What kind of air line fittings to use?

[avysittinon22s]

Wondering what the best type of air line fittings to use on my air bag suspension?

[scotts62]

Originally Posted by avysittinon22s

Wondering what the best type of air line fittings to use on my air bag suspension?

I wouldn't use the press in kind or ''quick connect'' I would only use the brass. (And i cant remember the exact name for them.....someone help me out..)
Thats just my opinion, i have had friends where the (quick connect) fittings have left them stranded in traffic at an intersection because they leak really bad or pop out.

Scott,

[TravRMK]

brass compression fittings.

[jlaird]

Originally Posted by scotts62

I wouldn't use the press in kind or ''quick connect'' I would only use the brass. (And i cant remember the exact name for them.....someone help me out..)
Thats just my opinion, i have had friends where the (quick connect) fittings have left them stranded in traffic at an intersection because they leak really bad or pop out.

Scott,

It's all in the installation my friend. PTC, compression, they all work well. Just make sure they are DOT.

[scotts62]

Originally Posted by jlaird

It's all in the installation my friend. PTC, compression, they all work well. Just make sure they are DOT.

Yep i agree 100%, that was just in my opinion.

[Shane]

DOT approved Push To Connect fittings are perfectly fine if one knows what they are doing and then takes the time to properly prepare the TUBING before making up the fitting. Emphasis on "knows what they are doing."

Take a peep under most any over-the-road truck and see what kind of fittings they use on their bags and even some on their air brake systems ... you guessed it ... Push-To-Connect fittings.

[red02chevy]

Eaton Weatherhead PTC's

[Frizzle Fry]

I'm going to switch over to swagelok compression fittings when I change over to 1/4" copper line. Right now I have PTC (aka one-touch).

[tds]

http://www.fastenal.com/web/products...=441030-131280

like these?

[scotts62]

Originally Posted by Shane

DOT approved Push To Connect fittings are perfectly fine if one knows what they are doing and then takes the time to properly prepare the TUBING before making up the fitting. Emphasis on "knows what they are doing."

Take a peep under most any over-the-road truck and see what kind of fittings they use on their bags and even some on their air brake systems ... you guessed it ... Push-To-Connect fittings.

Again that was just my opinion

[randomhero472]

Originally Posted by tds

http://www.fastenal.com/web/products...=441030-131280

like these?

THIRTY FIVE DOLLARS........

[project1968]

Hey Shane, What is the correct way to prepare fittings for the quick connect?...are you talking about a clean, straight cut with a sharp razor blade or is there more

[tds]

Originally Posted by randomhero472

THIRTY FIVE DOLLARS........

i'd order them through work and not pay that price

[Shane]

Originally Posted by project1968

Hey Shane, What is the correct way to prepare fittings for the quick connect?...are you talking about a clean, straight cut with a sharp razor blade or is there more

clean square cuts to the tubing (i use one of these) . The one shown comes from Harbor Freight and is about 1/10 the price of the one I ordered from McMaster-Carr a few years back. I have since picked one of the HF cutters up and it works just as well.

Depending on the tubing, but sometimes you will need to "debur" the cut-end O.D. with some sand paper. Not enough to change the round shape of the tubing, but just enough to remove the "burr"

Good Luck.

[project1968]

That is a very cool tool. I put bags on the rear with schrader valves and I made the cuts very carfully trying to be straight and I used a new sharp razor blade, but I have a very slow leak on one side and I think I have tracked to be one of the quick connects where the tubing goes in. I wonder if I can try to redo the connection with the same QC fitting?

[Shane]

push to connect fittings are designed to be reusable ... I use a open end wrench the same size as the tubing (3/8" in my case) and then place the open-end portion of the wrench so it is "straddling" the tubing, then push down on the ring with the wrench while gently pulling on the tubing.

It should pull right out. You can then trim it and then push back in to make your connection.

FWIW: I have had more trouble getting the NPT (threaded) portion of the fittings to seal than I have the PTC portion.

P.S. soapy water in a squirt bottle will help pin point the leak ... cheap too.

Good Luck.

[project1968]

Thanks for the info, I will br working on it this weekend