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12-17-2010, 08:07 PM
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#1
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Rivet Master
1974 31' Excella 500
Charleston
, South Carolina
Join Date: Nov 2010
Posts: 1,073
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Gas piping replacement
I have to replace the entire LP piping system in a 74 31'.
I have the diagram so I'm good there.. What I'm exploring now is what materials to use. From what I've gathered so far, the best bet is to go with the "black" pipe for the main line and use copper for the offshoot lines that go to the appliances.
Some pipe cutting and threading doesn't seem so bad.. is this really the best/safest way to go with this?
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12-17-2010, 08:28 PM
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#2
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by DanielB
I have to replace the entire LP piping system in a 74 31'.
I have the diagram so I'm good there.. What I'm exploring now is what materials to use. From what I've gathered so far, the best bet is to go with the "black" pipe for the main line and use copper for the offshoot lines that go to the appliances.
Some pipe cutting and threading doesn't seem so bad.. is this really the best/safest way to go with this?
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You can use copper tubing, for all of the LPG lines, as Airstream has done.
However, no splices or "T's" are allowed in the interior.
All the tubing, must be exposed, except when it goes thru the underbelly and thru the floor, into the trailer.
Andy
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12-17-2010, 08:36 PM
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#3
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Rivet Master
San Angelo
, Texas
Join Date: May 2005
Posts: 1,254
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Daniel,
I know others will agree when I say that it is the only way to go. When you are strapping the copper line on to the underbelly, make sure that you use rubber insulators, so the metal doesn't rub through the line.
__________________
Frederic
1971 Sovereign International - SOLD
2004 F-350 King Ranch
AIR # 8239
EX-WBCCI # 8371
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12-17-2010, 08:39 PM
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#4
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Rivet Master
1974 31' Excella 500
Charleston
, South Carolina
Join Date: Nov 2010
Posts: 1,073
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Quote:
Originally Posted by Inland RV Center, In
You can use copper tubing, for all of the LPG lines, as Airstream has done.
However, no splices or "T's" are allowed in the interior.
All the tubing, must be exposed, except when it goes thru the underbelly and thru the floor, into the trailer.
Andy
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So copper for everything? Should be easier than cutting and threading the black pipe.
Did they ship my floor channel?
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12-17-2010, 08:45 PM
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#5
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by DanielB
So copper for everything? Should be easier than cutting and threading the black pipe.
Did they ship my floor channel?
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It should ship Monday from Ohio, in 4 foot pieces.
Andy
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12-17-2010, 09:05 PM
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#6
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Rivet Master
1974 31' Excella 500
Charleston
, South Carolina
Join Date: Nov 2010
Posts: 1,073
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Awesome. Thanks.
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12-17-2010, 09:14 PM
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#7
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Rivet Master
2005 22' Safari
Hyde Park Place
, Ohio
Join Date: Jul 2010
Posts: 973
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Quote:
Originally Posted by DanielB
So copper for everything? Should be easier than cutting and threading the black pipe.
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That's code. Code is really particular about the "no tees or joins inside the trailer" rule. It's also safer.
__________________
TX-16
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12-17-2010, 09:24 PM
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#8
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x
XXXX
, XXXX
Join Date: Jun 2010
Posts: 2,601
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Quote:
Originally Posted by Dave Park
That's code. Code is really particular about the "no tees or joins inside the trailer" rule. It's also safer.
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No shut off valves inside either. Also code.
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12-18-2010, 01:01 AM
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#9
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Maniacal Engineer
1971 25' Tradewind
Lopez Island
, Washington
Join Date: Jan 2010
Posts: 1,244
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Quote:
Originally Posted by wasagachris
No shut off valves inside either. Also code.
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The stove and fridge both have such from the factory on our '71, though.
- Bart
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12-18-2010, 10:12 AM
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#10
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Site Team
1974 31' Sovereign
Ottawa
, ON
Join Date: May 2008
Posts: 11,219
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Quote:
Originally Posted by barts
The stove and fridge both have such from the factory on our '71, though.
- Bart
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Ditto. As do all AS TTs I have seen.
__________________
“Courage is being scared to death, but saddling up anyway.” ...John Wayne...........................
