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just started up a split sys. ,cooling only, and discovered th th dryer was installed backwards! What probs if any should we be expecting? Not looking forward to the time and effort to change it.
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I use "stuff" when the SAE nut is subjected to freezing,like in refrig/freezer
I've never heard of using anything on flares?
I know this is a sensitive topic so please no one feel like I'm dissin' your method.
It's a matter if introducing something into the joint that could actually cause an otherwise sound joint to fail.
Flares made in the field have worked fine on brake lines, gas lines and all kinds of dangerous applications for many many years without any sealant.
If you make flares, pressure test them, and then even pull a good 500 micron or lower vacuum on it, I'd call them good. Gorilla snot could be fine but fail down the road, who knows?
That's all.
No reason for anyone to get offended or upset. It's not like we're talking about cooking beef until it's well done or anything horrible.
Whatever happened to the system with the backwards filter dryer?
But is brazed in then not so quick.
I use Nylog on 410A threads (mostly mini-splits).
For R22 I use a touch of oil on threads and a drop on the back side of the flared tube where the nut will rotate.
The AC units I use come with solder filter dryer so that is what is used. Mini's come with the flare conn on unit. But I silver solder longer pigtails on the inside unit as the walls are thicker than usual and the outside bend would be right at the flare.
I use flare LLFD for everything except 410A.
Just expanding the conversation.
Old school thought was that with a backwards LLFD could put some of the filtering material into the liquid line on it's way to the TXV/orifice. Don't know how factual that is BTY.
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Double flare dies are inexpensive and will work with most any standard flaring tool.
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