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Old 01-15-2020, 01:07 AM   #1
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Propane Tank Gage ?

Hi folks - quick question. I have a large external propane tank connected to my belly tank through the fill valve.

The problem is, my external tank does not have a gage. So when the propane guy comes by and fills it he never fills it to 80%.

There is no boss on the tank for a gage. Does anyone know if you can add one to it?
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Old 01-15-2020, 07:43 AM   #2
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How do you know he doesn't fill it to 80%.

He should be opening the bleeder and waiting until liquid propane spits out. That's how he would know to stop, and its at 80%.

How is he filling it ?

Connecting to your onboard fill valve, with your jumper hose, will not fill that tank. It will always be empty. You are only sending vapor over to it.
Any liquid propane would have been used up before the vapor from the outside tank would move to the mounted tank.

The delivery guy would need to fill your mounted tank thru the mounted tanks fill valve to top it off.
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Old 01-15-2020, 09:13 AM   #3
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Quote:
Originally Posted by twinboat View Post
How do you know he doesn't fill it to 80%.

He should be opening the bleeder and waiting until liquid propane spits out. That's how he would know to stop, and its at 80%.

How is he filling it ?

Connecting to your onboard fill valve, with your jumper hose, will not fill that tank. It will always be empty. You are only sending vapor over to it.
Any liquid propane would have been used up before the vapor from the outside tank would move to the mounted tank.

The delivery guy would need to fill your mounted tank thru the mounted tanks fill valve to top it off.

Agree^^, no gauge is needed. The bleeder valve is what determines the fill of the tank. Next time, ask you propane man.
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Old 01-15-2020, 11:31 AM   #4
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Quote:
Originally Posted by twinboat View Post
How do you know he doesn't fill it to 80%.

He should be opening the bleeder and waiting until liquid propane spits out. That's how he would know to stop, and its at 80%.

How is he filling it ?

Connecting to your onboard fill valve, with your jumper hose, will not fill that tank. It will always be empty. You are only sending vapor over to it.
Any liquid propane would have been used up before the vapor from the outside tank would move to the mounted tank.

The delivery guy would need to fill your mounted tank thru the mounted tanks fill valve to top it off.
Both tanks are filled independently. I assume he's opening the bleeder but what I always see is wildly varying fill levels and bills. One time the tanks were empty and the bill for filling was way too low. The gage on the belly tank was not showing full. I called, they came out again, and got more then $150 in the tanks - after being filled 2 days earlier. That brought the bill up to where it should be.

On the most recent 'fill' within days the internal gage was showing I was already down 1/3. There is no other propane company to go to. Hence the question, can I put a fill gage on the external tank even though there is not boss for it. I'm trying to come up with a way to make it idiot proof....
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Old 01-15-2020, 11:43 AM   #5
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Is it just me? Most stations I've frequented lately don't even open the tank fill level bleeder valve anymore. They just fill until it shuts off automatically. Makes me kind of nervous, but I think rightfully so.
An overfill situation is not a good thing IMHO. I once had to attend a safety class to be "certified" to fill our forklift tanks. In the training video was the aftermath of a tank that exploded while filling. (older non opd type) They found the guys head several yards away.
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Old 01-15-2020, 12:57 PM   #6
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Dounds like your filling guys are not to good at their job.

Here you go.

https://www.pplmotorhomes.com/parts/...vel-indicators
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Old 01-15-2020, 08:42 PM   #7
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Have you looked your whole tank over? My 07 Neptune was like yours, I thought man it would be nice to have a huge other than the 1/3, 2/3, full gauge inside. I rolled around one day on the creeper under the coach and low and behold on the tank in the back is a gauge. Not sure what Monaco was thinking putting a gauge on the back, but I guess at least it has one. May want to look yours over, you may have one as well!!

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Old 01-15-2020, 09:24 PM   #8
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Have you looked your whole tank over? My 07 Neptune was like yours, I thought man it would be nice to have a huge other than the 1/3, 2/3, full gauge inside. I rolled around one day on the creeper under the coach and low and behold on the tank in the back is a gauge. Not sure what Monaco was thinking putting a gauge on the back, but I guess at least it has one. May want to look yours over, you may have one as well!!

Chad
He's talking about an external propane tank, not the one on the chassis.
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Old 01-15-2020, 09:34 PM   #9
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Check the temperature of the tank wall

There will be a difference between the liquid and vapor at the interface

It will be close enough to give you a very good idea of the liquid level
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Old 01-15-2020, 10:08 PM   #10
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I can determine it no problem but the guy who fills is in a rush so it's not like he can take time with it. I'm guessing I may have to live with it or replace the tank. Problem is, those tanks up here are about $1,000

There may not be a solution and I might just have to live with it for the winter.

If I'm lucky I'll get the guy he hires from time to time. He knows how to fill it. The bills are always high and it runs for a long time on that first third of the inside gage.
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Old 01-16-2020, 06:09 AM   #11
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Quote:
Originally Posted by twinboat View Post
He's talking about an external propane tank, not the one on the chassis.
Wow, not sure how I missed that, guess I read too fast and not pay attention, ADHD kicking in.

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