Model: AC Pro
Refrigerant Type: 744
Ambient Temp: 55
Pressure High: 650
Granted I deviated from design pressure, but not by a whole lot. 600-700 psi on 500 psi working pressure hose rated at 2,500 psi. I used the hose that came with Interdynamics IDQ A/C Pro R12 charging kit to transfer CO2 from a big tank into a little one. The hose came off the connector and whipped hard. The weakest link of any system should be the marked rating for safety reasons. Brand new part that hasn't been deteriorated from use blowing apart at overload under 50% of working pressure when the marked burst pressure is 500% is not acceptable. Discussions on other forums touch on poor quality construction of A/C Pro products but I haven't come across any personal injury ones yet.
With the hose blown off the fitting, 20 lbs or so CO2 rapidly ejected into the area. The layer of fog I had along the ground was freaking tight! it sprayed away from me, but if it sprayed on me, it would have been a damn serious frost bite injury.
Isn't too bad, but got me hard enough to cut the skin a bit through a thick hoodie and a shirt. You can sort of see that four dot pattern on me corresponding to the pattern no the crimped ferrule that got me.
It just popped off just like that. WTF is this zinc die cast chitt garbage? These days, pressure carrying connections on many A/C Pro items are made of PLASTIC. Older Robinair can top hose ends were made of brass, like professional quality products.
INTERDYNAMICS 2500 PSI
Here, this girl got sprayed all over herself with R-134a cuz of crappy Interdynamics (A/C Pro Cold or whatever its called now) product.
ACProcold Facebook Comment
Edited: Wed April 09, 2014 at 12:48 PM by Leggie
I know a guy who go hit on his cheek from an air line that cam e loose from an impact wrench. His teeth being there it cut right through easily, he needed stitches on the inside and outside.
Interdynamics stuff is of course crap, but you did go well beyond what it is intended for. The rubber is not designed to stay flexible at -100 F, I'm sure.
Also, you probably know this, but be careful refilling small tanks. If one is overfilled to 100% liquid with no vapor space, the pressure will rise uncontrolled and likely burst when temperature goes up.
I kind of enjoyed the comment, so easy to use even an actor can us it. Just confirms to me why this type of product brings in so much business at times.
The product is a Pro; so you do not have to be. I also do like the quality look of that hose barb. Wow, I think my tongue is stuck in my check. But what else can we expect from IDQ.
I see the hose is marked as 2500 PSI MF (?) or MP (Max pressure). Is the hose also marked as 500 PSI WP (working pressure)? Seems you have proven the this assembly bursts at 700 PSI (not 2500 PSI); therefore with a standard 4-1 safety factor (based upon burst tests), the published assembly max working pressure should be 175 PSI. There is such a thing as Product Liability, you may want to look into it.
If you are transferring higher pressure gasses and refrigerants, I would highly recommend a more quality branded (reputable) hose such as the Mastercool brand from this site, or Yellow Jacket. That's what we do.
I've seen nearly identical (exact same ratings) failures from Interdynamics "professional" hoses with R12 at normal pressures 20 years ago.
Edited: Thu April 10, 2014 at 8:27 PM by CorvairGeek
I still stand by my comment. The conspicuously marked rating should be the weakest point. The hose is marked 500 WP 2500. The grooving of the barb isn't deep and casting mark couldn't be more obvious. You better believe I'm shifting into product liability gear if the outcome had been more than a bruise.
The casting flash on the hose barb is just beautiful; a designed in leak path.
This is why we have SAE standards for refrigerant hose; it is marked to meet a specific J spec, right?
How do they get away with peddling such junk?
See signature line.
I bought a can of 134a at w**-mart that had a stop leak, oil, and dye in it. It also had a hose and a gauge, so now I'm an AC pro!
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