Re: Low pressure on sprinklers
You replaced the valve internals, did you replace the solenoid? Will the sprinklers pop if you manually open the valve with either the air bleed screw or by loosening the solenoid? If you do get full pop, then it is the solenoid on the valve that is bad. FYI, there are two types of solenoids on residential systems. Turn off the water to the sprinkler system so that you can remove the solenoid and take it with you to the store to match up to the new one. Also note the brand of the valve.
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