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[APD] Re: Needle valves
At 08:40 8/13/2005, Dave W asked:
Question for Dave G
I am a resident of NT Aust. The only needle valves we can access here are
the Nupro variety from the local gas supply companies for about $135 Aust
dollars.
That is a tremendous amount of money. That's about 100USD, right?
I looked at your pictures and was wondering if there are any differences
between the gas connection systems (bottle to reg) in Australia compared to
the US. They look like they might be different.
I am not sure what this has to do with needle valves but I will do my best
to answer. My needle valves have 10/32 female threads. I sell them with
10/32 to 5/32" barb adapters, so that you can hook conventional or CO2
resistant air hose to them.
Bottle to regulator connections are a whole different kettle of fish. In
the USA CO2 uses the CGA320 connection. This is a level thread connection
sealed with a nylon washer compressed between the surface of the cylinder
shutoff valve exit pipe and a solid flange/pipe affair that leads into the
body of the regulator. When properly seated and tightened they do not leak.
I do not know about threads for cylinder shutoff valves in AU, you would
have to ask your Compressed Gas Association (CGA) folks.
--
Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com
http://www.wcf.com/apbook for Kasselmann's "Aquarium Plants" book SPECIAL
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