low lost fittings

[iowa tech]

what ones do you use? what the best?

thanks

[beachtech]

i use yellow jacket low loss hoses.

been using them for years with very little problems. they are rebuildable as well. and usually the only problem is that random seal rolls over every once in a while. but resetting it and putting some supco oil on it takes care of that problem for months at a time. they work great as long as you don't crank down on them. if you like to over torque your hoses then you may want to consider the quater turn ball vale ends. but those are little more prone to failure in my experience with them.

[mark beiser]

I only use a low loss fitting on the high side hose of my Testo 523 that I use for R-410A systems.
The best low loss fittings I have found are the ones made by NRP.

I use 3 piece hoses, long hose, ball valve, 6" hose. Not the ball valves with the hose made onto them, both of the hoses screw onto the ball valves 1/4" flare fitting.
I keep a little pressure in my manifold and hoses all the time, so when I hook up to a system I only have to bleed the short hoses and open the ball valves.

When working with R-410A, I use a low loss fitting on the end of the high side hose because with the pressure that R-410A systems operate at, there is quite a violent hiss when disconnecting, even when it is just loosing the refrigerant contained in a 6" hose. Also R-410A boils off at around -60º at atmospheric pressure, so even that little bit jetting out of the hose can hurt, lol.

[beachtech]

i too leave refer in my hoses all the time

[castillo7411]

I use both the hoses with the ball valves on them and the adapter 90( I can't remember the brand)I love the ball valve type, even though just a pinch spits back out, but only use those on R410a, while the other low loss fitting have a big knuckle to them and at times hard to fit on some units. Well what ever you do get whatever works for you, I hate it when some people dont use any on our start-ups and i go to them for a system inspection a few weeks later only to freak out wondering if th guy that hase no low loss fittings was there or if there is a leak nearby

[beachtech]

I use both the hoses with the ball valves on them and the adapter 90( I can't remember the brand)I love the ball valve type, even though just a pinch spits back out, but only use those on R410a, while the other low loss fitting have a big knuckle to them and at times hard to fit on some units. Well what ever you do get whatever works for you, I hate it when some people dont use any on our start-ups and i go to them for a system inspection a few weeks later only to freak out wondering if th guy that hase no low loss fittings was there or if there is a leak nearby

spray a little big blue on the oil when your done and it will not be there the next time you come back

[jurina]

Yellow Jackets are the best

[stomper56]

i only use my YJ low losses when checking system pressures, and use the manual ball valve for evacutating /charging. i was taught that the low losses take about 25% longer to evacuate due to the smaller inside diameter. i dont know if theres any truth to that but i really dont want to take any longer than i have to just to find out so i stick with my manuals. what do you guys think is there any truth to this claim

[Dchappa21]

NRP are the best I've used.

Not a big fan of the yellow jackects don't seem to last anywhere near as long as NRP.

[hvacrjones]

I to find that NRP hoses are better than YJ the low loss fittings of the NRP are also smaller in diameter than the YJ.

[MichaelPaladin]

I use the Yellow Jackets fittings as well. But I haven't used the 'colored" hoses in years. I've only bought the Black Heavy Duty hoses, for me they have lasted longer. I still have and use the first set I've bought in 1998, the only thing I've had to do is replace is the rubber inserts for the schreader depressor.

[beachtech]

i only use my YJ low losses when checking system pressures, and use the manual ball valve for evacutating /charging. i was taught that the low losses take about 25% longer to evacuate due to the smaller inside diameter. i dont know if theres any truth to that but i really dont want to take any longer than i have to just to find out so i stick with my manuals. what do you guys think is there any truth to this claim

there maybe some truth to this claim, but if you remove your schrader cores, you will make that back up and more

[JWB]

You always use core removal on evac?