Yeah, they used to be popular on mobile homes and pre charged linesets. I've always called them "quick connects"

 

They still are popular on mobile homes. I install 80-100 a year for local mobile home sales lots. They are called quick connect fittings. Not much to them, it is really just a brass to brass fitting inside the coupling. Sort of a flare. When installed properly they are very reliable.

This fittings allow us to install the a-coil , lineset and condenser with out any soldering or having to pull a vacuum. Each peice is pre charged and the fitting open when screwed together.

 

we get them all the time with pre-charged line sets, lots of different manufacturers use them

 

The only thing to make them better would be to modify the connection point on the outdoor unit to allow a pump down in the event the A-coil needs replaced. :.02:

 

The Nordyne and the York lines ( Colman , vexar, revolv ) are all micro channel condensers and couldn't be pumped down anyway.

 

The OP is talking about something different than everyone else

For some reason some mobile home units have quick connected SERVICE fittings. Not the Aeroquip lineset connections, but quick connect fitting on the unit for connecting service equipment. You have to use the shraeder fittings on the lineset to connect your gauges

I have never seen any tools that fit these fittings so I assume its for factory use only.

 

Thanks. I have never used the pre-charged lineset, but afterlooking, I assumed that is what it was. But beside that, it had quick disconnect service fittings similar to automotive R134a fittings. I didn't know if anyone has ran into a situation where this was the only means of servicing. If this is typical of mobile home units, I guess I haven't serviced many mobile homes!