These tanks are a thin wall design....so its possible..just I haven't heard about them. (And no I am not an A/C pro ). Need to ask a coworker, to ask his son who is an HVAC guy how hard it would be to find one..never saw one on Ebay. Could get around a non functional valve like he appears to have.

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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

I did some internet searching myself, and came across nothing. The tank is kind of robust. If I had to guess its 1/16" thick.

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1984 300D / The only Benz I have

Completed weekend projects

1. R/R front crankshaft seal
2. R/R nearly the whole vacuum system
3. Converted to WVO www.greasemachine.com
4. Upgraded to electric power locks
5. Upgraded and rewired stereo/amp/speakers
6. Installed 2.88 differential

I assume that you had the hose connected? There may be something like a valve core in the outlet.

Stupidity paid off!!!

Using a flash light looking in the valve I could see what looked like it was the seat of the valve.
It wouldn’t move when I twisted the knob. I took a pick, cracked the valve and started to pry it up.
It released sprayed ice cold Freon all over my hand and scared the crap out of me, but I got it open!!!

Thanks for the help as always.

__________________
1984 300D / The only Benz I have

Completed weekend projects

1. R/R front crankshaft seal
2. R/R nearly the whole vacuum system
3. Converted to WVO www.greasemachine.com
4. Upgraded to electric power locks
5. Upgraded and rewired stereo/amp/speakers
6. Installed 2.88 differential

Glad it worked its self out....

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

The 30 lb tank is a "DOT 69" spec tank. The green valve means its a one way valve.(Cant reuse it) If there is nothing coming out then one of 2 things is true. Either the valve is malfunctioning or there is NOT refrigerant in the tank. My vote is the valve has gone bad. If that is the case then just throw the tank away. There is no way to get the refrigerant out then.

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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair