Water pressure

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  #1  
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.
 
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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
 
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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.
https://www.homedepot.com/p/Watts-3-...IWTG/100175467
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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