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Old 12-18-2010, 03:16 PM   #15
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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.
Right, but don't overlook the reason that they are there to begin with.. safety.
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Old 12-18-2010, 04:36 PM   #16
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Daniel, what safety reason?
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Old 12-18-2010, 04:51 PM   #17
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Daniel, what safety reason?
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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Old 12-18-2010, 05:04 PM   #18
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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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Old 12-18-2010, 09:34 PM   #19
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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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Old 12-18-2010, 09:38 PM   #20
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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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Old 12-19-2010, 07:55 AM   #21
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I'll add that it's pretty unusual for appliances, except maybe the range, to develop leaks upstream of the valve that can't be repaired in the field.

The range is the worst in this regard because of the larger number of valves and fittings and the difficulty of access.

The other appliances have only one fitting upstream of the gas valve. It's pretty rare for the gas valves on these to leak when turned off.
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Old 12-19-2010, 08:08 AM   #22
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Another trick if your copper has sat around and is not soft but alittle hard is to heat it with a plumbers torch for makeing bends or for flareing the ends. I used to be in heating and air cond and some times refrigeration and a swaged the ends so one end would slip into the other and even on strait sticks of copper alittle heat goes along way.

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Old 12-19-2010, 01:19 PM   #23
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alittle heat goes along way.
Wally
yeah, that's the first thing that I'd think to do if I had a propane leak.. get in there and fire up a torch.. ha ha.. lol.. (just playin)
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Old 12-19-2010, 04:34 PM   #24
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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.
well..thats the only way to shut off the pilot on my original (1973) furnace.
I guess new ones probably don't even have pilots, right?

I can't recall at the moment if my stove has one inside the trailer. I know the cat heater's is outside. I think fridge, too...but neither of those is oem.
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Old 01-14-2011, 03:40 PM   #25
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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.

OK.... I am also repiping my propane system in an 58' AS.

This then means that you have to 'T' outside for each appliance? and go through the floor for each appliance? In this case is there no separate shut-off valve for each appliance except for the main valve at the tanks?
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Old 01-14-2011, 03:41 PM   #26
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OK.... I am also repiping my propane system in an 58' AS.

This then means that you have to 'T' outside for each appliance? and go through the floor for each appliance? In this case is there no separate shut-off valve for each appliance except for the main valve at the tanks?
Absolutely correct.

Andy
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Old 01-14-2011, 03:51 PM   #27
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Airdoxy you can install your own shut offs to each appliance after the tee's if you like as long as they remain outside the trailer. IMO they are redundant as each new appliance has it's own gas valve to stop the flow of propane. I am redoing my propane system without shut offs. They are just more connections and a possible source of leaks.
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Old 01-14-2011, 06:21 PM   #28
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Look for specs on the box.

If you buy it in 25' rolls from Home Depot or Lowes; the box it comes in will tell you what it is rated for. Use 1/2" for the main trunk line, then size each of the branch lines for the particular appliance it feeds.
It is my understanding that todays code calls for double flare fittings. I'm not sure if you are required to meet that standard on the older rigs. Most I've seen have single flare fittings on the appliances.

Chuck: I believe your furnace has a shut off to the pilot; that is the reason you have to hold the button in when you light the pilot. To overide the safety; which is the shut off valve for the pilot. Once the pilot is lit the thermocoupele monitors the pilot flame; if the pilot goes out the valve closes, wah lah no gas. Now if you have a standing pilot on your cook top there is no safety circuit, the oven will have a thermocouple since it is an enclosed space.
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