Toby wrote:
Then Some of these screwed directly into this supply pipe
http://www.easy-irrigation.co.uk/end...ack-p-280.html

Then from these drip heads, some smaller pipe to each plant
http://www.easy-irrigation.co.uk/sup...348-p-315.html

I have *lots* of this already from previous failures.

What were the previous failures?

Mostly failed 'drippers' going to either "little fountain" or "nothing
at all". An additional problem was that none of the pressure reducers
supplied with the systems lasted very long and our mains water
pressure is very high.


Or, if you have a bed full of plants, then you run a 13mm pupe down the
middle, and then screw somthing like this directly in
http://www.easy-irrigation.co.uk/gar...320-p-282.html

When I installed a system in my back garden, i used Gardena stuff
everywhere, the only other thing I used for the pipes were 25mm MDPE pipe
under the grass as my main supply, I installed a 12v valve at each lawn
sprinkler, or lower bed, so i can control each area of the lawn and each
bed. It's all fed from 8000L of rainwater storage :-)

My experience of Gardena (and other) irrigation systems aimed at the
'domestic' market is that they disintegrate or stop working by some
means or other within 12 months or so.
The drip heads in particular either stop dripping altogether or stick
open with too much flow. The chances of getting consistent watering
over a number of heads closely approaches zero. Supplying a "Cleaning
Needle" (as in the second link above) is almost an admission of
defeat. They don't seriously expect the user to crawl around under
the tomato plants poking at the drip feed do they?

I have had mine in for several years, and as I have kept the supply water
clean, I have not had blockages.

How did 'you' keep it clean, it's surely up to the water company! :-)


So if you keep the supply water clean, then there won't be anything to block
the drippers will there.

Except that one needs to re-route and re-arrange feeds at times and
then it's almost inevitable that some dirt gets into the system.

--
Chris Green