Servicing R12
Thread Starter
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
Servicing R12
Question about the adaptor that punctures the top of the R12 can. Been long time since I used a can of R12. The top of can is basically flat metal where it gets punctured. The bottom of the valve assembly where the needle comes out is also flat. This is a metal to metal contact as I can see looking at my cans and the adaptor. There is no rubber seal that I can see that will prevent the Freon from leaking at the mating surface once the can is punctured.
Am I missing a piece, or a seal, or is this just the way it should be?
I just can't remember it being such a crude setup.
Am I missing a piece, or a seal, or is this just the way it should be?
I just can't remember it being such a crude setup.
Le Mans Master
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
Question about the adaptor that punctures the top of the R12 can. Been long time since I used a can of R12. The top of can is basically flat metal where it gets punctured. The bottom of the valve assembly where the needle comes out is also flat. This is a metal to metal contact as I can see looking at my cans and the adaptor. There is no rubber seal that I can see that will prevent the Freon from leaking at the mating surface once the can is punctured.
Am I missing a piece, or a seal, or is this just the way it should be?
I just can't remember it being such a crude setup.
Am I missing a piece, or a seal, or is this just the way it should be?
I just can't remember it being such a crude setup.
Melting Slicks
Joined: Aug 2008
Posts: 2,082
Likes: 50
From: Palmdale CA
There should be a rubber seal between the threaded shut off valve, and the top of the 14oz can. the seals are Square rings, and press inside of the tap just outside of the puncture needle. I believe it might be the same seal used in the service hose's. I picked up a set of these at the local HVAC supplier.
Thread Starter
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
Thanks for the information. Had a couple of 30 lbs partially filled cans for the last 10+ years so never used the small cans in a long time.
I have a couple boxes and places where the adapter has been living for a very long time and now that I kind of know what I am looking for, maybe I'll get lucky and find it.
I have a couple boxes and places where the adapter has been living for a very long time and now that I kind of know what I am looking for, maybe I'll get lucky and find it.
