Trying to understand air couplers

[penright]

Just trying to understand air couples little better. The real qestion is about style. Sometimes I see it referanced as letters and sometimes as manufactures. One warehouse video said their catalog had a real life size/shape of the plugs that you could compare to. I could not find it on their online catalog. Some referance the number of rings on the socket. Just curiouis.

 

[msharley]

Some are "high flow"...

And for the most part? Brand "X" will not work with Brand "Y"...

Some are more durable (Milton comes to mind)....

Some break real easy...

Some are easy to use...

Others? Need two men & a boy to disconnect if your fangers are greasy.

Other brands? Tend to have a permanent leak from day #1. ....

No easy answers....

 

[penright]

No easy answers....

I hear you. My friends here on the GJ have straightened me out more than once. I was hoping for another miracle.
I have one air hose (socket) and about a dozen tools. The socket started leaking, so I wanted to replace it. I thought I knew what style it was. In the words of the knight in Indiana Jones, I choose poorly.

 

[Snapped-off]

Looks like you've got a good grasp on it. What else do you need to know? Here's another chart for you.

 

[VolvoRyan]

I got tired of mismatched fittings. I keep a bunch of extra official Milton 'M' fittings/couplers with the air tools... just in case. New tools get the 'M' fittings.

-Ryan

 

[ItsNemo]

Milton V's are where it's at...they accept a couple other kinds but are the highest flow as shown in the chart above and really wake the tools up.

 

[dnschmidt]

Milton V is Milton's designation for Euro style fittings which have been used in Europe for decades. They are also known as Euro-style. They have always been High Flow it's just that nobody in America recognized that fact until about 10 years ago. The best high flow couplers are Prevost. Dixon also makes a superior to Milton version. The best ****** solution is Milton as you can buy their ******* a hell of a lot cheaper than anybody else’s and they work fine with the better Dixon and Prevost couplers.

 

[tak1313]

Milton V is Milton's designation for Euro style fittings which have been used in Europe for decades. They are also known as Euro-style. They have always been High Flow it's just that nobody in America recognized that fact until about 10 years ago. The best high flow couplers are Prevost. Dixon also makes a superior to Milton version. The best ****** solution is Milton as you can buy their ******* a hell of a lot cheaper than anybody else’s and they work fine with the better Dixon and Prevost couplers.

THIS. As far as I know, Milton just took the Euro design/spec and marketed in the US as their "high flow" (V-style) line. So far all the "high flow" couplings I have bought from Flexzilla, Parker, and others have all worked fine together (likely because they are all actually "Euro" spec).

I am currently using Milton V-style female couplers on all my hoses as they will not only accept the V-style/High Flow males, but the "standard" 1/4" industrial males as well. I don't know if other brand Euro females will work with standard industrial males like Milton does (because I have never tried any of them - though I am debating about trying one of the "safety" ones but they're a little pricey, and I'm such a tight@ss).

I use the V/HF ones on anything that uses more cfm (impacts, hammers, etc.) and just the old industrial on intermittent stuff (nailers, etc.) if I already had them on. Anything new just arbitrarily gets the V/HF males.

 

[whitesco]

I just bought a set of the Milton V style 'high flow' to try and standardize all of my stuff. I find that the 'traditional' (for me anyway) industrial style (I think everything I had was M) will fit (male) into the V style couplers and not leak but the V style won't fit into M couplers.

 

[M6erfan]

I just use Prevost couplers, male and female, and move on with life.

 

[danielbuck]

I like Milton V's, switched everything over to that years ago.

 

[Toolfool]

Over 35 years in residential construction I probably used a dozen different brands/styles of air couplings. Retired now, and in my new shop I changed everything to Stedlin QuietPlug. (GJ discount helps)
Edit : I see they're sold on Amazon now.

 

[SM Racing]

CEJN makes the best airline couplers in the world. I have several that are more than 20+ years old. They just keep going and never fail.

 

[vwpieces]

I went Milton V and have had too many blow out the inner O-ring on the brass females. I have learned to take them apart and use cyanoacrylate glue on them. This is with 150psi shop air.
Already invested and committed so learning to fix them was essential.
None I have repaired have dislodged again.

 

[penright]

What else do you need to know?

I was trying to identify the plug style I have. I know I need 1/4" NPT for the connection. That way I could buy the one socket that I need, maybe 2 so I could have a backup.
I will try and get some pictures and measurements.
Meanwhile, I am curious, with coupler styles being so all over the place, what are the odds of me buying some air devices and the coupler style matches? Last month, I bought an air chuck, a high-speed grinder, and mini champering. All plugs worked. I guess that's why I thought there was a "popular" one.

 

[Snapped-off]

I was trying to identify the plug style I have. I know I need 1/4" NPT for the connection. That way I could buy the one socket that I need, maybe 2 so I could have a backup.
I will try and get some pictures and measurements.
Meanwhile, I am curious, with coupler styles being so all over the place, what are the odds of me buying some air devices and the coupler style matches? Last month, I bought an air chuck, a high-speed grinder, and mini champering. All plugs worked. I guess that's why I thought there was a "popular" one.

