RE: 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=krZ3bcG-jooy_DpMou4QFucdaeHnATViouVknrFi33GF16V4sB150accIyrVhpPAvyNDJLyFNHldli1st87RIoUZVrVc">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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Received on Tue Oct 29 09:05:00 2002