Posted by Byron R. Elley on May 06, 19100 at 16:47:56: via: ahdialup240.phnx.uswest.net or 63.225.197.240
In Reply to: R134 couplings posted by david on May 06, 19100 at 13:45:33:
The couplings you are refering to are called manual couplers they enable them to be connected & disconnected before even getting pressure through. they have auto couplers but I recommend you stay with manual couplers. The auto couplers tend to stick and god forbid you have a valve core stay open!