Home » Public Forums » GMCnet » [GMCnet] shopping list for plumbing upgrades
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| Re: [GMCnet] shopping list for plumbing upgrades [message #179429 is a reply to message #179428] |
Tue, 07 August 2012 16:21   |
Sean
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Registered: March 2012
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On Tue, Aug 7, 2012 at 3:19 PM, Larry Davick <ljdavick@comcast.net> wrote:
> I wish I had, but I always buy twice as much as I think I'll need and then make multiple trips back to the hardware store to get all those things I didn't think about.
>
> In any case your '73 probably has a lot of copper. I hope you are replacing it with PEX.
Yes, PEX is the plan. Any info re quantities, sizes, fittings, etc
would be greatly appreciated!
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Sean
1973 260 Painted Desert
Luna County, NM
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| Re: [GMCnet] shopping list for plumbing upgrades [message #179430 is a reply to message #179427] |
Tue, 07 August 2012 16:41 |
GeorgeRud
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Location: Chicago, IL
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Can't help with fittings, etc., but I used 1/2" PEX for the sections I replaced. If you have the wall and ceiling panel off in the areas the water lines run, you should be able to see what fittings you need.
I used the slip on fittings, but I think I would use the clamp on fittings if I had to do it over. You do need to get (rent?) a PEX crimping tool, but it would make the job easier in my opinion.
Also, be sure to plan out the runs very carefully to be sure that you can completely drain the system if you live in an area where freezing temperatures are encountered. I found all the fittings I needed at the local Menard's, but I imagine they all carry them.
George Rudawsky
Chicago, IL
75 Palm Beach
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| Re: [GMCnet] shopping list for plumbing upgrades [message #179441 is a reply to message #179430] |
Tue, 07 August 2012 17:33 |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
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And I would buy blue tubing for cold and red for hot. But then you probably already thought of that.
I have noticed a couple of back-flow restrictors - one at the shower head and one on the water heater. I imagine there are replacements for these available. Also my shower head was not installed when I got the coach and have never really found a satisfactory solution to mounting it. I do have a bulkhead fitting that I might put in, but it requires a larger hole, so I simply punted that 'till later. We haven't used the coach shower yet anyway.
If your coach is plumbed like my Palm Beach then you'll have that goofy setup at the fresh water tank where a drain (with a valve that is closed when you think it's open) and a drain (that work very slowly) are present within inches of each other. Replacing them with a proper ball valve makes total sense. The advise about maintaining positive drain-flow to prevent freezing is sage. Although PEX will withstand freeze / thaw much better than copper.
Larry Davick
Fremont, California
A Mystery Machine
'76 (ish) Palm Beach
----- Original Message -----
From: "George Rudawsky" <GeorgeRud@aol.com>
To: gmclist@temp.gmcnet.org
Sent: Tuesday, August 7, 2012 2:41:39 PM
Subject: Re: [GMCnet] shopping list for plumbing upgrades
Can't help with fittings, etc., but I used 1/2" PEX for the sections I replaced. If you have the wall and ceiling panel off in the areas the water lines run, you should be able to see what fittings you need.
I used the slip on fittings, but I think I would use the clamp on fittings if I had to do it over. You do need to get (rent?) a PEX crimping tool, but it would make the job easier in my opinion.
Also, be sure to plan out the runs very carefully to be sure that you can completely drain the system if you live in an area where freezing temperatures are encountered. I found all the fittings I needed at the local Menard's, but I imagine they all carry them.
--
George Rudawsky
Chicago, IL
75 Palm Beach
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] shopping list for plumbing upgrades [message #179478 is a reply to message #179427] |
Tue, 07 August 2012 23:11 |
zhagrieb
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Location: Portland Oregon
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I used 1/2" PEX with crimp fittings. I'd suggest using 10 foot straight sections as the rolls want to stay rolled so straight is easier to work with and neater when done. You'll probably only find it in white. Lowes has all the fittings including a crimping tool (for about $70) I'm sure Home Depot has the same. Harbor freight has a cheaper crimp tool. You'll also need a tubing cutter and crimp cutter (as in "darn, I have to do that joint over"). Since the crimp tool is big and needs room to work I premade any joints that were for hard to get at areas then maneuvered the tubing into place. There are "push on" fittings that are easiest to use but last time I checked they were over $5 each. PEX will bend around large radius corners but you'll need 90 degree fittings for tight turns. You'll also need adaptors to connect with faucets, pump and water heater. If you have any copper get rid of it an start fresh. PEX tolerates freezing pretty well but as someone else pointed out make sure your runs all head downhill to a drain point. You can google PEX for lots of good info.
