pipingdesign: RE: Cone Valve Dam Outlet

From: <Steve>
Date: Mon May 13 2002 - 02:16:00 EDT

Hi Geoff

got it thanks. Have been wondering about using mining hose for expansion. Its cheapish and I will not require bends. Any thoughts?

Cheers

Steve McKenzie

-----Original Message-----
From: Geoff Stone DD&D Australia [mailto:blenrayaust@yahoo.co.uk] Sent: Monday, May 13, 2002 6:01 PM
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] Cone Valve Dam Outlet

Steve

I promised you picture of a double bellows unit in a thermoplastic application.
I would have preferred a longer leg length but it does take up the thermal expansion in a long run of ABS.

Geoff
--- Steve McKenzie <Mechproj@xtra.co.nz> wrote:

<tt>
Geoff 
for a start, try Henry Pratt www.henrypratt.com they make the type of thing you are looking for. Maybe McNally Pittsburgh 
I would also try ITT because I heard a rumour they bought Allsi Chalmers cone valve designs. 
 
Cheers 
 
Steve McKenzie 
 
 
----- Original Message ----- 
From: "Geoff Stone DD&D Australia"
<blenrayaust@yahoo.co.uk> 

To: "paul bowers" <pipingdesign@yahoogroups.com> Sent: Wednesday, April 24, 2002 10:42 AM Subject: [PipingDesign] Cone Valve Dam Outlet 
 
> Does anyone in this forum know of a manufacturer of cone valves used
as 
> pressure let down valves below a dam. The duty is 400-1010 L/s with 
upstream 
> head of 60m . The head loss is modelled to be 25-40 m respectively.
Valve 
> required is to be electrically operated for flow control purposes. 
> 
> ===== 
> Geoffrey D Stone 
> Design Detail and Development 
> We specialise in pipe network and waterhammer analysis, pipe stress 
analysis, buried pipelines and the design of thermoplastic pipe systems. 
> Local tel 0402 35 2313 fax 02 8850 2313 
> Overseas tel 61 2 8850 2313 fax 61 2 8850 2313 
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Received on Mon May 13 02:16:00 2002

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