CAUSE #1:
Small debris under rubber seat disc or
pitted rubber seat disc.
SOLUTION:
Remove adaptor from anti-siphon body
and clean debris. If the rubber seat disc is
pitted, remove it, flip it over and
reassemble, or replace seat
disc.
CAUSE #2:
If there is no evidence of debris or pits in
the rubber seat disc, the likely cause is that
the nut at top of diaphragm assembly is
loose allowing water to seep past the
threads of the diaphragm shaft. This
eventually causes the threads to erode and
the problem becomes worse over time.
SOLUTION:
Replace diaphragm assembly or replace
adaptor.
13
Troubleshooting
PROBLEM: Water weeps past the valve
and seeps out of the lowest head.
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