Re: Piping problem

Or just open any valve that will let air in. At the end of the system. ----- Original Message -----
From: "Jim Hubbard" <jhubbard@enercon.com> To: <PipingDesign@yahoogroups.com> Sent: Tuesday, October 29, 2002 7:05 AM
Subject: RE: [PipingDesign] Piping problem

> use a vacuum relief valve
>
> > -----Original Message-----
> > From: Wilkonet [mailto:wilkonet@yahoo.com]
> > Sent: Monday, October 28, 2002 11:50 PM
> > To: <a href="/group/PipingDesign/post?postID=GkO19_-rsFyVQTRLBzbV_j7Tn5Ark4le-Ec69X8RQ5hIaemtWNzCyXTN5w_nyvbaNjYU3avkJhKixKZD8uhIdC5w">PipingDesign@yahoogroups.com</a>
> > Subject: [PipingDesign] Piping problem
> >
> >
> > Hi Everyone,
> >
> > I've recently started my first main job as a trainee mechanical
> > engineer. One of the first problems ive came across is to modify a
> > piping system for supply water to a power plant. The material is
> > hdpe, 450mm dia, 7400m long. The is currently insufficient flow so a
> > modification is needed. My modification means that the change in
> > elevation from pump to dam is now -8m instead of previously 8m. (the
> > pipe would be re ruited)This in theory would give suffiecent flow.
> > However I have been warned that if the pump is turned off this could
> > cause a vaccuum to be formed and the pipeline to be crushed.
> >
> > I have been searching through the net to try and find some
> > information on designing pipe systems but have failed to find
> > anything to give me information on a system which pumps 'down hill'.
> >
> > It would be great if anybody could give me some advice or any
> > information which would halp me in my problem.
> >
> > Regards,
> >
> > David Wilkinson
> >
> >
> >
> > Texas Flange - a good source for information on industrial
> > flanges, all they ask is for referrals for designs they help with.
> > 877-610-8924.
> > www.texasflange.com
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> >
> >
>
>
>
> Texas Flange - a good source for information on industrial flanges, all
they ask is for referrals for designs they help with.
> 877-610-8924.
> www.texasflange.com
> =====================================================
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Received on Tue Oct 29 11:08:00 2002