pipingdesign: RE: Cone Valve Dam Outlet

From: <Steve>
Date: Mon May 13 2002 - 07:08:00 EDT

Geoff

have you had any luck with Pratt et al? On thursday I have agreed , in a moment of weakness, to design and spec the hydraulics (oil) for a sluice gate at a hydro station (one of my little specialities) probably in your country. I will check out the current state of play with letdown valves. Am quite keen to design one, with your help, if vendor prices are silly, as they often are.Keep in touch.

Cheers

Steve

-----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 
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Received on Mon May 13 07:08:00 2002

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