I use a mattress as well with the same opening you mention.
Make an 1" copper tube adaptor to your hose and slip it in.
It will not slide out under pressure unless you pull it out.
Put a bit of lube on it to make it slide in. Also smooth copper tube end
with fine emery cloth.
Udo



How do you connect to the air fittings with a water bed kit?
My air mattresses all have a 1" diameter plastic opening
without threads for rapid low pressure inflation and
deflation (same as on my Camel-Back water bottle), and a
smaller 1/4" or less air tube that you can blow into to top
it off. The water bed fittings all seem to be threaded. Is
yours different, or is there some way to connect to the
large unthreaded air fitting?
Todd Pattist - "WH" Ventus C
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