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Milton V-style/high-flow/HVLP air fitting interchange

ijroorda

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Joined
Oct 17, 2011
Messages
146
Location
Pella, Iowa
GJ turned me on to Milton V-style fittings when I bought my first air compressor a few years ago. Since I wanted to start out with all new couplers and plugs anyway, it was a no-brainer to go with the high-flow design over standard industrial interchange, and I've been very happy with them.

Recently, Leveleer's thread about developing his own air coupler design has got me looking into what other brands/styles of fittings the Milton V-style stuff will interchange with. It's very difficult to find a definitive answer from manufacturers on this; this post makes it sound like there may be some legal reasons behind that. From what I have been able to piece together, though, it looks like 1/4" body size couplers/fittings labeled "high-flow," "HVLP," "Euro," "European interchange," or "DN 7.2" may all interchange with Milton V, at least from an external dimension standpoint (sounds like ID of plugs may vary - for example, Milton vs Guardair).

Before recently, I hadn't looked into this much, and assumed Milton V-style was semi-proprietary; however, it looks like lots of manufacturers make this style (assuming they're actually compatible). I believe Parker calls them "RF," Coilhose calls them "Megaflow," Prevost calls them "high flow (HVLP) profile," McMaster calls them "European shape," Grainger calls them "global style hi-flow," Plews-Edelmann/Amflo calls them "Hi-Flo," etc. DeVilbiss, Sharpe, Guardair and Husky all sell them too, as do many others I'm sure (I think Harbor Freight used to sell a version as well).

I see the Milton V stuff get pushed a lot, and with good reason; Milton makes good products, and if all you need is basic couplers and plugs, they are a good value. However, there are other products, not offered by Milton in V-style, that may be desirable for various reasons - for example, Prevost and Coilhose "safety" couplers, Coilhose swivel and hose barb plugs, etc. If someone is already invested in Milton V-style or another manufacturer's high-flow air fittings, it would be useful to know which other products will work with what they have.

So, can anyone confirm with certainty whether any or all of the products I've listed above are compatible/interchangeable with Milton V-style air fittings?

Please feel free to correct me if I've listed anything inaccurate. I hesitated to start yet another thread about air couplers, but I've spent quite a bit of time looking for accurate information on this subject and haven't come up with much. What I have found has been pieced together from many sources; I'm looking to collect as much knowledge as I can get into one place so that someone who might be Googling this (as I have been) will be able to find a definitive answer.

Thanks!
 
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dnschmidt

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Oct 3, 2014
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7,270
Location
Phoenix, AZ
The Milton V is an after the fact fitting nothing to patent since they have been around for years. Yes they are completely interchangable with the European style fittings. I called both Prevost and Dixon Industries to ask about this since the Milton V couplers **** and leak air in quite a short time after being put into service and Prevost's and Dixon's couplers don't.

Also, The couplers Milton sells for the V are said to be compatible with the Milton industrial (M) stubs . They really are not. Put a tool with a M stub into a V coupler and wiggle it. Leakage.

As Americas we think that every improvement or invention in the world must come from us. Well, sad to say, it doesn't. Just another example.
 

6PTsocket

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Joined
Mar 12, 2014
Messages
4,593
When I first read about the benefits of the Milton V's I decided to try them but if there is a more reliable alternative at a not insane price I will go that way. Do you have a convenient source fo a brand you reccomend? Grainger does not sell to the public. Are all of the brands mentioned by the OP better alternatives or ahould I stick with Prevost or Dixon? I don't want to reinvent the wheel. Thanks.

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BDT/NWMN

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Joined
Jan 22, 2012
Messages
3,762
Location
Erskine, Mn
Stick with what is popular locally if they have proven to be durable and have little restriction. I have a couple short adapter hoses with various couplers that enable Me to use My equipment in various host shops without changing air fittings. One size fits all is best reserved for Big Momma Pantyhose, not air fittings.

One thing to keep in mind about the Milton V series is that they were not designed to be mounted on impact equipment.. Being that I use whip hoses on My impacts, the V has worked out well for My needs.
 
