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Old 12-19-2011, 06:00 PM   #1
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Gauging amount of propane in tanks

I have two tanks on my 2009 Flying Cloud 25FB and, because it is necessary to spend quite a bit of time in it this winter, thus running furnace a lot, I am wondering how one tells how much propane is actually left. Are there any "tricks" that anyone has learned, short of actually running out of gas? Thanks in advance!

Jack
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Old 12-19-2011, 06:08 PM   #2
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In the winter you can pour hot water on the tank and the fluid line will show up instantly. As soon as you empty a tank go fill it and you will never be empty.
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Old 12-19-2011, 06:23 PM   #3
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A dual gauge would be a good idea. However, we took on 25 gallons when we were north on Oct 14th and fueled again with 20 gallons on December 5th. Granted, we have electric where we stay, so the propane use was for our hot water heater, range and furnace, not the fridge. We run the gen-set on propane, but have not used it much other than to exercise it. Hope that helps.
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Old 12-19-2011, 06:27 PM   #4
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Pour a pint of very hot water down the side of the tank. Run your hand down it, you will feel the hot vs. cold line. That is the liquid level in the tank.
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Old 12-19-2011, 08:20 PM   #5
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There is a small device that will give you visual indication inside the TT of when the switchover happens. The sender part replaces the clear little cap on your regulator, and a thin wire runs into your cabin where a small (~1" square) black box screws to the wall.

When the changeover happens, an LED (powered by a AAA cell) blinks.

Go pull the empty tank and put it in the truck. Done.
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Old 12-19-2011, 09:51 PM   #6
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There is a small device that will give you visual indication inside the TT of when the switchover happens. The sender part replaces the clear little cap on your regulator, and a thin wire runs into your cabin where a small (~1" square) black box screws to the wall.

When the changeover happens, an LED (powered by a AAA cell) blinks.

Go pull the empty tank and put it in the trunk. Done.
Just make "SUPER SURE" that the tank is indeed empty, especially in the summer, should you put it in the trunk.

Heat makes the LPG expand, and when it expands enough, the pop off valve will blow off some of the excess pressure.

THAT IS NOT WHAT YOU WANT TO HAPPEN especially in a trunk, since more than likely an explosion will occur.

Andy
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Old 12-19-2011, 10:24 PM   #7
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Why don't you just use the switch over feature on your propane tank setup? I mean, going out and pouring water on the tanks during the cold sounds like a lot of trouble to me. Fill both tanks and open both valves. Keep your eye on the glass indicator and when it turns red take the bottle that the valve is pointing toward in and refill it. Don't forget to turn the switch toward the reserve tank before you remove the empty bottle. You can get a feel for how long a tank will last this way.

No water, no guessing, no hassle.
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Old 12-20-2011, 05:17 AM   #8
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I read somewhere that when an LPG tank empties, the propane system will begin drawing from the other even though the switch has not been moved over the the fresh tank. True?
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Old 12-20-2011, 05:42 AM   #9
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No real tricks...

The panel monitors have proved fairly accurate and we have always opened both valves to take advantage of the auto switch-over feature of the regulator. When the panel indicates low just check the tank window for the red indicator and fill when needed.

Bob
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Old 12-20-2011, 06:16 AM   #10
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I read somewhere that when an LPG tank empties, the propane system will begin drawing from the other even though the switch has not been moved over the the fresh tank. True?
It draws from the tank that the arrow is pointing to, until that tank runs out of LP. Then it automatically switches over to the full tank provided that you have opened the valves on both tanks. Then when it has switched tanks and one is empty, the window in the regulator turns red to signify that the tank that the arrow is pointing to is empty. Switch the arrow to point to the full tank, and remove the empty tank and get it filled. Replace it and open the valve and you are good to go again.
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Old 12-20-2011, 06:21 AM   #11
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My obsolete tanks have a gage on them. If I have them upgraded to make them legal to fill then I will have to remove them and put the newer valves on that won't have gages. Progress is wonderful. There maybe new approved valves that have gages. Andy might be able to chime in here. So Andy are there new valves with gages on them? The hot water trick should work.

Perry
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Old 12-20-2011, 06:52 AM   #12
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Why don't you just use the switch over feature on your propane tank setup? I mean, going out and pouring water on the tanks during the cold sounds like a lot of trouble to me. Fill both tanks and open both valves. Keep your eye on the glass indicator and when it turns red take the bottle that the valve is pointing toward in and refill it. Don't forget to turn the switch toward the reserve tank before you remove the empty bottle. You can get a feel for how long a tank will last this way.

No water, no guessing, no hassle.
This is what I do.
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Old 12-20-2011, 06:53 AM   #13
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I wondered what that glass indicator was that is now fogged up on mine.

Perry
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Old 12-20-2011, 07:19 AM   #14
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In situations like the one the OP posted - I would have a 3rd tank full at my camp site. This way WHEN (not IF) I ran out of propane in the middle of the night in a snow storm, I would have fuel to get through the night. The tank I rotate to get fuel would not be that critical in my living needs. BTW - When the weather turns bad the availability of propane becomes a problem - nobody seems to be open.
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