maintenance and reduce the operating cost.
  • 5. The rugged bellows sealing design ensures zero leakage of the valve rod and provides conditions without maintenance.
  • 6. The stop valve stem is subject to quenching and tempering and surface nitriding treatment, with good corrosion and friction resistance;
  • 7. The valve rod lifting position indication is more intuitive.

Comparison between bellows globe valve and ordinary stop valve

  • 1. Double sealing design (bellows + packing) if the bellows fails, the valve stem packing will also avoid leakage and comply with international sealing standards.
  • 2. No fluid loss, reduce energy loss and improve plant equipment safety.
  • 3. Long service life, reduce maintenance times and reduce operating costs.
  • 4. The rugged bellows seal design ensures zero leakage of the valve stem and provides maintenance free conditions.
  • 5. PTFE soft sealing material is used for gas medium valve seat to improve the sealing performance of the valve.
  • 6. The valve seat with high temperature resistance ≤ 425 ℃ adopts conical hard seal. Achieve air tightness and zero leakage.

With the rising labor cost, more and more enterprises hope to reduce the labor force. With such bellows globe valve, workers can switch more easily. Products with longer service life and better sealing performance have reason to believe that its prospect will be wider and wider.

Advantages of bellows globe valve

  • 1. Bellows stop valve has long service life, reduces maintenance times and reduces operating costs. The rugged bellows seal design ensures zero leakage of the valve stem and provides maintenance free conditions.
  • 2. The valve has small opening and closing torque, reduces labor intensity, and can drive any form of driving device for remote control.
  • 3. Beautiful appearance, the valve channel has a smooth streamline and reduces the flow resistance coefficient of the valve. It is a high-quality energy-saving product.
  • 4. The outer seal of the valve adopts bellows seal and graphite and stainless steel gasket seal, which is reliable and can be used for a long time without replacing the sealing filler. In industrial use, the leakage caused by the stop valve: high temperature, highly toxic, flammable and explosive, radioactive media, etc., not only pollutes the environment, but also often causes significant personal and property losses. This kind of valve should be more safe and stable, and foreign advanced standards should be strictly adopted in design and manufacturing.

China bellow seal globe valve manufacturer www.sfutube.com supplies bellow seal globe valve for industrial use, in kinds of materials such as carbon steel, stainless steel, alloy steel, etc.

List of Valves

A351 CF8M Double Heating Jacketed Plug Valve DN500 X DN450 120LBS
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CF8M-Double-Heating-Jacketed-Plug-Valve-DN500-DN450-120LBS

China Valve Manufacturer www.sfutube.com offers A351 CF8M Double Heating Jacketed Plug Valve, DN500 X DN450, 120LBS.