Question about Garden
The common problem is the water admittance valve that controls the pressure. When you open the trigger, the pressure drops and the valve allows more water to go to the pump where its pressure is boosted. When trigger closes, the pressure boosts and the valve prevents more wwater in, hence regulaating the pressure.
These valves stick, usually at the high pressure position and do not let more water in sufficiently to be pumped.
Dis-assemble the valve and clean the bore with crocus cloth on a dowel rod. Then replace the O rings in the valve with identical ones or get a kit of them. Lube the rings with plumbers grease and re-assemble...
You can find illustrations of the pump assembly online with google.
This should restore your pressure and trigger action.
Posted on Jul 20, 2010
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Posted on Jan 02, 2017
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