water supply line size?


  #1  
Old 04-28-16, 04:57 AM
N
Member
Thread Starter
Join Date: Apr 2016
Posts: 3
Received 0 Votes on 0 Posts
water supply line size?

I am getting a typical 4/2 mobile home put out on some family land. I am being told a few different things about the size of water supply line size to run. I'm going about 900 ft from a 3/4 meter to a 3/4 house. I plan on using rolled poly. Can someone break it down on the technical side of it?
 

Last edited by Nathan Roux; 04-28-16 at 04:59 AM. Reason: spelling
  #2  
Old 04-28-16, 06:07 AM
W
Member
Join Date: Feb 2006
Location: USA
Posts: 6,801
Received 36 Votes on 33 Posts
Supply Line

The plumbers will be along soon.

I would use 3/4 pipe from the meter to the m/h.

Not sure what you mean by "technical side".
 
  #3  
Old 04-28-16, 06:21 AM
N
Member
Thread Starter
Join Date: Apr 2016
Posts: 3
Received 0 Votes on 0 Posts
I know there is some sort of chart or formula they go by . That's what I mean when I say "technical". By the way, this is on level ground, no inclines or declines.
 
  #4  
Old 04-28-16, 03:36 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,161
Received 69 Votes on 61 Posts
Goes by fixture units

2 bath home?


Bathtub or bath/shower 4 units x 2 = 8
Clothes washer 4
Dishwasher 1.5
Hose Bib 2.5
Kitchen Sink 1.5
Lavatory 1 x 2 = 2
Toilet gravity tank 2.5 x 2 = 5

More may be added if you have whilpools are seperate showers. How about irringation system?

About 25 fixture units.

According to the plumbing chart you need a 1" meter and 1 1/2 pipe to the home.

@ 500 ft it will produce 49 units. Since you are 900 feet we divide that by 2 and get 24.5 units..


I would use 3/4 pipe from the meter to the m/h.
3/4 meter and 3/4 service @ 1000 ft produces only 2.5 units.. ( Your water will trickle out the faucets IMO)

And these charts are for copper.. Pex will be less as the ID is smaller.. You may need a 1 1/4 meter...

Call your water department and ask about the meter... They can easily tell you specifics on what you need to do..
 
  #5  
Old 05-02-16, 10:46 AM
N
Member
Thread Starter
Join Date: Apr 2016
Posts: 3
Received 0 Votes on 0 Posts
Thank you for the information. I just left the water dept and they pretty much told me I was forced into a 3/4 or 5/8 meter. Their main is a 3in line and "we have other big houses on this line using a 3/4 meter that works fine." Even tho I told her 900 ft run. So in your professional opinion , could i run a 2 in line from meter to the house and be good? I have a buddy that works at plumbing supply house and he asked a plumber his thoughts and he told him " 2 in is a bit overkill that I should run a 1 1/2 line off the 3/4 meter.
 

Last edited by Nathan Roux; 05-02-16 at 10:51 AM. Reason: added information
  #6  
Old 05-02-16, 01:25 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,161
Received 69 Votes on 61 Posts
I have a buddy that works at plumbing supply house and he asked a plumber his thoughts and he told him " 2 in is a bit overkill that I should run a 1 1/2 line off the 3/4 meter.
According to the plumbing chart you need a 1" meter and 1 1/2 pipe to the home.
I would run the 1 1/2 yes..

And possibly they have higher pressure there too.. Its a good idea to test the psi before you hook up to the home.. A pressure reducing valve may be needed.. ( You want the psi entering the home to be no more then 80 psi..)

Pex is good for 160psi @ 70F..( long term burst rating) Underground of course will be cooler.. The highest psi I ever saw in a home was 130psi so no worries there I assume...

But you never know.. with a 3 " main at the street who knows what the psi is.. You may need something at the meter if its real high psi..

Im curious to find out...
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: