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Tuesday, June 28th 2016, 1:28pm

Author: frankfontana

Sprinkler valve causing humming in pipes in house

I have an automatic sprinkler system with 8 zones. 7 of the zones are fine, however, when one of the zones turns on a loud humming noise starts in the house. You can hear it outside however it's much louder inside the house. Thinking this was a bad solenoid, I replaced the solenoid on the sprinkler valve. This didn't fix the problem. With the sprinkler on, I then tried playing with the adjustment knob (manual flow control) on the top of the sprinkler valve. With the knob fully turned to the righ...