Quoted from Bentley 87.15 A/C adaptor valve VAG 1637,
installing:
"Beginning in May 1988 the threaded connection on the
AC high pressure service valve was changed from
7/16"-20 UNF to 3/8"-24 UNF. Use special adaptor VAG
1637 when making a connection to the high pressure
service valve."  Can someone tell me where I can
locate one of these adaptor valves?  A quick google
for VAG 1637 and/or the conversion sizes came up with
nothing.

Thanks,
Todd
90 Syncro Westy

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