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Old 01-24-2016, 11:53 AM   #1
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1982 31' Airstream 310
champaign , Illinois
Join Date: Jun 2013
Posts: 3,026
'82 310 propane filler valve

I may need to replace my propane fill valve. The number on the valve is 7547D by Rego. I am striking out on my search for a valve matching that number. What I find is that the valves are pretty standard with a mip fitting to thread into the tank. As you can see in the picture, the valve thats on there is a bit different, almost looks like a union type fitting. Have any of you replaced your filler valve on a Classic MH and if you have what did you use? This looks a little oddball when comparing to those Ive found in my search. Maybe Im just not seeing it correctly. But, it just doesnt look like others....

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This is what Ive found in my searching, a mip fitting to attach to the tank

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Old 01-25-2016, 10:41 AM   #2
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1982 31' Airstream 310
champaign , Illinois
Join Date: Jun 2013
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So here is what happened. On our way back into town after our trip west, I stopped to top off diesel and propane so we are ready to go. When they tried to fill the propane, it kept leaking and dripping out of the fill valve. They stopped and said that they couldnt fill it. The tank was 3/4 + full but I wanted to top it off all the way. When I got home I inspected the valve and saw that there is a rubber washer inside the throat of the valve. I pulled it out and took a look, found that it did have some obvious wear but no cracks or splits. Looked all over the internet to find a replacement and finally found the right size and ordered a couple replacements.

Now I have used that fill station many times and have had no problems but the folks that fill the tank are pump jockeys and have no technical training in the parts of the fill valve. Soooooooooooo, Im going to use up some propane before I take it back to another fill station and see what happens. But in the mean time I thought Id look for a new fill valve just in case, they are pretty inexpensive.....$20-$30. Got the numbers of the valve and have searched and searched but cant find a reference to a replacement.

I might not even need one, could have been operator error by the fella trying to fill the tank. Maybe I had too much propane left in the tank and the OPD would not let it fill any more. Not sure. But.....Id like to have a replacement fill valve located just in case mine IS bad.

Apparently they dont go bad very often, havent had any responses to my original post so maybe nobody has had to deal with it. Anyway, if anyone has any info regarding their fill valve I appreciate any guidance.

Once I use up some propane and get it down to a half tank or so Ill go try and get it filled again. It may be there isnt any problem at all but the folks at the fill station were in error.

I did take a screw driver and pressed on the spring loaded check valve down in the throat of the valve and it released a powerful shot of gas. I guess it could have been frozen also and the fill pressure wasnt enough to push the check valve in.

It would be nice to have a replacement in mind though, just in case the fill valve is bad.

An exploded view of how the valve system works would be handy.

Thank you guys for any info on these

hope all you southern and east coasters are safe and sound after that big ol snow storm!!!!!

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Old 01-25-2016, 07:49 PM   #3
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2010 30' Classic
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South of the river , Minnesota
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Posts: 4,129
Hi Mike

Judging solely from the photos I think you'll find your fill adapter is just a slight oddity with a female pipe thread rather than male. A couple of cautions however.

First of all, these connectors are designed to be repaired without having to be removed, and you are probably best served by having a propane dealer fix it. It is possible that you'll just damage things further trying to get the existing fitting off, since they can stick badly.

Second, bulk liquid propane is scary stuff. Even an "empty" tank can be dangerous. I do lots of repairs that aren't considered do-it-yourself repairs, but there's no way I would touch a bulk fill valve.
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Old 01-26-2016, 05:24 AM   #4
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1982 31' Airstream 310
champaign , Illinois
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Thanks Jammer, Im thinking the same thing. Ill take it to a fill station again and see if it happens again. If it leaks I think I should take it to a propane distributor and have them look at it. I think you are right on all accounts.
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Old 01-31-2016, 07:38 AM   #5
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1983 31' Airstream310
Hillsburgh , Ontario
Join Date: Sep 2012
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Sorry Mike. I was going to post about my valve replacement but it was for the outlet, not fill side.

Since its like diffusing a Grand Slam bomb, even empty, I would recommend you have a crazy bloke do it, far away from a residential area, with you standing a far ways back.

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Old 01-31-2016, 08:11 AM   #6
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1982 31' Airstream 310
champaign , Illinois
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Thanks Tony. I agree. The more Ive read about it, the more Im convinced that I need to let a specialist deal with it. Once I use up about a half tank Ill try and get it filled again and see what happens. I did replace the rubber washer/gasket/seal just inside the throat of the valve. Maybe the old one was worn enough that it was leaking. We'll see. Just like everything else on these rigs the fill valve on the rig now is somewhat of an oddity.


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