PNWjeeper

So when converting my Jeeps ac to r134a a few years back the low pressure port broke off due to someone stupidity. It was able to keep the charge and not vent refrigerant for about two years, the jeep doesn't get used much so that's just an estimate. I'm planing on having new lines put in but I still need a new port but I can't find it or a name for it anywhere can some one name it for me?

New ac compressors don't have this part and the ac hoses don't either otherwise I'd just do one of them. I'd look in a junk yard but they charge $10 just to go in and have next to NO list of inventory.

90 jeep xj 4.0

missedbass

suction service valve

missedbass

good old R12

PNWjeeper

Awesome thank you!
Now the search to see if anyone actually sells that part.

4.3L XJ

That is a king valve. It is used on older systems to shut off the compressor from the rest of the system, and in our case, the schrader valve too. You need to crack the valve open when you charge or hook up gauges

Rambler65

As far as I know AMC used these service valves on all of their vehicles from the 1954 Nash (first car with modern integrated AC system under the hood) until the end.


(Note the 1 review of this part says "Jeep compressor fitting".)

PNWjeeper

I like that the access is on top instead of on the side. Thank you guys I've been searching on and off for this part for the better part of two years never making head way.

4.3L XJ

Fords used them too

Rambler65

A lot of older cars had those. They probably date to a time when there weren't schrader valves with refrigerant seals available. AMC always had a tendency to hold onto older tech longer than the other manufacturers though.

00t444e

I wish the new stuff still had those, it would make it easier to change the compressor.

4.3L XJ

I don't. They are a PITA. Wait until you get one stuck and the little stem twists off. Those date back to the time when you loaded all the refrigerant into the compressor crank case, installed the compressor, sucked it down and opened the valve and you were done.

00t444e

They use those valves on commercial refrigeration equipment, it makes thinks much easier. I have only had a couple of them get stuck.

4.3L XJ

I have never had a problem with them on commercial apps. However there are environmental differences under the hood of a Jeep that are not just typical outdoors

missedbass

Not to split hairs but a king valve is located on the outlet of a receiver on the liquid line. Valves on the compressor are either suction or discharge service valves.The king valve comes in handy on larger commercial systems to isolate part of the system or store the charge. No disrespect intended lol

Oswalla

I have some links for these and they are called a few different names over the years. Jeep calls them service valves. Ford calls them Rotolock. Rambler posted one I had looked at in the past.

http://www.acpartsguys.com/service_valves

https://jeepair.com/

http://thepartguy.com/ac-hosesMustangCougar.html

http://www.drakeautomotivegroup.com/...A.aspx?wid=141