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ijroorda

Well-known member
Joined
Oct 17, 2011
Messages
146
Location
Pella, Iowa
The Milton V is an after the fact fitting nothing to patent since they have been around for years. Yes they are completely interchangable with the European style fittings. I called both Prevost and Dixon Industries to ask about this since the Milton V couplers **** and leak air in quite a short time after being put into service and Prevost's and Dixon's couplers don't.

Also, The couplers Milton sells for the V are said to be compatible with the Milton industrial (M) stubs . They really are not. Put a tool with a M stub into a V coupler and wiggle it. Leakage.

Thanks for confirming this. You're not the first person I've heard say that the Milton V couplers leak; I haven't noticed mine leaking with V fittings, but I'm just a DIY user so they definitely don't see the same kind of abuse they'd get in a shop environment. I have noticed what you said about the I/M plugs with the V couplers; they will plug in and work, but leak if there is any kind of side-load on the connection. I have V plugs on all my air tools and only use my leftover M plugs on things like blow guns or air chucks that I use briefly and then disconnect. Again, this approach is probably more practical for me as a DIY user than it would be in a shop environment.

Thanks again for the feedback.
 

bmwpowere36m3

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Joined
Nov 8, 2012
Messages
1,125
We've used M/I series couplers at our shop forever... impacts, HVLP, etc. Couplers from Milton, Parker and Foster have lasted and are robust. I picked up some Milton V fittings and wasn't impressed with design and fit. I'm not surprised they leak with use based on what I saw.

Couplers are usually the smallest restriction in the whole system anyway.
 
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ijroorda

Well-known member
Joined
Oct 17, 2011
Messages
146
Location
Pella, Iowa
When I first read about the benefits of the Milton V's I decided to try them but if there is a more reliable alternative at a not insane price I will go that way. Do you have a convenient source fo a brand you reccomend? Grainger does not sell to the public. Are all of the brands mentioned by the OP better alternatives or ahould I stick with Prevost or Dixon? I don't want to reinvent the wheel. Thanks.

I have been hearing good things recently about Coilhose products; their high-flow stuff is available on Amazon at a comparable price to the Milton V style. I don't own any Coilhose stuff myself, so can't personally speak to its quality/reliability.
 
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kythri

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Jan 3, 2007
Messages
6,330
Location
Lebanon, OR
Weird. I just checked my latest invoice (dated June of this year), and it does have a business name associated with it, which, from the name, I definitely provided.

I probably set it up 3-4 years ago, and never had to provide any documentation, hence my original question (I forgot I had a business name associated with it).
 

6PTsocket

Well-known member
Joined
Mar 12, 2014
Messages
4,593
Is one not able to make up a business name?
Only if one has a tax resale number. I used to buy there when they extended the courtesy to the employees of the goverment agency I worked for because they spent a fortune in there but we did pay tax.

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crab

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Joined
Jan 8, 2015
Messages
940
The good thing about Grainger is you'd be hard pressed to need something you couldn't get from Grainger. The bad thing is, your price depends on how much volume you do with them, there can be a big difference between someone that spends 100 a year and a company that spends several thousand a year. I have the account number for the company I work for so I can get there discount but they don't spend enough to get much of a discount. I have a friend that works for a company that spends a lot and his discount is substantial. They're great for hard to find stuff but they aren't cheap unless you can use a big companies account. You can use an account number and pay cash if you know the account number.
 
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ijroorda

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Joined
Oct 17, 2011
Messages
146
Location
Pella, Iowa
Anybody know what brand McMaster's "European-shape" plugs and couplers are? I know their industrial interchange push-to-connect couplers are Dixon, but I haven't ordered any European stuff from them before.
 

hawkerxj

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Joined
Jul 19, 2016
Messages
65
Location
Miramichi NB
Anybody know what brand McMaster's "European-shape" plugs and couplers are? I know their industrial interchange push-to-connect couplers are Dixon, but I haven't ordered any European stuff from them before.
I realise this is an old thread, but I just ordered some European Shape couplers from McMaster, they were all CEJN 320 Series(made in Sweden). The ID of the plugs measure right around 0.300".
Hawker
 

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