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Check out the evolution of my saga with my water pressure and my water heater here:

Water Pressure Regulator not regulating after rebuild

Here: High water pressure when gauge is not observed

And here: Temperature Pressure Release (TPR) Valve Leaking

While working on the 2nd issue above, I set up a 2 way video call w/myself so I could monitor water pressure guage remotely enter image description here

I confirmed that flushing the Master Bathroom toilet spikes the water pressure up to about 110psi, but immediately after it drops back down to the 60psi where I set it.

Is this a concern? Will it cause damage to the water system associated with high water pressure?

Do I need to fix it, and if so, how?

SDSHuge2.0
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3 Answers3

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It's water hammer. Add a water hammer arrestor near the toilet valve.

Ecnerwal
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You are looking for a problem that doesn't exist. In the real world home water pressure fluctuates.

If you think the gauge is incorrect, change the gauge.

Don't trust the pressure regulator? Buy a new one.

I'm deffinitely obsessed with my water pressure because I don't want to spend thousands of dollars repairing water damage due to a burst pipe or other pressure related issue...

Most all fixtures on the market are tested at much higher pressures than they would be subject to in the real world. ( I know because my wife spent 30 years working in water filter and irrigation manufacturing. Including home systems) Just stay away from the cheep stuff you can buy online.

The fact is your plumbing is not substantially different than your neighbors. If there isn't a history of plumbing issues in the neighborhood related to the water pressure, or for that matter the plumbing age or type, then relax. You are not any more likely to have an issue than most of the rest of us.

RMDman
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This was a false alarm.

After flushing the Master Bedroom toilet, the pressure hand on my gauge does kick back up to about 65psi, but it's the force of the kick that throws the red hand up to around 110psi which is why I thought the pressure was spiking up to 110psi.

Despite this, something is still intermittently causing the pressure in my system to rise and hold at 80-ish psi, and sometimes 100-ish psi. Not all the time, though. For example, the past hour it's held steady at the 60psi that I set the regulator, but then every so often, some combination of events causes it to rise and hold. Not the water heater that I can tell because I can hear that it's not in it's heating mode.

Not sure what it is. Will keep monitoring and report back when I'm able to reproduce it consistently.

SDSHuge2.0
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