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Jonathan,

You could get lucky, someone on the list might know who originally made 
it, maybe even the original builder will reply. But you may be able to 
open up the valve (it looks like it was designed to be easily opened.) 
and see what is supposed to be in there. It could be something from off 
the shelf, a custom made part, or just a flap of rubber.

It occurs to me that the hand pump shown in your photos must have 
originally came with a set of it's own one-way valves. It is very 
possible that pump body was taken apart and its original valves were 
mounted so a visitor can see how they worked. If I had to build 
something like this, that's the first thing I would try to do. If that's 
the case you can check the pump manufacturer for replacement part.

Let us know how you make out.

Joe R
www.TheExhibitGuys.com




Jonathan Brooks wrote:
> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related institutions.
> *****************************************************************************
> 
> We recently acquired a pre-owned exhibit about the heart from a generous
> museum and need to replace some parts.  We are having trouble locating some
> one way valves.  It looks like they were probably custom made for viewing
> the flow, but I thought I would see if anyone knew where we could get
> something like this.  The rubber inside the valve has disintegrated, so we
> could either just try to replace the rubber or  the whole component.
> Pictures are at the link below:
>  
> http://picasaweb.google.com/ImaginationStationNC/BodyTechExhibit?feat=direct
> link
> Thanks!
> Jonathan Brooks
> Executive Director 
> Imagination Station Science Museum
> PO Box 2127
> 224 Nash St. SW
> Wilson, NC   27894-2127
> (252) 291-5113 ext. 223
> (252) 291-2968 Fax
>  <mailto:[log in to unmask]> [log in to unmask]
>  <http://www.imaginescience.org/> www.imaginescience.org
>  <http://www.imaginationstationnc.blogspot.com/>
> http://www.ImaginationStationNC.blogspot.com
> 
> 
>  
> 
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.

Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.

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