What sort of gas is this?

Wollfen

Old Man with a Hat
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I have had this bottle of gas in the garage since I bought the place and I am wondering what it is for? Any ideas?

Gas bottle.jpg
 
It was used in commercial refrigeration units, R22. I believe it has been phased out like the R12 in cars.
 
This was widely used in commercial freezer units and some heat pumps. It is a "low temp" gas that works well for maintaining freezing temps in large freezer plants. It was also used in transport refrigeration units. Was also widely used in heat pumps in cold climate areas because it was a dense gas that would maintain enough volume for the unit to keep operating when ambient temps got below freezing. Most R-12 systems would shut down at about 10 degrees below freezing. If your house has a heat pump, someone may have bought it "just in case" so they would have it if the system ever needed a recharge. R-22 has now been phased out.

Dave
 
I believe that both my house and RV a/c units use R-22. Are you going to Carlisle? Any idea how much is left in the "bottle"?
 
I believe that both my house and RV a/c units use R-22. Are you going to Carlisle? Any idea how much is left in the "bottle"?

The containers were shipped with 30lbs of gas in them, The empty weighs about 3-3.5 lbs, depending on when it was made. You can weigh the container to determine the amount of gas left. The old school way to charge a system was to place the container on a small scales and install gas into the system until the proper amount of gas was put in. This was on systems that had been evacuated first.

Dave
 
That's cool, the bottle is pretty heavy and the nozzle is still covered in a plastic sheath with the manufacturers name on it, i am thinking it is a full bottle or close to it. I have an old AC system connected to the second house here that I am thinking of selling, 35 000 BTU's. Still pumps air and both motors operate, though the cooling isn't much chop. Probably needs a gas top up. I was hoping this bottle of gas could do it.
 
That's cool, the bottle is pretty heavy and the nozzle is still covered in a plastic sheath with the manufacturers name on it, i am thinking it is a full bottle or close to it. I have an old AC system connected to the second house here that I am thinking of selling, 35 000 BTU's. Still pumps air and both motors operate, though the cooling isn't much chop. Probably needs a gas top up. I was hoping this bottle of gas could do it.

Some place on the unit, usually on the outer case, it will give what gas is in the system, it will usually be with the model number etc, on the manufacturer tag. This tag will also give in lbs. what the charge should be when the unit is fully charged. Be absolutely sure you have the right gas as adding R-22 to and R-12 system will destroy it. Check the grid on the evaporator/condenser to be sure that it is not clogged with leaves, cotton wood fibers, etc. A lot of times a unit that heats but does not cool has a bunch of crud in the outer unit. There is a two way valve that converts the outside evaporator to a condenser when the unit is called upon to cool. These two way valves are known to stick, so have the unit properly diagnosed to be sure it is actually low on refrigerant and does not have a valving issue.

Dave
 
Gotta be careful. All this so called grey market "real" R12, R22, et all stuff, is watered down crap from Mexico.
You need a digital scale reading out to three decimals to weigh the cannister to ascertain what is really inside it.
 
Gotta be careful. All this so called grey market "real" R12, R22, et all stuff, is watered down crap from Mexico.
You need a digital scale reading out to three decimals to weigh the cannister to ascertain what is really inside it.
I checked, mine weighs 15lbs all up, so it is definitely partially used.
 
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