plumbing 4 air ?

[patrick_g]

Ray, my concern is putting oil into a hose and having the oil deteriorate the hose because I don't know which kind of hose to use to be oil resistant. I have plastic and rubber hoses.

I sure don't lose sleep about most of my air powered wood working tools since they are HF except for a really nice Senco finish nailer. With my HF air powered nailer/staplers I have so little invested for so much productivity I already feel like a bandit. I am also pretty fast taking them apart to clear the occasional jam.

My air ratchets, impacts, and such were bought before I was introduced to HF but are Taiwan and China origin anyway and work good enough for me. I do tend to oil these copiously and after 10-15 years they still work fine.

Oh, and by the way... I don't think any tools you bought new are older than me. I understand your sentiment though. I have told some of my sub's workers I am wearing boots older than they are (I was.) This was in response to an "old timer" with 5 years experience ragging on a new guy with only a few months experience.

Pat

 

[Ken_CT]

Pat

I think any hose sold commercially for compressed air use will be ok. I used to use a lot of Parker 801 Push-Lok which was a general purpose air hose. It was a synthetic rubber hose with excellent characteristics, very supple, 200 psi working, oil resistant. That was an industrial grade hose, and unless you want to go to an industrial supply house and spend a lot of money the only way you will be able to find info on a specific hose will be to contact the manufacturer. Unfortunately you may have to learn to speak Chinese.



Ken

 

[patrick_g]

Ken, Thanks for your thoughts. My plastic hoses are about 10 years old and are marked oil resistant. I'm not sure the rubber ones are marked.

Chinese is a bugger but we may need to get around to it. I'm still working on Hindi and Tagalog so I can make sense out of outsourced customer service for Microsoft, Cisco Systems, and the other profiteering computer related companies.

Actually, I was once offered, encouraged, and cajoled toward an all expenses paid plus salary trip through Harvard Language School to study Chinese but I had a contract that permitted me to turn it down. This was when I was in the USAF during the little fracas known as Viet Nam. I couldn't think of any good reason for me to want to do whatever the USAF would have me do after training me in Chinese so I ended up as an instrument flying instructor on a flt sim in Minot, North Dakota (as bad or worse.)

Pat

 

[schmism]

Ive used 1/2" PVC in my shop for the past 8 years with no incident. (the 1/2 having rated to 500psi stamped on the outside makes me not worry about it)

1/2" PVC has been installed in my dads shop for the past 15 years, no incidents.

we both run single stage 120psi compressors.

When i plumb the new barn it will be in a mix of PVC and black pipe.

 

[ray66v]

Ive used 1/2" PVC in my shop for the past 8 years with no incident. (the 1/2 having rated to 500psi stamped on the outside makes me not worry about it)

1/2" PVC has been installed in my dads shop for the past 15 years, no incidents.

we both run single stage 120psi compressors.

When i plumb the new barn it will be in a mix of PVC and black pipe.

PVC can work for air. The psi. rating is not the problem. PVC is not able to handle the vibration, temperature, chemicals, and occasional shock from pulling, tripping on hoses.

Unlike global warming, the debate on PVC air lines is over.
It is not legal for air for a reason. Many accidents have happened.
A track record of success by some, will never change that.

 

[patrick_g]

PVC can work for air. The psi. rating is not the problem. PVC is not able to handle the vibration, temperature, chemicals, and occasional shock from pulling, tripping on hoses.

Unlike global warming, the debate on PVC air lines is over.
It is not legal for air for a reason. Many accidents have happened.
A track record of success by some, will never change that.

Ray, If a guy says, "I intend to live forever and so far so good", what can you possibly do with logic or common sense to persuade him of a different outcome.

You don't necessarily get killed the first few times you walk across the street without looking in either direction, thus proving it is a safe and advisable activity no matter what the insurance statistics may say.

Who was it that said, "Common sense is an uncommon commodity?"

Pat

 

[ray66v]

"You don't necessarily get killed the first few times you walk across the street without looking in either direction, thus proving it is a safe and advisable activity no matter what the insurance statistics may say."

I like that one.

 

[oliver28472]

Another plumbing tip. My brother and I replumbed some things on my tank a few weeks ago. No pipe on mine at all, just enough for a ball valve, gauge and hose. We also removed the petcock and put in a tank drain just like road tractors use. It has a little cable (custom cut length) crimped on to the valve. Just about every time I am in the barn I give it a yank and release whatever moiture is in the bottom of the tank. This way I don't have to get dirty crawling around, fumbling for the petcock and trying to remember which way to turn the dadgum thing.

 

[schmism]

PVC can work for air. The psi. rating is not the problem. PVC is not able to handle the vibration, temperature, chemicals, and occasional shock from pulling, tripping on hoses.

thats why i plumb all my "drops" in black pipe. last 3-6' the hose is connected to.

The rest is tucked away in the ceiling, safe from the impacts that usually cause problems.

Ive never found operating temps above the 140deg f its rated for.

"You don't necessarily get killed the first few times you walk across the street without looking in either direction, thus proving it is a safe and advisable activity no matter what the insurance statistics may say."

I suppose thats like saying guns are safe so no precautions need to be taken, or cars are safe so no need to wear the seatbelt, or any of the other potentially dangerous, lethal things we come in contact with every day.

advisable activity no matter what the insurance statistics may say.

Or i could interpret that to say i should only live my life by what the statistics say is safe for me and my family. You know, those "your 100 times more likely (orwhatever the number is) to die in a car wreck then a plan crash" so i should fly everywhere. (including to the stored down the street) Or because sweet-n-low says it may cause cancer i shouldn't eat it. (hey it didnt get on the label unless the statistics said it should be)

Ya i like that one two.

 

[ray66v]

Clearly you have taken some actions to correct some of the short comings of
PVC pipe. Many users have not. And still believe there is no problem.

thats why i plumb all my "drops" in black pipe. last 3-6' the hose is connected to.

This is what I recommend, plus a vibration isolator, (hose), at the compressor with some schedule 80 plastic fittings, for anyone who insists on using PVC. That seems to mitigate the problems with the common failure points.

Ive never found operating temps above the 140deg f its rated for.

The temps at the connection to the compressor, in some installations can exceed 140f. (i.e. hot air coming from a hot tank). Add to that, the vibration, and in some extreme cases, even pulling from a compressor as it attempts to move to a different position, and eventually the connection fails. (In a very loud way).