To you refrigeration techs. Need assistance on a tool?
Hey guys I am having an issue with a store air handling unit. Apparently there is a leak on the system. I know the coil is not leaking. The piping going into the coil is large in diameter. I have seen refrigeration guys perfectly pinch large copper pipe in order to pressure test. What tool do you guys use to perfectly pinch your lines. The copper pipe sort of looks like a cross pinch???? Is there a name for that tool. Thanks guys!
Why pinch it? There should be valves.
There is a tool but only to 5/8 od or so.
I have used two to bridge a 7/8 line but that was to temporarily cap a 1/2 relief manifold-threaded.
Looks like a vise-grip.
We call it staring the end of the pipe. Heat up the end of the pipe to Make it soft copper. Then pinch it with your chanellocks and weld it closed with 15% silfoss.
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Have you checked it with a leak detector, before you start pulling the system apart?
“I haven’t failed. I’ve just found 10,000 ways that won’t work.” - Thomas Edison
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With larger pipe usually just get the appropriate size cap and weld it on.
The leak is on the lines that is confirmed. There is a lot of oil spots around the armaflex insulation. The pipe size is 3". I once came across a refrigeration rack changeout and i seen majority of all the pipes that were cut out perfectly cross pinched. It actually was not pinched shut in a straight line. The way they pinched it looked like a cross staring right at it.
How would pinching be of any value?
Valve off or reclaim. Right?
After you crimp the pipe fix the leak what is your plan to uncrimp it?
The higher your post count the more you know
Dead end,capped pipe or pinched = OIL TRAP if not draining back into System.
Just be careful and "think" about applying a torch to this.
After depressurizing or slight pressure,drill or punch a hole at the Bottom of the 'joint' and SEE what comes forth.
As TP said, You might not think I know what I'm doing,but I do.
I get a helper.WooHoo.Need 1 for sure.