Water pump pulsing

[Rob Culver]

Originally Posted by Idaho Adventurer

I had to make this adjustment to mine last year because I installed a new low flow shower head, and even with the water on all the way, the pump would pulse on and off resulting in hot cold pulsing. I can't remember exactly how I got to the adjustment screw on the pump, but you're right in that it was very difficult to get adjusted do to being so tight of access under there. However, adjusting it solved my problem.

Hi Idaho,
Once you made the adjustment, did it eliminate the pulsing from other faucets besides the shower, even when there was low water flow?

[Idaho Adventurer]

Originally Posted by Rob Culver

Hi Idaho,
Once you made the adjustment, did it eliminate the pulsing from other faucets besides the shower, even when there was low water flow?

For the most part, yes. It will still pulse some if a faucet is only opened up a little. It's in the nature of those pumps to do that. You just don't want them pulsing when you have a faucet opened all the way. When that's happening, the water pressure surges causing a surge/pulse of hot/cold. That's what the adjustment can fix.