elsewhere on the web,
____________________________________________________________________________________________
Hello Rahul,
I have used a lot of butterfly valves in gas processing application at
a reasonable high pressure level of approx. 30bar(g) and differntial
pressures of 20 until 25 bar.
The medium was hydrogen, syn gases, different feed gasses. These
butterfly's were used as block valves (manual and automatic) and in
high cycle service (cycling each 2 min).
The most important advantage is the smaller build-in dimensions and
the lower weight.
As you should select your ball valve, also for butterfly valves it is
extremly important to adapt the material characteristics to the
applicable operating parameters. But after more then 10 years of
experiences in use in this kind of applications, butterfly valves are
more and more used with very good results (also for leak tightness)
Regards,
Gino De Landtsheer
By Gino De Landtsheer Piping expert @ Borealis
posted 9 days ago | Delete
_______________________________________________________________________________________________
Rahul,
I have seen butterfly valves in use in the natural gas industry as
block valves on large distribution systems. When sizing control valves
with high efficiencies in design cv, noise and vibration need to be
considered.
Regards,
Brian Taylor
By Brian Taylor Mechanical or Industrial Engineering Professional
posted 2 days ago | Delete
______________________________________________________________________________________________
On Aug 14, 5:05 pm, nandakumar pandit <pandit...@gmail.com> wrote:
> request you to give pressure and temperature and expected no. of cycles. we
> have used butterfly valves at 60 degree C and 3.5 kg/cm2 pressure without
> adverse effect for on/off service.
> the valves were cycling every 15 min.
>
> nspandit
>
>
>
> On Thu, Aug 13, 2009 at 5:49 PM, <rahul.pi...@akersolutions.com> wrote:
> > Hello all,
>
> > My question is not exactly related to material & welding , but it relates
> > to Valve application. I would very much appreciate your views.
>
> > I like to ask you all, does anyone has a experience of using Butterfly
> > valve, instead of Ball valve , in Gas processing / storage plant ?
>
> > I am studying possibility of using Triple eccentric butterfly valve in
> > high pressure gas plant , instead of Ball valves.
>
> > Of course , there is no need of Pigging for these lines and low Cv
> > values of butterfly valves are also in consideration.
>
> > Are there other design, operational, process parameters that limits the
> > use of butterfly valves for use in Natural Gas plants ?
>
> > Waiting for your guidance.
>
> > Kind regards
> > *Rahul Pisat*
>
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