b-boy
Well-known member
It's almost as big of travesty as Canadians putting gravy on French fries![]()
It's called poutine, and it is fantastic! This coming from an American.
It's almost as big of travesty as Canadians putting gravy on French fries![]()
If you do the research, you'll find that while the PVC pipe manufacturers rate their products for use with liquid under pressure, they specifically state their product is not for use with compressed gases.
Many items are used in situations in which they weren't designed for and work just fine, so what's your point?
In over 70% of PVC pressure failures the tubing fails before the joint.
Compressed liquid pressure ratings on PVC have absolutely zero relevance to compressed gas pressure ratings. It is not rated for use with compressed gases at all. Compressed liquids do not store energy, compressed gases do, which is why PVC explodes when used for compressed gases. PVC gets brittle with age, too, so the manufacturer's rating is pretty much worthless after about 10 years.
Using PVC for compressed gases is banned by OSHA, ASME/ANSI and ASTM except when buried, and even then some states don't even allow it when buried.
I used the Prevost piping system for my garage.
Another vote for 3/4 RapidAir but I wouldn't put it under the drywall. I only had one fitting pop off during my first pressurization but that would be a real PITA down the road.
You can use a loaded gun for a hammer. But I wouldn't recommend it, because it's a stupid thing to do.
I went with 1/2" seamed stainless tubing and swagelok fittings.
Heretic!!Gravy on French fries is absolutely normal...
It matters not. It still work hardens still fractures catastrophicallySchedule 40 gray pvc not the white stuff. Florida doesn't get cold.
Question. If you are using copper could you use a pipe bender similar to conduit stubs for your corners?
This sounds interesting. Would you be looking at a considerable difference in cost over copper? I was leaning towards copper but will look ar SS. I have a buddy that runs SS and likes the Swagelok fittings for natural gas work. So he has all the tools required and probably would get a kick out of finding another avenue for his talent.
Copper tubing, yes.....copper pipe, no. Know which one you are working with.
Hard Copper pipe can absolutely be bent. It can not be M as its to thin and will kink.
L and K bends nicely. I use ridgid ratchet benders. 378 for 3/4" pipe and 358 for 1/2" pipe.
Ridgid also makes an expander to expand copper pipe eliminating couplers and one joint. Rothenberger make tee pullers to eliminate tees.
Hard Copper pipe can absolutely be bent. It can not be M as its to thin and will kink.
L and K bends nicely. I use ridgid ratchet benders. 378 for 3/4" pipe and 358 for 1/2" pipe.
Ridgid also makes an expander to expand copper pipe eliminating couplers and one joint. Rothenberger make tee pullers to eliminate tees.
By all the manufacturers of PVC pipe and fittings....that's who.PVC and it's solvent cement will not hold up to the oil in compressed air and the shock loads involved over time.Heat is a factor also.That being said...it's your life and you can use whatever material you choose.By who?
I won't be going in your shop, so I don't care. RapidAir 1/2" kit sitting in the debris field that is my garage, awaiting installation. I'm going to use some 1/2" galvanized that I had in the old garage--it's already pretty much made up for drops already and I'll use it in the more vulnerable parts of the garage. When I'm done, I'll have too many air outlets, which is just about right now that electric impacts have gotten so good.
Are you anneling the pipe? I’ve never been able to bend hard pipe, maybe I’m not using the right bender. Tube is already anneled and is easily moved until it work hardens. I’m going to check out the bender you are using as it sounds much like the bender I use for HVAC piping. Thanks!
My bender is a yellow jacket brand, but otherwise is the same. It’s a much different bender than yours and mine will kink hard pipe as mine is made for soft tubing. A style like the ridged supports the pipe and actually pulls the pipe around the die. Here is the bender that I use.
https://www.amazon.com/dp/B00FPPDK70/?tag=atomicindus08-20
Schedule 40 gray pvc not the white stuff. Florida doesn't get cold.
It's called poutine, and it is fantastic! This coming from an American.

Many items are used in situations in which they weren't designed for and work just fine, so what's your point?

There have been a couple reports here on the board in recent months from people who have had PVC lines fail spontaneously in their shops. It can and does happen. It's not anecdotal.
It's called poutine, and it is fantastic! This coming from an American.
I made a 180 degree bend with about a 6-8" radius in 3/4" soft copper by filling it with sand. Looks dang good and is exposed on a wall. I hung a round clock inside the bend.Question. If you are using copper could you use a pipe bender similar to conduit stubs for your corners?
