Not Ranked
I had an intermitent low water pressure problem in a pumping system. I would pressure test it, turn off valves, turn them back on, knock on the pipes, stand on one foot, howl to the moon, and the problem would go away. Couple of hours, maybe couple of days, it was BACK!!
Eventually I had some pipes cut open. We found a short piece of 2X4 floating around inside the pipe system, blocking it "sometimes". Welded, sealed pipe! Must have gotten in when the pipes were originally assembled (I guess, the welders denied everything, lol).
Ernie
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