R-134 auto in stationary application

[rickd]

R-134A Auto is apparently approved for both Polyalkylene Gycol and Polyol Ester lubricants. Anybody know why it isn't supposed to be used in stationary applications?
Can't identify any difference in in properties or contents from any of the available Dupont tech sheets.

[taz24]

R-134A Auto is apparently approved for both Polyalkylene Gycol and Polyol Ester lubricants. Anybody know why it isn't supposed to be used in stationary applications?
Can't identify any difference in in properties or contents from any of the available Dupont tech sheets.

Hello.

I'm a bit confused with the R134a auto bit.
R134a is a common refrigerant that is used in countless types of domestic and commercial refrigeration systems.

What is R134a Auto? I have not heard of it.
Are you confusing the fact that 134a can be used in cars and other mobile applications?

I may be wronge but I thought R134a was just R134a and it is used in mobile and static applications.

Cheers taz.

[Electrocoolman]

Is it R134a with dye in it?

[rickd]

When it does include a dye, the makers seem to make a big deal out of it. What I usually see in the 12 oz. cans does not have dye.
I thought it probably was some minor difference to accomodate the PAG usually found in mobile (auto) applications, but what actual data readily available doesn't reflect this. The current listings for R134A "Auto" show both lubricants.

[taz24]

Is it R134a with dye in it?

Oh right.

Thankyou.

taz.

[rickd]

This is a link to a photobucket scan of the Grainger catalog page showing both. : //i202.photobucket.com/albums/aa75/rick****mann/temp/refpage1.
Of course, the concern is using anything that might aggravate cap tube clogging.
just add the http to the front and jpg to the end. Hope that works.

[rickd]

Well, Looks like the forum has some very agressive software running to insure no one posts any nasty words. It replaced the first four letters of my last name with asterisks. Substitute delta, ida, charlie, kilo for the asterisks.

[rickd]

Followup: emailed this question to Dupont and received a phone call with the explaination that the 134A mobil tanks have the unique fitting to prevent accidental mixup with other refrigerants used in autos. The refrigerant itself is the same. There is 134a available with a UV dye used for leakchecking and should not be used in cap tube applications. The dyed refrigerant is usually found in the 12 oz. cans. This might explain some of the cap tube clog problems (although not all). Also there is a pharmacy grade 134A that is quite a bit more expensive, was assured we would probably not run across any of that. Hope some others find this information useful.