Re: Knife Gate Valves - Quick Delivery

I have now. They only go to 150psi.
Thanks
Steve
----- Original Message -----
From: "ava" <anupacharya@vsnl.net>
To: <PipingDesign@yahoogroups.com>
Sent: Friday, November 23, 2001 2:51 AM
Subject: Re: [PipingDesign] Knife Gate Valves - Quick Delivery

> did you try velan valves
>
>
>
> At 04:52 PM 11/22/01 +1300, you wrote:
> >Hi
> >
> >I am looking for a knife gate valve for a mining slurry application. I
> >would like it within 4 weeks.
> >The delivery point is in New Zealand, but air freight is not a problem.
> >
> >The size is 350NB, or 300NB would do if absolutely necessary.
> >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.
> >
> >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.
> >Clarkson valves are believed to be of suitable quality and probably L&M
> >valves also. Keystone fig955 valves only go to 16bar.
> >
> >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 "off the shelf" supplier
somewhere.
> >
> >Can anyone help source a good supplier?
> >
> >Cheers
> >
> >Steve McKenzie
> >
> >
> >[Non-text portions of this message have been removed]
> >
> >
> >
> >___________________________________________________
> >If you want only site update notifications, go here:
> >mailto:PipingDesignNews-subscribe@yahoogroups.com
> >_____________________
> >Piping Design Central
> >[ http://www.PipingDesign.com ]
> >________________________________________
> >We hope you find this newsletter useful.
> >If not, you can unsubscribe at:
> >PipingDesign-unsubscribe@yahoogroups.com
> >Post message: PipingDesign@yahoogroups.com
> >Subscribe: PipingDesign-subscribe@yahoogroups.com
> >
> >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
>
>
> ___________________________________________________
> If you want only site update notifications, go here:
> mailto:PipingDesignNews-subscribe@yahoogroups.com
> _____________________
> Piping Design Central
> [ http://www.PipingDesign.com ]
> ________________________________________
> We hope you find this newsletter useful.
> If not, you can unsubscribe at:
> PipingDesign-unsubscribe@yahoogroups.com
> Post message: PipingDesign@yahoogroups.com
> Subscribe: PipingDesign-subscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
Received on Thu Nov 22 16:40:00 2001