Glenn
Glenn Giere, Portland OR, K7GAG
'73 "Moby the Motorhome" 26'
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| Re: [GMCnet] shopping list for plumbing upgrades [message #179491 is a reply to message #179478] |
Wed, 08 August 2012 01:05 |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
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Glenn,
That’s a very interesting point about using straight vs rolled stock. I’d never have thought of the curling issue.
Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, CA
On Aug 7, 2012, at 9:11 PM, Glenn Giere wrote:
>
>
> I used 1/2" PEX with crimp fittings. I'd suggest using 10 foot straight sections as the rolls want to stay rolled so straight is easier to work with and neater when done. You'll probably only find it in white. Lowes has all the fittings including a crimping tool (for about $70) I'm sure Home Depot has the same. Harbor freight has a cheaper crimp tool. You'll also need a tubing cutter and crimp cutter (as in "darn, I have to do that joint over"). Since the crimp tool is big and needs room to work I premade any joints that were for hard to get at areas then maneuvered the tubing into place. There are "push on" fittings that are easiest to use but last time I checked they were over $5 each. PEX will bend around large radius corners but you'll need 90 degree fittings for tight turns. You'll also need adaptors to connect with faucets, pump and water heater. If you have any copper get rid of it an start fresh. PEX tolerates freezing pretty well but as someone else pointed
> out make sure your runs all head downhill to a drain point. You can google PEX for lots of good info.
>
> Glenn
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] shopping list for plumbing upgrades [message #180010 is a reply to message #179478] |
Sun, 12 August 2012 21:00 |
Dennis S
Messages: 3046
Registered: November 2005
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| Glenn Giere wrote on Tue, 07 August 2012 23:11 |
I used 1/2" PEX with crimp fittings. I'd suggest using 10 foot straight sections as the rolls want to stay rolled so straight is easier to work with and neater when done. You'll probably only find it in white. Lowes has all the fittings including a crimping tool (for about $70) I'm sure Home Depot has the same. Harbor freight has a cheaper crimp tool. You'll also need a tubing cutter and crimp cutter (as in "darn, I have to do that joint over"). Since the crimp tool is big and needs room to work I premade any joints that were for hard to get at areas then maneuvered the tubing into place. There are "push on" fittings that are easiest to use but last time I checked they were over $5 each. PEX will bend around large radius corners but you'll need 90 degree fittings for tight turns. You'll also need adaptors to connect with faucets, pump and water heater. If you have any copper get rid of it an start fresh. PEX tolerates freezing pretty well but as someone else pointed out make sure your runs all head downhill to a drain point. You can google PEX for lots of good info.
Glenn
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Glenn or anyone else who has done pex...
Have you considered using the pex pipe supports to create tight ninety degree bends ? Seems like one might be able to avoid a few fittings/connections and also provides an anchor for attaching the pipe to minimize movement.
http://www.watts.com/pages/_products_details.asp?pid=3228
Dennis
Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: [GMCnet] shopping list for plumbing upgrades [message #180018 is a reply to message #179987] |
Sun, 12 August 2012 22:05 |
John Sharpe
Messages: 489
Registered: February 2006
Location: Texas
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| Quote: |
..... (red and blue, 100' of each - I'm sure
I'll find a use for the excess),....
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Sean, I was told to store the extra out of sun light and don't install where it will be exposed. Maybe store it in the attic or a closet. Seems the light rays attack the plastic.
John Sharpe
Humble,TX
'78 Eleganza TBI
'89 Spectrum 2000 MPI V-10
'40 Ford Panel Delivery TPI
johnasharpe@gmail.com
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| Re: [GMCnet] shopping list for plumbing upgrades [message #180021 is a reply to message #180018] |
Sun, 12 August 2012 22:43 |
Sean
Messages: 189
Registered: March 2012
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On Sun, Aug 12, 2012 at 9:05 PM, John Sharpe <johnasharpe@earthlink.net> wrote:
>
>
> Quote:
>> ..... (red and blue, 100' of each - I'm sure
>> I'll find a use for the excess),....
>
>
> Sean, I was told to store the extra out of sun light and don't install where it will be exposed. Maybe store it in the attic or a closet. Seems the light rays attack the plastic.
Thanks for the tip! It's in the coach now, but the curtains are shut -
will move it to the shed until I'm ready to start working on it :)
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Sean
1973 260 Painted Desert
Luna County, NM
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| Re: [GMCnet] shopping list for plumbing upgrades [message #180027 is a reply to message #179430] |
Sun, 12 August 2012 23:57 |
bukzin
Messages: 840
Registered: April 2004
Location: North California
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| GeorgeRud wrote on Tue, 07 August 2012 14:41 |
Can't help with fittings, etc., but I used 1/2" PEX for the sections I replaced. If you have the wall and ceiling panel off in the areas the water lines run, you should be able to see what fittings you need.
