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Old 26-07-2011, 12:26 AM posted to rec.gardens
David Hare-Scott[_2_] David Hare-Scott[_2_] is offline
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First recorded activity by GardenBanter: Sep 2008
Posts: 3,036
Default Sprinkler question

Steve B wrote:
I just added on about six bubblers to three Orbit gear drive lawn
sprinklers. They have a 3/4" feed at about 50 psi. The three lawn
sprinklers now don't spray nearly as much. I took off the guts, and
the filters were not clogged. I turned down the bubblers so they are
just coming out a little. The other stations function properly.

Do you think I have a clog, or is that too many to put on one line? I can
put a pressure reducer on to that leg. But like I say, I
barely have the bubblers on, and don't think that's enough to drop
the performance of the lawn sprinklers by half.

I'm puzzled.

Help appreciated.

Steve


It's hard to say without being there and having some feel for how the system
behaves under different loads. If you suspect a clog then open joints
progressively (and close them again) starting at the pump until you find the
section with a big drop in flow. I am assuming you have polypipe not
threaded metal. OTOH if the system returns to how it was beforehand when
you turn off the new heads then it is overloaded.

D