In uk.d-i-y Jeff Layman wrote:
judith wrote:

I do not think the problem is necessarily with the timer - when I
first bought my Gardena irrigation system (quite a few years ago)
there was a pressure control until which went between the tap and the
drippers. I have now added a timer so I have:

tap----timer-----pressure controller------drippers

and it works very well.

I have used a couple of different makes of pressure reducer (Gardena and
Hozelock) and both of them tended to leak from the bleed valve. Both leaked
worse when the initial kick came as the timers switched on. Maybe I was
just unlucky. What experiences have others had with pressure reducers?
--

They always fail on our water supply which is rather high pressure. I
also don't believe they really reduce the pressure, not the ones sold
for garden watering anyway.

For a couple of years I used washing machine solenoid valves with a
cheap plug-in mains timer to time our watering. The timers sold for
irrigation systems are ridiculously expensive in comparison.

However this year a search turned up some quite decent (I hope)
battery operated timers for only £12 (from CyberConnect), so I'm using
one of those this year.

--
Chris Green