I used the slip on fittings, but I think I would use the clamp on fittings if I had to do it over. You do need to get (rent?) a PEX crimping tool, but it would make the job easier in my opinion.
Also, be sure to plan out the runs very carefully to be sure that you can completely drain the system if you live in an area where freezing temperatures are encountered. I found all the fittings I needed at the local Menard's, but I imagine they all carry them.
|
+++++++++++++++++++++++++++++++++++++++++++++++
In our area, it seems you need to look in the mobile home
dept. of the hardware store for PEX items.
Bukzin
1977 Palm Beach
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| Re: [GMCnet] shopping list for plumbing upgrades [message #180028 is a reply to message #179987] |
Mon, 13 August 2012 00:00 |
bukzin
Messages: 840
Registered: April 2004
Location: North California
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| Sean wrote on Sun, 12 August 2012 16:24 |
Picked up my PEX pipe yesterday (red and blue, 100' of each - I'm sure
I'll find a use for the excess), and a big pile of Sharkbite tees,
elbows, and couplings are order. Once the job's all done, I'll post
the final shopping list somewhere for future reference.
Thanks for the advice, all!
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+++++++++++++++++++++++++++++++++++++++++++
Don't forget the photos too!
Bukzin
1977 Palm Beach
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| Re: [GMCnet] PEX instructions [message #180040 is a reply to message #180032] |
Mon, 13 August 2012 07:04 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
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Unless you bend against the roll curvature, then the "fudge factor" is 24
& minimum radius is 12"!
Rob, as fastidious as you are, I'm surprised you didn't protest
"WaterPEX® tubing expands at a rate of 1.1" per 100' of pipe for
every 10°F (6ºC) temperature drop." :-)
That and other similar errors ("Do Not Exceed The Minimum Bend Radius")
really annoy me in a technical paper! Reflects careless writing and
inadequate editing. (But I guess it's OK if you're working with "pip".)
:-)
Ken H.
On Mon, Aug 13, 2012 at 1:13 AM, Rob Mueller wrote:
> Nice find!
>
> Note:
>
> The minimum bend radius for WaterPEXR pipe is eight times the outside
> diameter of the pipe.
>
> Therefore the tightest radius you can make on 1/2" pip is 4 inches
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] PEX instructions [message #180044 is a reply to message #180040] |
Mon, 13 August 2012 07:29 |
Dolph Santorine
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
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One of the PEX manufacturers make a really trick 90 degree "holder" that keeps you honest on the bend radius.
Dolph Santorine
Dolph@DolphSantorine.com
Excuse me for not being my usual wordy and sporadically verbose self. This message is sent from my iPhone.
No trees were killed in the sending of this message and few long dead dinosaurs were involved. A large number of electrons were terribly inconvenienced.
On Aug 13, 2012, at 8:04 AM, Ken Henderson <hend4800@bellsouth.net> wrote:
> Unless you bend against the roll curvature, then the "fudge factor" is 24
> & minimum radius is 12"!
>
> Rob, as fastidious as you are, I'm surprised you didn't protest
> "WaterPEX® tubing expands at a rate of 1.1" per 100' of pipe for
> every 10°F (6ºC) temperature drop." :-)
>
> That and other similar errors ("Do Not Exceed The Minimum Bend Radius")
> really annoy me in a technical paper! Reflects careless writing and
> inadequate editing. (But I guess it's OK if you're working with "pip".)
> :-)
>
> Ken H.
>
>
>
> On Mon, Aug 13, 2012 at 1:13 AM, Rob Mueller wrote:
>
>> Nice find!
>>
>> Note:
>>
>> The minimum bend radius for WaterPEXR pipe is eight times the outside
>> diameter of the pipe.
>>
>> Therefore the tightest radius you can make on 1/2" pip is 4 inches
>>
>>
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| Re: [GMCnet] PEX instructions [message #180045 is a reply to message #180044] |
Mon, 13 August 2012 07:38 |
Dennis S
Messages: 3046
Registered: November 2005
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Rob,
Here is pex 90 degree holder I have seen at Lowes (the one I had in my other post may not be the same) -- it won't work too well in the narrow space in the wall of a wet bath, but it seems it would have great application in bends up and over the ceiling from the city water supply and from the fresh water tank along to the water heater. At least on my GMC fitted coach I think it would allow me to use 3-5 fewer pex fittings and provide some anchor points as well....
http://goo.gl/VuNYI
Dennis
Dennis S
73 Painted Desert 230
Memphis TN Metro
[Updated on: Mon, 13 August 2012 07:42] Report message to a moderator |
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