"Yuri" wrote in message
...
Martin Brown wrote:
Yuri wrote:
Have been given a kit for the greenhouse whilst on hols. Previous owner
couldn't make it work and neither can I. It comprises a pressure reducer
joint, black tubing and a number of plastic drippers and joints. The
problem is that when connected up the flow at the ends of the pipes is a
steady drip but this tapers off the nearer to the reducer joint you get.
If you adjust the flow for a consistent drip close to the joint the
steady drip tuns into a steady stream at the ends of the network. Have
tried varying the pressure but with no success. Can anyone offer any
help?

Is there a big change in level? The main problem I had with mine using
captured rainwater was mozzie larvae clogging the jets. This was resolved
by putting a piece of old tights across the pump inlet.

Worth looking to see if some of the jets are blocked or clogged. Usually
the drip rate gets weaker the further you are from the reducer.

Thanks for replies. Fed by standard hose 70 feet from tap and controlled
on/off by old washing machine cold water solenoid in greenhouse which then
feeds in to a reducer valve and there are only 4 drips off a single 10
foot feed into 15" tubs. End of hose clamped off drips are tee-ed off
central pipe and tubs are 18" apart. Have tried reversing pipe in case
there were larger holes in drips but did not make any difference as did
making the feed pipe 20 foot longer to see if the pressure drop would
help.
No supplier/maker detail as was bought from local garden centre and
packaging was binned. Sat in his shed from last year until given to me to
try, but I suspect it could be an 'el cheepo' chinese job.

If the ends of the pipe are lower than the rest of the system it could
contribute to the problem. However if you cannot solve it try your local
petstore for a fishtank airline clamp that way you can vary the flow as
required down the line
http://www.swelluk.com/aquarium/aqua...clamps-53.html

Derek