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12-18-2010, 11:23 AM
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#11
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Rivet Master
1965 22' Safari
Vassar
, Michigan
Join Date: Jun 2009
Posts: 848
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Mine as shut offs for the fridge, stove and furnace. We have updated the appliances but the shut offs were original from the factory.
__________________
Tim
TAC MI 14
Everyday is a Saturday
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12-18-2010, 12:59 PM
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#12
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x
XXXX
, XXXX
Join Date: Jun 2010
Posts: 2,601
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shut offs were allowed inside in the 70's but not now. If you are replacing the propane lines leave them outside the trailer. Personally I don't intend to reinstall them in my trailer when I do the propane lines. More connections are more points that it can leak.
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12-18-2010, 01:35 PM
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#13
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Rivet Master
Commercial Member
Vintage Kin Owner
Naples
, Florida
Join Date: Dec 2005
Posts: 7,508
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Be certain when buying the copper tubing that you get 'Type K' or better tubing that is specifically rated for LPG use. Make sure that you don't get the refrigeration grade copper.
__________________
lewster
Solar Tech Energy Systems, Inc.
Victron Solar Components and Inverters, Zamp Solar Panels, LiFeBlue and Battle Born Lithium Batteries, Lifeline AGM Batteries
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12-18-2010, 02:15 PM
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#14
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Rivet Master
1974 31' Excella 500
Charleston
, South Carolina
Join Date: Nov 2010
Posts: 1,073
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Quote:
Originally Posted by lewster
Be certain when buying the copper tubing that you get 'Type K' or better tubing that is specifically rated for LPG use. Make sure that you don't get the refrigeration grade copper.
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Nice tip. Thanks.
I don't think that I can depend on the people who work at these stores to know anything about anything.. except when break time is..
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12-18-2010, 02:16 PM
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#15
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Rivet Master
1974 31' Excella 500
Charleston
, South Carolina
Join Date: Nov 2010
Posts: 1,073
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Quote:
Originally Posted by wasagachris
shut offs were allowed inside in the 70's but not now. If you are replacing the propane lines leave them outside the trailer. Personally I don't intend to reinstall them in my trailer when I do the propane lines. More connections are more points that it can leak.
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Right, but don't overlook the reason that they are there to begin with.. safety.
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12-18-2010, 03:36 PM
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#16
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Rivet Master
, Minnesota
Join Date: Aug 2003
Posts: 7,721
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Daniel, what safety reason?
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12-18-2010, 03:51 PM
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#17
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x
XXXX
, XXXX
Join Date: Jun 2010
Posts: 2,601
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Quote:
Originally Posted by markdoane
Daniel, what safety reason?
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exactly the valve body itself acn develop a leak and people tend to think they can shut off the valve and then remove the appliance leaving the lin uncapped and continue to use the propane system like that. All appliances have their own internal valves there is no need for in line shut offs.
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12-18-2010, 04:04 PM
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#18
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Rivet Master
1974 31' Excella 500
Charleston
, South Carolina
Join Date: Nov 2010
Posts: 1,073
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Hmm.. I don't know. Maybe they are there as some sort of convenience?
OK.. suppose you are out in the boonies somewhere and it is freezing cold and one of your gas connections to a non-vital appliance springs a leak. You can turn off the shut off valve to that appliance and still run, say, your furnace. In a case like this an internal shut off valve on a non-vital appliance will not come into play.
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12-18-2010, 08:34 PM
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#19
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Wise Elder
2010 30' Classic
Vintage Kin Owner
South of the river
, Minnesota
Join Date: Dec 2009
Posts: 4,169
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If being able to shut off an individual appliance and still use the rest of the propane system is a goal, then carrying a couple of flare caps is all you really need. Then you can shut off the tank valves, disconnect the problem appliance at the T, cap the T, open the tank valves, and be good to go.
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12-18-2010, 08:38 PM
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#20
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Rivet Master
1974 31' Excella 500
Charleston
, South Carolina
Join Date: Nov 2010
Posts: 1,073
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I'll put that in my notes and erase the cut off valves from my reinstall plan. Thanks!
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