To flare or not to flare?
has anyone any comments on the latest "fad",ie using sweated components instead of flares?
i can see from a manufacturing point of view why this would be done(cheapness,ozone friendlyness etc) but from a service point of view its a bloody nuisance.
in my experience there are few flare failures that cannot be attributed to poor standards or just sheer lazyness.the usual reasons are
1.an incorrectly formed flare in the first place
2.an overtightened flare nut
3.poor standards by the engineer replacing a component,who doesnt remake the flare.so it work hardens and fails.
4.unsecured or poorly secured pipework . so that the flare fails ,again due to work hardening.
5.failure to apply any lubricant to the flared end,thus causing abrasive wear and eventual failure
all of the above are due basically to poor standards.
am i the only one concerned about the abysmal standards of the majority of service staff?
before anyone thinks that im some chair bound desk wallah,i am and have been for many years a service guy at the sharp end!!
Re: To flare or not to flare?
yes we use this system why use anything else been using it for a while now oand not one falure absolutly brilliant
Re: To flare or not to flare?
i hate doing flares, i dont mind using manufactured ones you get with split systems but when it comes to expansion valves and the like i would rather take the extra effort to do a brazed joint. I feel a manual flared joint is a weak link and im sure some people out there would go as far as to ban them from certain installs.
Re: To flare or not to flare?
i like to use flares at the drier, for ease of changing it on ppm's, but on everything else soldered joints are a must!
Re: To flare or not to flare?
Quote:
Originally Posted by
coolhibby1875
i like to use flares at the drier, for ease of changing it on ppm's, but on everything else soldered joints are a must!
Could'nt agree more, we used to change driers on a major service visit.
Cheers
Re: To flare or not to flare?
I've changed to fitting brazed in components now after resisting the change for a while. Having a decent brazing torch helps, now i've got an oxy kit with a pepper pot burner on it :cool:
I used to like those t flow drier and sightglass combinations as you could braze them in and the drier just screwed on below with an o ring to seal.
It needs some enterprizing manufacturer to make a rotalock drier, surely it wouldn't cost much more to machine than a flare one. Just the pipe fittings to buy and install.
Re: To flare or not to flare?
Quote:
Originally Posted by
monkey spanners
I've changed to fitting brazed in components now after resisting the change for a while. Having a decent brazing torch helps, now i've got an oxy kit with a pepper pot burner on it :cool:
I used to like those t flow drier and sightglass combinations as you could braze them in and the drier just screwed on below with an o ring to seal.
It needs some enterprizing manufacturer to make a rotalock drier, surely it wouldn't cost much more to machine than a flare one. Just the pipe fittings to buy and install.
But O ring driers are already available. Us transport guys have been fitting them for years. Most transport equipment now uses O ring or sweat. Flare is dark ages, to be honest the only bit that worries me when I have to do my C&G 2079 is doing a decent flare when I wouldn't bother in the real world.
Re: To flare or not to flare?
Quote:
Originally Posted by
djbe
But O ring driers are already available. Us transport guys have been fitting them for years. Most transport equipment now uses O ring or sweat. Flare is dark ages, to be honest the only bit that worries me when I have to do my C&G 2079 is doing a decent flare when I wouldn't bother in the real world.
KMP stopped making or possibly importing their t flow driers into the uk, what make are you using and where are you getting them from?
I think valcon also made them but again none of the wholsalers near me stocks them :confused:
Come on Sporlan or Danfoss, fingers out of a*ses time :p
Re: To flare or not to flare?
Yeah you are right about KMP they stopped making the 'T' flow.
Valcon are available, but it depends on your supplier. We get them O.k.
Both Carrier and Thermoking use 'O' ring type driers now, these are not T flow but "straight through" and dimensionally the same as their previous flare type. i.e 303 'O' ring is the same size as 303 flare.
I believe they are made by Danfoss and have seen some made by Emerson, but they are seemingly impossible to get over the counter at somewhere like Dean & Wood.
Re: To flare or not to flare?
I don't care how long it takes. I prefer sweat because of the contraction issues and they will always leak. I tell my guys the same thing. There may be a few different opinions here is your refrigerant costs $1600.00 for 8 ounces.
Re: To flare or not to flare?
i prefer sweated driers i only fit flared if i really have to also sight glasses etc.