Bill ;

Those valves have two different size hose nipples to prevent mixing up the hoses .

I'm sure this was a boon in the assembly plant but when working on older beaters this means it's no simple thing to by pass a leaky heater core .

The good news is : these valves are available new in cable and vacuum controlled configurations making them ideal for replacing the EVIL SERVO FROM HELL on Klima I equipped cars....

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better