[Gasification] star valve sources/experience?

[gfwhell at aol.com]

 I'v used pinch valves on occasions for controlling solids. and a variety? of valve liners including? the higher temperature plastics such as Teflon are available.
GF


 


 

-----Original Message-----
From: Ken Calvert <renertech at xtra.co.nz>
To: Discussion of biomass pyrolysis and gasification <gasification at listserv.repp.org>
Sent: Sun, 16 Sep 2007 7:12 am
Subject: Re: [Gasification] star valve sources/experience?










Jim, the only reasonably priced star valves that I am aquainted with are 
those used in the grain industry for pneumatic
transfer of  goods.  They all  have rubber seals, which wouldn't take too 
kindly to
hot charcoal methinks.  Maybe you could replace the rubber seals with 
somethig better? The ones we used in the coffee industry were by Kongskilde 
in the Netherlands.  But any manufacturer of pneumatic grain equipment 
should have something. Ken C.
----- Original Message ----- 
From: "jim mason" <jimmason at whatiamupto.com>
To: "Discussion of biomass pyrolysis and gasification" 
<gasification at listserv.repp.org>
Sent: Sunday, September 16, 2007 10:48 PM
Subject: [Gasification] star valve sources/experience?


> what is the collected wisdom here on sources for star valves?
>
> granular fuel handling and ash/char handling often requires star
> valves to maintain air seal while moving solid material.  i have not
> been able to find common installations of these elsewhere for
> repurposing in gasification.  the ones i do find from general
> industrial supply sources are terribly expensive.
>
> there must be lots of these used in ag and food processing that are
> more resonable.
>
> anyone have leads or experience to offer?
>
> jim
>
>
> --------------------------------------------------------------------------------
> jim mason
> website: www.whatiamupto.com
> current project: mechabolic (http://www.mechabolic.org)
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