I had a cracked on my main water supply pipe (one inch diameter PVC pipe).
There is a water pressure regulator to lower the city water pressure coming
in to the house.
The crack happen about halfway (10 feet) between the city water meter and
the pressure regulator.
The PVC pipes are underground (7 years, not that old).
Plumber fixed it, but did not have a clue as to what could have caused PVC
I suspect that somehow my water pressure regulator (due to the city high
water pressure) is causing my pipes to flex or oscillate underground causing
then to crack (which means it will happen again).
Has anyone seen this before? Any permanent fixes?
Thanks for the help...Jose
You are saying that the meter is first (at the street)
and the regulator is at the house?
So, the crack occurred in a section which is *not* regulated?
If that is the case, you may have to move the regulator
out to the meter box.
City pressure can be very high, especially at night. There can
also be extreme pressure surges.
Along with the regulator, you almost surely need an expansion tank
to absorb thermal expansion from the water heater. Put a pressure
gauge on the system to see what is happening.
So find an all-female PVC factory? How do you research that?
I suspect that the pipe may have been put in without
sufficient gravel around it, the dirt settled over time,
separated away from the pipe, allowed it to move,
allowed it to 'hammer', resonate, whatever. And with that
regular flexion, caused itself to flex itself into a failure, and
was indeed caused by a defective installation rather than
This is Turtle.
Websters says if your speaking about a group of humans and do not know their
Gender. You should refer to the Male Gender in speaking about the group. now
if you do know it is not a mixed group and all female use female gender. You
should use the correct gender to match the groups gender if known , but if
unknown use the male gender.
Now to the split pipe. Hummmm You may have something there.
<< The crack happen about halfway (10 feet) between the city water meter and
the pressure regulator. >>
A logical fix might be to replace that line with a material that is either much
more robust or with enough flexibility to withstand the pressure surges. As
another poster noted, proper ibstallation is vital. Your city hall will have a
code for approved kinds of pipe. Something in Schedule 80 pipe may be netter
for this application. Good luck,
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