"Jake" Nospam@invalid wrote in message
...
On Thu, 10 Mar 2011 15:39:12 -0000, "Graham Harrison"
wrote:

I've bought myself a water butt pump to move water between storage points.
The hosepipe I have is from a Hozelock Compact Enclosed Reel and it's a
real
struggle to fit it to the pump outlet. I had to remove the O ring from
the
pump to get it to go. In the pump kit there is a piece of piping which
seems to be bigger (larger circumference) than the pipe I have (it runs
from
the immersed pump up to the fitment I'm trying to attach to). I've
Googled
around trying to find out what pipe circumferences (or should it be
diameter
or radius?) exist but I'm not being successful. I'm quite happy to buy a
new piece of hose, I just need to know what to look for. Can anybody
help?

Generally, hosepipes are sold in 13mm or 19mm internal diameter sizes
though I think Hoselock sell some with an internal diameter of 12mm.
That 1mm could make all the difference with a tight fit. If you're
connecting two things together then the size of the smallest would
generally guide you - if hose is too big it leaks but you can often
stretch something too small to fit something bigger. Try soaking the
end of the pipe in some hot (but not boiling) water for a while and
you may soften it enough to stretch over the larger fitting. This
tends to work better with cheaper hose as the better quality stuff has
a multi layer coating which resists the heat. Otherwise you could try
Vaseline.

The only trouble with using Vaseline is the fact that if it is used for
'easy on', Vaseline stays and when you don't want it, it's a case of 'easy
off' and a connection will be blown apart when you don't want it. "Harder to
get on" means "Harder to get off"

Any Electronics Engineers who have used Hellerman Oil will appreciate this
comment ;-)

Mike


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