View Full Version : OT- SwageLock Fittings

03-13-2014, 06:04 PM
Q? Any reason not to use SwageLock compression tube
fittings on my home A/C heat pump fittings?
I have a tight corner and I need two 90 deg fittings in 3/8"
and 5/8". I could re-flare and use compression elbows,
but I just hate the quality of the flares that I get with my
flaring tool (an older Craftsman). If so, for use with the
copper line-set, would you get brass elbows or SS elbows?
I would likely look for them on ebay. Thanks for your
experience / opinions on this.


03-13-2014, 06:13 PM
The 5/8 Swagelock is rated for 1000+ psi, so that shouldn't be a problem. I thought Swagelock only came in stainless (okay, I've only seen them in stainless) so that would make that point moot. But why not standard compression fittings? Compression and flare fittings are different. I can understand your desire not to have to flare the tubing, but I have never had problems with using compression fittings.

Jon Heron
03-13-2014, 07:11 PM
Silver solder and copper refer fittings is the standard for refer lines, though brass, stainless, aluminum etc can also be used. SwageLok will certainly work but they are pretty spendy and overkill.

03-13-2014, 07:42 PM
I did some time in a nuclear power plant and we used Swagelock exclusively. If you are using copper tubing, use brass fittings.

03-13-2014, 09:06 PM
If you need to do flaring get a genuine Ridgid flaring tool with the cone mounted on a bearing. Beautiful tool, perfect leak free flare ever time, even on stainless tubing.

03-14-2014, 03:04 PM
Swagelock is the cat's meow. No tools except a tubing cutter and a couple of wrenches. Can be disconnected and reconnected as needed without worry about the fitting leaking. Kind of spendy, but they work.


03-14-2014, 03:08 PM
Swagelock; pretty and expensive. Don't neglect the never-seize on stainless, it's a mistake you won't make twice.
I've tried to use the cheaper offshore knock offs, every single one leaked. Sure saved myself a lot of money :P

03-14-2014, 03:59 PM
Thanks guys.
I just got in my 30,000 btu Mitsubishi A/C and heat punp
system. It is for my shop. I wanted some 90deg elbows
where the lines run down the outside wall. Neater than
making large radius bends in the copper. I got some of
the Swegelock fittings on ebay at a pretty good deal.
They will make for a nicer install, and I can remove
the wall unit easier in case I need to. That would be
kinda difficult to do with the lines bent at a 90 on the
other side of the wall. I know copper will bend, but I
hate to bend it too much, so these fittings make things
tidy all the way around. Thanks for the replies. And
I might look into a good Rigid flare tool set just to have
on hand.

03-14-2014, 04:08 PM
Swagelok comes in steel, stainless, brass, and aluminum. They work well from ultra high vacuum to high pressure. The stainless nuts are silver plated on the inside to prevent galling.