Water pressure


Old 12-02-18, 12:35 PM
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Water pressure

I only have about 40 psi water
PVC from the street to-galvanized from underground up to inside house where it connects to pvc then 3/4 copper
Can it be corroded in the galvanized section restricting flow
Any suggestions where to start looking
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Old 12-02-18, 01:51 PM
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Is this lower pressure a new issue, or has it been ongoing for a while?

40psi is definitely on the lower end, but still within 'normal' household pressure. Normal is usually 40-60psi.

More of your issue might be the galvanized pipe restricting flow, you're still getting the pressure you need, but not the volume. Instead of a 3/4" pipe, it seems like a 1/4" pipe, which has nice pressure, but doesn't work well for showers or anywhere you need a significant volume of water too. In most cases, galvanized pipe has (or is near) reaching the end of its serviceable life.
Old 12-02-18, 03:15 PM
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Been this way for years
I just remodeled a bath and put in all the extra fixtures
And now I need more pressure
I was wondering if the galvanized pipe may be corroding and blocking flow
Old 12-02-18, 03:53 PM
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How and where are you measuring the pressure?
Even if the galv. pipe was corroded if you were checking the static pressure at an outside faucet with a gauge like this it should still read the pressure from the main supply.
Galv. pipe rusts from the inside out.
Even if it was corroded it would not effect the pressure, just the avalible flow.
Simple way to picture it try a garden hose and turn it on full wide open then stand on the hose.
A 1/2 line will have almost 1/2 the flow of a 3/4 line, no flow, no pressure.

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