Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-14-2013, 09:46 AM   #1
Rivet Master
 
goshawks00's Avatar

 
1966 22' Safari
1954 22' Flying Cloud
Saline , Michigan
Join Date: Aug 2011
Posts: 769
1/2" pex to small?

I am installing a new fresh water tank in 'Cloud' and wonder if 1/2" pex from the tank to the pump is to small? Also is 1/2" to small to carry through out the trailer?
Barry & Karen in Mi.
__________________

__________________
goshawks00 is offline   Reply With Quote
Old 06-14-2013, 10:02 AM   #2
Rivet Master
 
crispyboy's Avatar
 
1994 30' Excella
alexandria , Kentucky
Join Date: Aug 2004
Posts: 1,657
Images: 3
1/2" is plenty for water volume. You could use 1/2" for the main lines and step down to 3/8" on the branch lines depending how your trailer is plumbed if you wanted. The benefit to this is to get hot water to the faucet quicker (using less water) if you are a boondocker.
I would also recommend using the crimp fittings over the quick connect fittings. I have never had a crimp fitting leak whereas quick connects have made a mess.
__________________

__________________
Steve, Christy, Anna and Scout (Border Collie deceased 11-30-2016)
1994 Classic 30'11" Excella - rear twin
2009 Dodge 2500, 6 Speed Auto, CTD, Quad Cab, Short Bed
Hensley with adjustable stinger
WBCCI # 3072
crispyboy is offline   Reply With Quote
Old 06-14-2013, 11:56 AM   #3
4 Rivet Member
 
2017 26' Flying Cloud
Missouri Valley , Iowa
Join Date: Sep 2008
Posts: 338
I just replumbed my '89 25' Excella with 1/2" PEX throughout. I used flexible reinforced vinyl hose from tank to pump and pump to PEX. We have plenty of volume. The job was not as bad as I had feared. I used the Sharkbite fittings without a single leak. For the trial and error that seemed necessary for me to get things fit together it was worth the extra cost to be able to assemble and then disassemble to trim off an inch or two. Be sure to make square cuts with a tubing cutter on the PEX. Also be sure to buy the little horseshoe shaped disassembly tool. If you do the entire trailer be sure to make a detailed drawing of what goes where before removing the old lines!
Dan
__________________
Farmer Dan is offline   Reply With Quote
Old 06-14-2013, 03:53 PM   #4
Rivet Master
 
1988 32' Excella
Robbinsville , New Jersey
Join Date: May 2012
Posts: 1,010
I agree 1/2" is plenty, I had a trailer with 1/2" and 3/8" and had no problems with volume. With that said I would use 1/2" throughout to reduce the emergency kit size (not needing both 1/2" and 3/8" fittings and pipe).

I prefer the clamps or compression fittings over the Sharkbite (push on) fittings for something going over the road, just afraid the vibrations of travel would be more likely to cause a leak with the Sharkbites (personal feeling, no experience to back it up).

Also flexible reinforced vinyl hose to and from the pump to isolate vibration and reduce noise is a good idea.
__________________
Wazbro is offline   Reply With Quote
Old 06-14-2013, 07:08 PM   #5
BAB
Rivet Master
 
BAB's Avatar

 
2015 30' Classic
2012 28' International
Greensboro , North Carolina
Join Date: Aug 2011
Posts: 1,574
I have done a LOT of plumbing work with PEX and it is a fantastic product. Do use the crimp fittings, though. The tool is a bit pricey (around $100 as I recall, but you can probably rent one...). It is almost impossible to screw up a crimp, as the crimp tool will include a little device that you slide over the ring once you crimp it. If you should screw up a crimp you'll know it right then, not once you turn on your water supply! As you probably know you can buy it in white, red, or blue. You'll always know which is the hot water line if you use red! Good luck with the install. Trust me, it's a lot easier for an amateur than learning to solder copper tubing.....
__________________
_________________
"SilverLeaf II" 2015 30' Classic
2014 RAM 2500 Laramie 4x4 CC w/6.7L Cummins
ProPride 3P
AIR# 58452
WBCCI # 3430-Unit 21
BAB is offline   Reply With Quote
Old 06-14-2013, 07:59 PM   #6
Rivet Master
 
goshawks00's Avatar

 
1966 22' Safari
1954 22' Flying Cloud
Saline , Michigan
Join Date: Aug 2011
Posts: 769
Thanks guys , I am very familiar with pex having used it completely on our last build. I just wasn't sure about using it between tank and pump being that that line will at least in part be in between the floor and belly pan. Size /diameter was the only issue. Thanks again,
Barry
__________________
goshawks00 is offline   Reply With Quote
Old 06-14-2013, 08:00 PM   #7
Full Time Alumaloafer
 
louaxtjr's Avatar
 
1966 24' Tradewind
Livingston , Texas
Join Date: Aug 2007
Posts: 143
Images: 12
1/2" PEX is the way to go, as others have indicated above. I also agree with the crimp-on connectors. I did my '66 Tradewind in 1/2" PEX throughout using them, and it was inexpensive, easy, and near fool-proof. I went with 1/2" due to easy availability of fittings, but would have gone smaller otherwise. The 1/2" delivers more than enough flow.

I did take care to make assemblies for spaces where the crimp tool wouldn't fit. This created 2 additional joins, but none of the crimps leaked, though this was my first time working with PEX.

Good luck and God bless!
__________________
Lou Axt, Jr.
1966 Tradewind
1969 Chevy C10
_____________

Phillipians 4:13
louaxtjr is offline   Reply With Quote
Old 06-14-2013, 08:01 PM   #8
Full Time Alumaloafer
 
louaxtjr's Avatar
 
1966 24' Tradewind
Livingston , Texas
Join Date: Aug 2007
Posts: 143
Images: 12
I did use pex off the tank, to the pump without any problem.
__________________

__________________
Lou Axt, Jr.
1966 Tradewind
1969 Chevy C10
_____________

Phillipians 4:13
louaxtjr is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:11 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.