Re: [PipingDesign] Knife Gate Valves - Quick Delivery

From: <Steve>
Date: Thu Nov 22 2001 - 16:48:00 EST

Thanks Geoff
I have already tried Keystone.
Will try John, One Steel and Flotech
Am also trying Austex in Kal

Cheers

Steve
Am already tryin
----- Original Message -----
From: "geoff stone" <blenrayaust@yahoo.co.uk> To: <PipingDesign@yahoogroups.com>
Sent: Thursday, November 22, 2001 9:10 PM Subject: Re: [PipingDesign] Knife Gate Valves - Quick Delivery

> Try Tyco Water (Keystone) who are represented in NZ.
> Manufacture is in Australia. Also John Valves
> Australia, One Steel Australia Keith Crinnion, Flotech
> 61 2 9499 4888 tel Ron Rodrigues,
>
> --- Steve McKenzie <Mechproj@xtra.co.nz> wrote:
> <HR>
> <html><body>
> <tt>
> Hi<BR>
> <BR>
> I am looking for a knife gate valve for a mining
> slurry application. I would like it within 4
> weeks.<BR>
> The delivery point is in New Zealand, but air freight
> is not a problem.<BR>
> <BR>
> The size is 350NB, or 300NB would do if absolutely
> necessary.<BR>
> Pressure rating is 21bar. Operating pressure is
> normally around 17bar and the valve must be capable of
> opening against 21 bar differential pressure.
> Anticipated max flow is 420l/s. Natural rubber and
> stainless steel have proved suitable wetted materials
> for the slurry which is sulphide ore gold mine
> tailings D50 = 60 micron. An air actuator 5-10bar
> min/max pressure is suitable and it would be and
> advantage for this to be supplied with the valve. I
> prefer to use the actuator oil filled with separate
> air over oil accumulators to give smoother adjustable
> actuating speed. So actuator internals should be
> hydraulic oil compatible.<BR>
> <BR>
> The valve will be used for dumping the tails line if
> there is a failure or planned shutdown so the duty is
> occasional but severe.<BR>
> Clarkson valves are believed to be of suitable quality
> and probably L&amp;M valves also. Keystone fig955
> valves only go to 16bar.<BR>
> <BR>
> Local valve suppliers tell me that this valve would
> have to be manufactured which would take at least 6
> weeks (ex USA). I would have thought there must be a
> reasonably priced &quot;off the shelf&quot; supplier
> somewhere.<BR>
> <BR>
> Can anyone help source a good supplier?<BR>
> <BR>
> Cheers<BR>
> <BR>
> Steve McKenzie<BR>
> <BR>
> <BR>
> [Non-text portions of this message have been
> removed]<BR>
> <BR>
> </tt>
>
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Received on Thu Nov 22 16:48:00 2001

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