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Old 01-22-2017, 10:14 AM   #1
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Pressure Problem in home off city water


I suspect I know the issue here but would like some second opinions.

I have municipal water coming into the home, main water line is 5/8 which goes down to 1/2 after the water meter. Anytime there are 2 things drawing water I have very low pressure.

I think there is just too many taps for the 1/2 line to handle. There are 8 taps in the home total, basement and main level only.

I'd like to run a new 3/4 water line from the water meter to the hot water tank.

Are there any issues having the inside piping a larger size then the water main to the home?

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Old 01-22-2017, 03:20 PM   #2
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Re: Pressure Problem in home off city water


If your in the US there is no such thing as 5/8 pipe.
Is it steel pipe?
Steel pipe tends to close up on the inside over the years and will always leak at some point.
http://www.engineeringtoolbox.com/an...pes-d_305.html
A 3/4" pipe will have almost double the avalible flow of a 1/2 pipe, but for the maximum flow rate anything down line would have to be the same or larger.
Adding a pressure tank as well as a larger line may be the way to go.
http://residential.goulds.com/water-...-do-they-work/

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Old 02-05-2017, 12:15 AM   #3
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Re: Pressure Problem in home off city water


Thanks joecaption

I am in Canada, I did call the town public works recently and they said 5/8 was commonly used 50-70 years ago around here, the house was built in the late 50's. The outside diameter of the copper tubing is 3/4" so I believe the inside is 5/8...

It is a copper main buried water line.
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