John Williamson wrote:
Tim+ wrote:
I'd like to experiment with using a 2L coke bottle as a pressure
vessel but I haven't worked out how best to make a leakproof plumbed
connection to the bottle.

Does anyone know of an adaptor that would let me connect some
flexible pipe (10mm ID say) to the neck of the bottle?

The thread seems to be common for lots of bottles now but I haven't
found a suitable adaptor yet.

Something like this:-

http://www.amazon.co.uk/Bulkhead-Con.../dp/B005N02ML2

Through a hole in the cap, with a couple of rubber washers to seal it?

Nice idea but a bit too big I think. I'd prefer a readymolded device if
such a thing exists. A bit like this.
http://www.amazon.com/Soda-Carbonato.../dp/B003V5EY44

A bolt in tyre valve would fit but then I'd have to find a way of making a
water-tight seal to the tyre valve. Ideally I'd want something that I can
just push a tube onto and secure with a jubilee clip.

Tim