Bellow Seal Valves

It has been proven through various studies about process plant emission that 75% of leakages are occurring through valves in pipelines. The leakages cause,

  • Environmental pollution
  • Production loss
  • Process problems
  • Energy loss

In line with present emphasis on prevention of environmental pollution and energy saving, it is necessary to plug these leakages. Irrespective of proper selection, installation and periodic and preventive cares on conventional valves, leakages cannot be totally eliminated. Though performance seems to be satisfactory initially, they are bound to leak through gland after some operations. Selection of Bellow Sealed Valves is the only solution for this problem.

Therefore, use of bellow seal valves is on the increase.  Bellow Seal Valves because they Aid, help and complement :

  • Stringent fugitive emission Laws
  • Environment Protection Laws
  • Air Purification or Clean Air Act.
  • Greenhouse Effect Prevention Bill
  • Energy conservation Law

 Bellow Seal Valve in Gate / Globe / Angle valves versions. They incorporate a Metallic SS bellows which is flexible welded to the shaft at the lower end and to the Body-Bonnet Flange at the other thus effectively shutting off any leak/emission to the atmosphere.

The Hydra Brand Bellows incorporated in UKL valves are imported from Germany, manufactured as per International Standards, ensuring a consistent and reliable  performance, long life and uncompromising Quality.

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Operating Animation
Valves, owing to their conventional design are prone to leak from gland or stuffing box. To avoid leaks from this area, the valves (such as gate valves, globe valves, etc) are incorporated with bellows flexible welded on the stem from inside. This type of construction is called bellow seal valves.
Following are the harmful effects of leakages:
1) Environmental pollution.
2) Production loss.
3) Process problems.
4) Energy loss.
1) Gate valve.
2) Globe valve.
3) Needle valve.
Forged Carbon steel – A105 – 15 to 40 NB – Gate and globe valve.
Cast Carbon steel – ASTM A216 Gr.WCB–15 NB to 400 NB – Gate and globe valve.
Hazardous & toxic media;
1) Liquid chlorine.
2) Phosgene gas.
3) Cyanide gas.
4) Hot thermic fluid.
5) Superheated steam.
6) Butadiene.
Considering the severe services and expected extended service life, the MOC of bellows is selected as SS316Ti and SS 321.
• Stringent fugitive emission Laws.
• Environment Protection Laws.
• Air Purification or Clean Air Act.
• Greenhouse Effect Prevention Bill.
• Energy conservation Law.
And many more…