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Old 11-02-2014, 05:47 PM   #15
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Smile OPD tanks with float gauge exist

Sam's club had them for sale in the BBQ aisle this summer...$39 as I remember. They may have a few leftovers on sale...made by Worthington or Manchester I think.

I'll report when I see how well they work and if they survive bumping along on the front A-frame...

They appear to use an internal magnet to connect to a loosely-fitted indicator clipped onto the base of the valve. No dual port in evidence--float appears to be part of valve.
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Old 11-03-2014, 02:11 PM   #16
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Hey everyone. Looking for some info pertaining to the effiiciency of LP when running the furnace and the fridge.
We plan on continuing to use our trailer through the early winter and early spring here in the NW.
I realize that outside ambient temps will make this difficult to estimate but how long can the furnace run on LP and how much does the frige use?
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Old 11-03-2014, 06:31 PM   #17
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Originally Posted by Althea68 View Post
Hey everyone. Looking for some info pertaining to the effiiciency of LP when running the furnace and the fridge.
We plan on continuing to use our trailer through the early winter and early spring here in the NW.
I realize that outside ambient temps will make this difficult to estimate but how long can the furnace run on LP and how much does the frige use?

The fridge doesn't use much. The furnace will suck it down. When we camp in temperatures around freezing at night, we use a 30 lb tank every 2-3 days. Obviously there are a lot of factors going into this, like the daytime temperatures. If you're going to be there a while, look into getting propane delivered in a 100lb tank.

You'll need a way to recharge your batteries, probably daily. I mention this because you said you wanted to use the fridge on propane, making me think shore power isn't available.
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Old 11-03-2014, 07:49 PM   #18
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I have the pointer/green,red changeover valves on both trailers. When one goes red I change the pointer to the tank that has become the supply, fill and turn on the tank that was empty, and go on enjoying life. In 14 years, have never had to switch tanks in the rain or when half way through cooking breakfast. What could be easier?


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Old 11-04-2014, 08:29 AM   #19
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You can figure out how long it will run on a tank. Find the total number of btu's per lb of propane and multiply by 30 if you have a 30 lb tank. Now divide by 30,000 and that should give you the total run time in hrs when the furnace is running.

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Old 01-03-2015, 11:47 AM   #20
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So just wanted to update following our New Years outing.
This is by no means the scientific approach many look for but more of a "how long will my propane last? Few days few hours?"
We spent 3 nights on the Oregon coast over New Years in lows down to high 20's and highs to very low 40's. I had 2 full 30lb propane tanks and we used 42 lbs of propane while cooking 2 meals a day and running the furnace 8-10 hours a night and the heat pump in the day as needed.
Overall I was pretty impressed at the efficiency of the furnace. It didn't run constantly and really kept us pretty warm at night.
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Old 01-03-2015, 12:22 PM   #21
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The fiber glass tanks are the only ones that are accurate because you can actually see the propane level. I have used them on my boat for many years and so far no problems and yes they are considerably lighter and do not rust. The gauge type gauges only really tell you the pressure of that tank and not the level of propane.
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Old 01-03-2015, 02:09 PM   #22
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Some tanks with built-in float type gauges do give a decent indication. The pressure type that screw into the valve are darn near useless, IMHO.


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Old 12-03-2017, 03:27 PM   #23
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Did you realize that you have an automatic switch over regulator on your Airstream?

On the regulator you will see a pointer on a round dial. That pointer points to the tank which is supplying propane. When that tank becomes empty, there is a green indicator which turns red and the propane is drawn from the other tank which is left on. You then turn the knob to point at the good tank and the indicator will turn green again. You can remove the empty tank and have it refiled without turning the gas off. When refilled, put it back in place and turn it on. Then when the second tank becomes empty, it will switch back to the first one, and on and on.

This can be a little confusing at first, but it works very well assuming you look now and then at the indicator to see if it is red and you are running on your second tank.
Can someone tell me the automatic part? Seems to me you still have to manually turn the pointer on the valve to point to the non-empty tank to continue to have propane.
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Old 12-03-2017, 07:39 PM   #24
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Nope. The valve will draw from the full tank even though the pointer indicates the empty tank. It comes in handy while you are cooking or it's the middle of the night and you are running the furnace.

When you discover the red indicator during your routine checks, flip the pointer over to the full tank, disconnect the empty at your leisure to have it refilled.
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Old 12-03-2017, 08:12 PM   #25
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Nope. The valve will draw from the full tank even though the pointer indicates the empty tank. It comes in handy while you are cooking or it's the middle of the night and you are running the furnace.

When you discover the red indicator during your routine checks, flip the pointer over to the full tank, disconnect the empty at your leisure to have it refilled.

So the color on the valve goes to red because it's now pointing to the empty tank, but you still have flow because the other tank is on (and full).

1) Do you have to move the lever to the full tank in order to be able to disconnect the empty tank?
2) I presume if you do move the lever to the full tank, the indicator will then go to green?
3) What happens if the lever is pointed halfway between the tanks?
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Old 12-03-2017, 08:53 PM   #26
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So the color on the valve goes to red because it's now pointing to the empty tank, but you still have flow because the other tank is on (and full).



1) Do you have to move the lever to the full tank in order to be able to disconnect the empty tank?

2) I presume if you do move the lever to the full tank, the indicator will then go to green?

3) What happens if the lever is pointed halfway between the tanks?


1) I always switch to the other tank before disconnection but I donít know that it matters.

2) yes, it will turn green.

3) The gauge will not work and you will end up draining both tanks. No reason to split the difference
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Old 12-10-2017, 09:28 AM   #27
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I just use one tank at a time until empty, then open the valve on the full tank and refill the other. This works for me, in the past I have tried using hot water to judge the fuel level in the tank but I find one tank at at time is easy for me.
I open one tank at a time also and fill when I get empty or near empty. It has only fooled me once at the hunting camp when I woke up in a warm sleeping bag and 20 degrees inside. The door of the Airstream was frozen shut so I had to get one of my fellow hunters to open the other valve and wait 20 min. for the inside to warm up. I usually run a Portable Buddy but let one of the other guys use it for the night. I've since changed to an Olympic Wave 6 that got a workout this weekend in 20 degree weather.
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