Try e bay

http://cgi.ebay.com/ws/eBayISAPI.dll...8516 067&rd=1

they have them there all the time, I know nothing about them.


"s9man3" > wrote in message
...
> Hi,
>
> I would like to be able to bottle fermented beverages in screw cap soda
> bottles (reusing them after I drink the soda), and I'm looking for or will
> try to invent a screw cap with a pressure release valve. If such a thing
> exists I'd be interested in hearing about it. Otherwise I am thinking
about
> something along the lines of inserting a false bottom in a bottle cap and
> putting a spring behind it so that when the cap is screwed closed, the
> spring will keep air out but if the pressure of the carbonation gets high
> enough, the pressure will push back the false bottom compressing the
spring
> and allowing gas to escape before the bottle bursts.
>
> Does anyone know if something like this exists or have any ideas on how to
> make one etc.
>
> (I have a couple of fizz keepers (a piston type and a bulb type) does
anyone
> know if these will release excess pressure?)
>
>
> Thanks
>
>
>
>
>
>