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General Plumbing and Gasfitting Talk => Ask Plumbers (Public) => Plumbing => Q & A - Water Pressure => Topic started by: bell on May 14, 2010, 05:30:05 AM

Title: more water pressure
Post by: bell on May 14, 2010, 05:30:05 AM: I have a question, we recently replaced all of out sewer lines in our house. When doing that we had to replace a couple of the supply lines. After we turned the water back on, I have really good water pressure in the back yard, but I hardly have any in the front now. Do you have any suggestions on how to fix this?
Title: more water pressure
Post by: 15mmhexnipple on July 05, 2010, 07:25:04 PM: replace all water pipes underfground to the toby (valve on the street) in 15 or 20mm alkathene
Title: Re: more water pressure
Post by: roberto on May 16, 2012, 07:13:41 PM: I wouldnt use 15mm alkethene, rather 20mm
Title: Re: more water pressure
Post by: Rodza1 on June 15, 2012, 08:34:56 AM: U guys use 15/20mm alkathene for residential water mains? Isnt that low density polyethylene? (LDPE)

I usually use and have always come across MDPE Blueline for a buildings water supply, or if its a dated older watermain HP Pvc, galv, or copper while doing maintenance work etc

I only see alkathene for garden sprinkler systems residentially or for farms rurally, stock trough water supplys etc, never seen for potable supply.
Title: Re: more water pressure
Post by: integrated on June 15, 2012, 08:04:43 PM: ldpe sweetas for most water mains - pressure rated to 600kPa?

whatever product needs to suit intended purpose

I have come across :

galv
ldpe
mdpe
hdpe
various classes pressure
bute (yes bute)
copper

there are still many places/councils using 15mm ldpe for civic/supply side of toby