Just post a picture of one of your plugs. There are also some universal couplers that can take several different plugs.

 

[Rockable]

All of my tools, hoses and air outlets are Industrial interchange couplers. I have no problems until I go to ly buddy's shop and take one of my tools. He uses ARO 210. I used to sell Parker. They make interchanges for ARO 210, Lincoln long stem, Industrial interchange and others. Keep it simple. They created Industrial Interchange for a reason. You can even buy Industrial Interchange at Harbor Freight. Every manufacturer makes them.

 

[penright]

Just post a picture of one of your plugs. There are also some universal couplers that can take several different plugs.

I did not make it into the shop last night. This picture is from the ad of the last air tool I bought.

All of my tools, hoses and air outlets are Industrial interchange couplers. I have no problems until I go to ly buddy's shop and take one of my tools. He uses ARO 210. I used to sell Parker. They make interchanges for ARO 210, Lincoln long stem, Industrial interchange and others. Keep it simple. They created Industrial Interchange for a reason. You can even buy Industrial Interchange at Harbor Freight. Every manufacturer makes them.

So the names you mention are in my OP second photo. Except for the ARO 210, it said ARO Interchange. So is the "Interchange" part significant or just a name? IOW, does "Interchange" mean interchangeability? Yes, I have bought from Harbor Freight without issue. Looking at some snippets from their pictures I see they list all three you mentioned. They also have the letters from my OP first pictures. So are the letters and names interchangeable? Was I just lucky to grab the right ones?


I snip and blended the picture from the air tool with a picture from Harbor Freight add from "Industrial" plug. Because of prspective it is hard to tell, but I think they are the same. I am starting to think that I have industrial.


Starting to connect a few dots, just need to know if I am connecting them correctly.
Oh in my reseach before posting, there was something about telling which socket style based on number of rings. From the pictures of the 3 sockets, I don't think that is correct, correct?

 

[Rockable]

"Industrial" is the operative word. Aeroquip, Foster, Hanson, Parker, etc. all make and Industrial Interchange design and each manufacturer's parts all work with the other's. I think factories got sick and tired of locking themselves into one design. When a supply problem came up, they were stuck. With the Industrial Interchange, they could buy couplers or ******* from anyone. Hope this answers your question.

 

[danielbuck]

yeah, if you buy a new air tool chances are it'll have the "industrial" type on it.

 

[speed bump]

"Industrial" is the operative word. Aeroquip, Foster, Hanson, Parker, etc. all make and Industrial Interchange design and each manufacturer's parts all work with the other's. I think factories got sick and tired of locking themselves into one design. When a supply problem came up, they were stuck. With the Industrial Interchange, they could buy couplers or ******* from anyone. Hope this answers your question.

As someone who works in maintenance at a production facility no one gives a **** about coupler types until you don't have the right one. One a good day we have 1/4" Lincoln, industrial and automotive, 3/8 automotive, and Chicago. On a bad day there's everything on that list in one area.

I did buy some Milton universal 1/4 female couplers for our shop recently which should at least improve our need for adapters in that area.

 

[Pinemarten]

My buddy's shop is set up for Automotive style. All my air tools are Industrial style. Swapping fittings if I'm working at his shop is a PAIN. I made up a short adapter/hose that is Automotive male with an Industrial coupler. When involved in a big project it is easy to remember.................Red hose Industrial...............Black hose Automotive. No wasted time!

 

[red94chev]

When I built my air system a few years ago, I went with all 1/4" Milton V series. Easy to find 10 packs of plugs and whatever thread size couplers you need on eBay.

And just like Pinemartin said, I ended up making a short adapter hose if I need to use one of my tools at a friends house but that's pretty uncommon.

 

[u2slow]

Starting to connect a few dots, just need to know if I am connecting them correctly.
Oh in my reseach before posting, there was something about telling which socket style based on number of rings. From the pictures of the 3 sockets, I don't think that is correct, correct?

Thats the very common M ******.

Use an M coupler, or V if you anticipate adding some higher flow tools to your collection.

 

[penright]

"Industrial" is the operative word.

So Industrial is the style name and is the same as Type M, H, and G. Just that M, H, and G are connector size differences for the "Style" Industrial. Does the letter also have something to do with the male/female connector? With what I have learned through this thread, I went to some other websites to see what they offer. Here are two Industral with different letters.



I guess I have been lucky so far that whatever I bought came with the right coupler.

The wrong one that I bought, which prompted this thread was a "Automotive". Looks like what I have is Industrial. Looks short of Lincon and Aero, if the fat part that clamps is thick that is Automotive, and if more thin, inverted rounded is Industrial. Maybe just get one of those "Universal" ones.

 

[Pinemarten]

The "F" and "M" in the Kobalt graphic refer to Female or Male threads.

