Re: Today's Packard Mystery - Rear Defroster

Posted by HH56 On 2016/2/1 15:54:31

If it is actually a barb fitting and you changed it then yes. Can't recall ever seeing a barbed expansion valve. Flares were the norm and am almost positive any modern expansion valve will not easily be found in barbed. Flare and O ring are the most likely found today. The suction side is most likely flared too -- typically would be a # 10 size but since it is a rear unit with a long run it could be #12. If it is barbed then with your new plumbing it would be the only connection left like that. I would use the correct size barrier hose and make sure it is properly clamped -- maybe even double clamped and see how it held before worrying about changing it.