Thanks to some very helpful advice from members of theis NG I am about ready
to put my new/old Quincy 5hp Compressor into service. After installing a
new check valve in the tank I now need to cut an flare the main tupe that
goes from the head into the compressor. I cut the tubing to length but I
have not found a place that carries a flaring tool large enough. The OD of
the tubing is 3/4", Inside diameter is 5/8". Does this seem correct. I
looked in MSC and they had a flaring tool for over $100.00. I figured I
would ask for help from the knowledgeable mebers of this group.
Thanks for the help.
I take it the flaring tool intended for plumbing is too small. If not, you
can pick one up cheap at the local home center.
Flaring tools intended for air conditioners can usually do 3/4" tubing. Do
you have an HVAC contractor buddy?
you can buy a 5/8" flaring tool (one piece)
at a plumbing supply or a larger hardware store.
cost should be around $8-10 dollars. It works by inserting in to the
tubing, and hitting it with a hammer. works great, just go slow so you
don't split the tubing.
I have a couple laying around the shop. They aren't expensive. If you
have a lathe you could turn one out in 30 minutes or so. Most any
professional plumbing supply carries them. Make sure the copper hasn't
been work hardened or it will split. Just bring the end up to a red
heat and quench to anneal it.
Drill a block of hardwood the size of the tube id and take a roundover
bit around the inside of the hole. Cut a saw kerf from the edge of the
block to the hole and clamp this around your pipe with the edge flush
with the block. Set the ball end of a ball pein hammer on the tubing
and strike it. You may need to anneal the tubing first.
Ned, I'm shocked! Obviously I am mistaken that copper can't be used but I
have had it fail here a couple of times and a compressor rep. told me not to
use copper again for that reason. I can't say my Quincys vibrate more than
they should. Maybe you have magic! Maybe your installation minimizes the
effects of vibration.
That's probably it there. If both ends of the tube are connected to things
which are mechanically coupled to each other (by other than the copper),
then there's not a lot of vibration as seen by the copper. It's when one end
is moving relative to the other that you'll see the work hardening.
That said, I don't use copper for that sort of application, but my
I dunno, all the copper on the IR appears to be straight
from the factory, including interstage cooler, centrifugal
release, and the output line from the compressor to the
tank check. There's not much vibration - I assume it'd be
more likely to be a problem if you could see or feel
vibration in the tubing, but everything is solidly mounted
and well supported (other than the damn belt guard).