Hello, I am "resurrecting" a late 1979 Espada series III for a friend... One of the things I need to do, while the dash and windshield is out...is to get the air conditioning...cooling again.. I had to deal with a design flaw, namely, inadequate blower motor rubber supports, causing the motor and squirrel fans to rattle within the fan housing... That was quite the adventure... I will document the steps, and the solutions in another thread... I am sure other series 3 Espada owners have this issue.....or soon will... A decision was made to convert this car from R12, to R134. There were lots of sludge, and most likely not working for many years.... Most of the components are popular parts used on other cars.. The compressor ( (Ford Tecumseh) , drier (Four Season generic), and hoses (re made by Hose Man) easily sourced..... One part that has slowed down the progress, is the expansion valve... The original valve is a Egelhof "LS" with 1/2 flare, and 5/8 flare with 37 degree seating. I believe this to be JIC specifications...? I have done an exhaustive internet search, and no Egelhof source....or substitute.... I could use a generic expansion valve with normal SAE 45 degree flare...but I just had hoses made using the original ends. Argh... ..Before going to the effort of adapters... Anybody have experience in converting from R12, to R134? What expansion valve did you use? Do you have a part number for a substitute part? Thanks in advance Paul .