"Andy Dingley" wrote in message
...
On Wed, 15 Jun 2005 08:29:33 +0000 (UTC), "Maart"
wrote:

Hi, I need to buy a hosepipe that is 250m long. Is there somewhere that I
can buy one, perhaps straight from a factory or something?

Try a farmer's store - where they sell cow pruners, sheep openers and
the like. These are great fun to shop in - all manner of weirdness, and
the proces are often good too (3kg of copper sulphate for a tenner!)

However 250m is _very_ long. You may need significant water pressure and
you'll still get poor flow. Make sure the hose is big enough diameter.
If possible, use a shorter hose with couplers - when you can, just used
the short length alone.

There are a number of useful calculators on the web (e.g.
http://www1.agric.gov.ab.ca/$department/deptdocs.nsf/all/agdex787) that will
calculate pipe losses. The losses tend to increase non-linearly with flow
rate, so that head loss over 250 metres can be significant at anything over
a trickle in small hoses.

Andy