 

[Rockable]

I don't speak M, H and G. There are different "body sizes" that give you the potential for more flow with less pressure drop. The 1/4" body size is most common and would typically have 1/4" npt connections, both male and female. The 3/8 body size would flow more air and have correspondingly larger port sizes and are physically larger. You can't plug a 1/4" size ****** into a 3/8 coupler. I use 1/4" size exclusively in my shop except I have 3/8" body size on my blasting cabinet. For general air tool use a 3/8" hose with 1/4" npt fittings attached to 1/4" body size couplers and ******* is adequate. Hope that helps.

 

[u2slow]

What makes it extra confusing is the body size vs thread size. You can get an M ****** (1/4" body) with 3/8" NPT, and conversely a T ****** (3/8" body size) with 1/4" NPT. (I have both).

Many fringe/generic manufacturers just make what they make without good descriptors on the package.

 

[ycgoat]

Will these universal couplers or Milton V series work with the Stedlin? I have outfitted most of my tools and hoses with Stedlin, but am about to add a new compressor system and was hoping to not have to replace all of the fittings in use now to be compatible.

 

[Snapped-off]

Will these universal couplers or Milton V series work with the Stedlin? I have outfitted most of my tools and hoses with Stedlin, but am about to add a new compressor system and was hoping to not have to replace all of the fittings in use now to be compatible.

Pretty sure all the universals will accept I/M, which is what the Stedlin is based off. V couplers will also accept I/M plugs, but not the other way around. I/M couplers won't accept a V plug.

 

[HaroRider]

I got tired of mismatched fittings. I keep a bunch of extra official Milton 'M' fittings/couplers with the air tools... just in case. New tools get the 'M' fittings.

-Ryan

This is exactly what I do. I used to have issues with certain fitting working with others. I gave up and just spend the money on Milton "M" fittings. Every tool I have has that fitting, and my hoses have the correct coupler.

Nightmare before this.

 

[cdoublejj]

so whats the deal with the milton A style vegas lucky 7s?

https://www.amazon.com/gp/product/B001O2UAG2/?tag=atomicindus08-20

Dad's been using them since before i was around i can see how they are restrictive. do the Ms require operating the chuck before insertion or something?

EDIT: looks kind of like ARO, maybe that's why they call them "A" style.

 

[VolvoRyan]

This is exactly what I do. I used to have issues with certain fitting working with others. I gave up and just spend the money on Milton "M" fittings. Every tool I have has that fitting, and my hoses have the correct coupler.

Nightmare before this.

I've found that non-Milton fittings won't work with the Milton push-button couplers. They either leak, or don't engage.

I've been leak free since I went all Milton.

-Ryan

 

[rwa2004]

I have managed to get rid of the beast in our shop by standardizing. I keep everything exclusively 1/4" industrial. If it needs more air than that it is typically hard piped anyway.

Then there is the annoyance of bad quality and poor fit between brands. I finally got rid of all the harbor freight couplers in the building. I buy one brand, and one brand only. I use Coilhose Pneumatics because we already are buying from them on other items. I buy:
PN 1501 - Steel Industrial Connector (male) with male thread 1/4 NPT
PN 1502 - Steel Industrial Connector (male) with female thread 1/4 NPT
PN 150 - Brass Industrial Coupler (female) with female thread 1/4 NPT
PN 152 - Brass Industrial Coupler (female) with male thread 1/4 NPT

New tools always come in with Industrial connectors and they always fit. They stay in use until they leak and then are changed out with Coilhose connectors. Have virtually no trouble with leaks on the Coilhose ones. I am often in the shop after everyone leaves and a hissing hose gets under my skin.

 

[Snapped-off]

so whats the deal with the milton A style vegas lucky 7s?

https://www.amazon.com/gp/product/B001O2UAG2/?tag=atomicindus08-20

Dad's been using them since before i was around i can see how they are restrictive. do the Ms require operating the chuck before insertion or something?

EDIT: looks kind of like ARO, maybe that's why they call them "A" style.

Milton A is ARO. I/M couplers require you to pull the collar back to insert the plug.

I/M plugs work with universal couplers and V/Euro couplers, which allow you to just push the plug in with the coupler unlocked.

 

[GeoBruin]

Sorry to be late to the party on this but I decided it was a good opportunity to test/confirm the function of industrial plugs, V-style plugs, and Stedlin plugs with a Milton universal coupler. While I was at it, I did some flow tests on the various plugs all using the same coupler. For good measure, I threw in a couple tests using a 25' 1/2" diameter hose and a 25' 3/8" diameter hose.

Some of you might find it interesting.

 

[Shoreline_]

I don't know anything about anything except I found don't run 100 feet of hose. It seems to act like a giant metering orifice like the old school refrigeration systems pre expansion valve. Our shop has 1" airlines up to each lift and we run short 3/8 lines to the tools.

 

[cdoublejj]

this guy says his impact has more ugga duggas

 

[ZRX61]

I use Milton T, also have a few adapters with T male/M female & M male/T Female etc so I can plug my **** into other peoples airlines.

The various colored aluminum Milton fittings are absolute junk.

 

[cdoublejj]

it seems Milton is going downhill, even if it's made in USA :-(

atleast those V styles can be had by other brands