Reply
 
Thread Tools Display Modes
 
Old 05-17-2019, 06:42 PM   #1
Mini-Skoolie
 
Join Date: Aug 2017
Posts: 43
Question Residential Pressure through Quality Plumbing

While on hookups, I want to take advantage of the full residential water pressure coming from the tap. I also want quality plumbing to last for decades. Off hookups, I'll need to put a regulator on the consumption, so do I use a smaller diaphram pump or put a regulator fitting after the accumulator?


First off, where does residential & RV park water pressure top out at so I can build for the highest tap pressure I'll encounter + 50 PSI? 150 PSI? 190 PSI? Can copper piping withstand decades of vibrations in a traveling skoolie? What is the typical residential plumbing size? 3/4 inch, 1 inch, other? What is the best plumbing money can buy?
debit.servus is offline   Reply With Quote
Old 05-17-2019, 06:51 PM   #2
Bus Geek
 
Join Date: May 2016
Location: Eastern WA
Posts: 4,200
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
I have stayed at parks with water pressure ranging from 20psi to over 90psi.

I would recommend that you have a pressure regulator on your city water connection.

Your house water pump is regulated around 35psi.
PNW_Steve is offline   Reply With Quote
Old 05-17-2019, 08:32 PM   #3
Mini-Skoolie
 
matthews2001's Avatar
 
Join Date: Oct 2018
Location: Southern VT
Posts: 38
Year: 2001
Chassis: Allison MD 3060
Engine: Catepillar 3126B 210hp/605 ft lb
Dont need time and expense of copper.

Go with 1/2 pex as easily available and cheap, fittings too. Could go smaller but less available, and same price.

RV pumps often are built in check valves, so just install RV
city water connector anywhere convenient .

No reason a regulator needed except caution.
matthews2001 is offline   Reply With Quote
Old 05-18-2019, 01:16 AM   #4
Mini-Skoolie
 
Join Date: Aug 2017
Posts: 43
How about when I am parked with family, hooked up to the garden hose? I want to be able to enjoy max flow rate while on shore water.



I ask about copper pipe because it wont degrade over the decades, even with millions of thermal cycles.
debit.servus is offline   Reply With Quote
Old 05-18-2019, 01:23 AM   #5
Bus Nut
 
Join Date: Jun 2016
Location: Orange County, CA
Posts: 776
Year: 1990
Coachwork: integral
Chassis: Crown Supercoach II (rear engine)
Engine: Detroit 6V92TAC, DDEC 2, Jake brake, Allison HT740
Rated Cap: 37,400 lbs GVWR
City water pressures can vary a lot. Here it's about 60 PSI in the storage yard where I keep my bus, some places are well less than 50 PSI, and I've heard horror stories about some RV parks with almost 90 PSI. For this reason I have a Watts 263A adjustable pressure regulator to ensure my bus water pressure is never more than 45 PSI, whether I'm using city water or drawing water from my tanks through the SHURflo 2088 pumps. I've adjusted the pumps to 45 PSI output, and that's plenty for me in the bus. I'm using 1/2" PEX throughout, and 45 PSI gives a good flow. To monitor water pressure I have two 100 PSI gauges, one for incoming city pressure and one for bus pressure. So far, so good.

John
Iceni John is offline   Reply With Quote
Old 05-18-2019, 01:54 AM   #6
Bus Crazy
 
Sleddgracer's Avatar
 
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 1,008
Chassis: still looking for my bus
Quote:
Originally Posted by debit.servus View Post
How about when I am parked with family, hooked up to the garden hose? I want to be able to enjoy max flow rate while on shore water.



I ask about copper pipe because it wont degrade over the decades, even with millions of thermal cycles.
I have a domestic water pump in my home ( we live in the country and have our own water system ) - it turns on when the pressure drops to 35 lbs and turns off when it reaches 50 lbs - it gives a measured 5 Imperial gallons per minute ( that works out to just over 5 1/2 US gal ) which happens to be ample to supply a vigorous shower
Sleddgracer is offline   Reply With Quote
Old 05-18-2019, 04:22 PM   #7
Mini-Skoolie
 
Join Date: Aug 2017
Posts: 43
The question becomes the maximum working water pressure household plumbing supports per building codes. If I come across 90 PSI I want 90 PSI in the shower. I might be using the wrong metric, is there a measurement that is the fluid equivalent of watts? Combining pressure / flow rate into one number or an equation?

Basically I want the maximum output of the tap I’m hooked upto coming into the shower, upto 150-200 PSI. Why settle for good when you can build amazing?
debit.servus is offline   Reply With Quote
Old 05-18-2019, 04:31 PM   #8
Bus Crazy
 
Sleddgracer's Avatar
 
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 1,008
Chassis: still looking for my bus
Quote:
Originally Posted by debit.servus View Post
The question becomes the maximum working water pressure household plumbing supports per building codes. If I come across 90 PSI I want 90 PSI in the shower. I might be using the wrong metric, is there a measurement that is the fluid equivalent of watts? Combining pressure / flow rate into one number or an equation?

Basically I want the maximum output of the tap Iím hooked upto coming into the shower, upto 150-200 PSI. Why settle for good when you can build amazing?
I doubt that residential plumbing is built to withstand that kind of pressure - there is almost always a pressure regulator on the incoming water line right after it comes through the wall - it's usually set at 50 lbs

https://www.popularmechanics.com/hom...a1053/4202333/
Sleddgracer is offline   Reply With Quote
Old 05-18-2019, 05:05 PM   #9
Bus Geek
 
o1marc's Avatar
 
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 5,748
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
Quote:
Originally Posted by debit.servus View Post
The question becomes the maximum working water pressure household plumbing supports per building codes. If I come across 90 PSI I want 90 PSI in the shower. I might be using the wrong metric, is there a measurement that is the fluid equivalent of watts? Combining pressure / flow rate into one number or an equation?

Basically I want the maximum output of the tap Iím hooked upto coming into the shower, upto 150-200 PSI. Why settle for good when you can build amazing?
You'll find at those pressure the seals were not meant to handle those kinds of pressures and may start leaking.
o1marc is offline   Reply With Quote
Old Yesterday, 12:42 PM   #10
Mini-Skoolie
 
Join Date: Aug 2017
Posts: 43
So if I’m understanding this correctly, if a tap is 90 psi through half inch, and my bus plumbing is all 1” PEX, with a garden hose inlet. 90 psi from a half inch pipe would be freed into a 1 inch pipe, same flow rate but lower pressure because the water has a larger channel.

I laugh at these misers who have unlimited tap water, yet set their flow to a dribble because they believe water is scarce and it’s morally wrong to use more than the bare minimum to get the job done, spending two hours to scrub 12 dishes & beating themselves up over a half a gallon.

Scarcity does not create abundance!
debit.servus is offline   Reply With Quote
Reply

Tags
plumbing, pressure, psi, quality, residential

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 06:33 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.