Air Couplings That Don't BLOW???

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Anybody have a source for decently-priced compressed-air hose couplings (quick-connect) that don't SUCK (or don't BLOW)?I made the mistake of buying them from HFT and it seems like they ALL leak whenever you move them. I swear, I hear those things hissing in my nightmares...Thanks in advance.
Reply:I’ve been using the Milton high flow couplers. 762 maybe or 764?You can get them at Northern tool. The stuff they sell at Harbor freight and Home Depot is junk. Miller 211Hypertherm PM 451961 Lincoln Idealarc 250HTP 221  True Wisdom only comes from Pain.
Reply:One thing that really helps with the life of the couplers is to have a short whip hose on any impact type tool. Air hammers and needle scalers are the worst. I use the Parker push-lok hose, no clamps or crimp fittings.
Reply:Originally Posted by 12V71I use the Parker push-lok hose, no clamps or crimp fittings.
Reply:Originally Posted by jpump5Do those yellow plastic rings on the barb fittings do anything?
Reply:Originally Posted by jpump5Do those yellow plastic rings on the barb fittings do anything?
Reply:Originally Posted by Lis2323I'm certain they're not functional. Just cosmetic  Sent from my iPhone using Tapatalk
Reply:The old HF 3/8" couplers suck, but the newer "Merlin" automotive-style couplers are bit better (slightly better fit).  I don't use anything smaller than the 3/8" size stuff.For the least restriction if you have air-hog tools, Milton G-style high flow couplers and fittings.   Fittings are cheap on Amazon.  Couplers sometimes Ebay has them cheaper, sometimes Amazon.  Buying in 5- or 10-packs is cheaper-per-unit than buying singles. 1st on WeldingWeb to have a scrolling sig! HTP Invertig 400HTP Invertig 221HTP ProPulse 300HTP ProPulse 200 x2HTP ProPulse 220MTSHTP Inverarc 200TLP HTP Microcut 875SC
Reply:Air fittings are well worth the "name brand" investment,,I have been VERY happy with anything Parker, or Milton.AND, it seems like when I have purchased Milton, it is very low cost,, approaching HF,,I would only buy Northern if they stocked Milton,, which is possible.
Reply:Originally Posted by SweetMKAir fittings are well worth the "name brand" investment,,
Reply:Originally Posted by KelvinAnybody have a source for decently-priced compressed-air hose couplings (quick-connect) that don't SUCK (or don't BLOW)?Thanks in advance.
Reply:My shop is for general repairs of my own, so it's stocked with the cheapy Milton couplers... high flows on the half inch lines and just the regular M fittings on the 3/8. If I was going to start over I'd go all high flow. When I was painting we used Devillbis high flows. I have no idea what they'd be worth now (probably quite a bit more than the Miltons) but they were a very high quality coupler/fitting that didn't blow off or leak.250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Reply:I am not an industrial user by a long shot but I do use air at pressures between about 80 and 120psi. I use what you would probably call "automotive" couplers - Nitto type - and, at least for me, they don't leak or pop.US connectors seem to use NPT whereas most others use BSP. The problem is that these threads are very close - 1/4" NPT is 18 threads per inch and 1/4" BSP is 19 threads per inch. I complained once that the optional air filter for a plasma cutter was NPT whereas the connection on the cutter was BSP. I told them I could only screw the connector in one or two threads by hand - they told me to user a spanner.So, I have no problem with Nitto couplers so long as suppliers supply the correct thread. The image is of the Nitto style but not made by Nitto.Jack Attached Images
Reply:Even Nitto brand. One side has BSPT and the other NPT . NICE They must sell both in both thread styles. These were suggested matches on Amazon. Different thread. https://www.amazon.com/Nitto-Kohki-2...CH609SKY8N07RThttps://www.amazon.com/Nitto-Kohki-2...ZQRWT3H9QQ3ZJKLast edited by danielplace; 06-01-2021 at 07:29 AM.
Reply:Yes, Nitto and other couplers are available with both threads - NPT and BSP. NPT is generally available in North America and BSP elsewhere. I forget what the specification says but I think the male threads should be tapered but not all are meaning that a thread sealer is required.Jack
Reply:Thanks, everyone, for all the great suggestions and helpful intel. I appreciate it. I guess if I go with Miltons (or whatever manufacturer), I need to buy both the female coupler and the male fittings that mate up with it.
Reply:the other thing if you use the brass couplers, don't get in the habit of dropping them on the air hose on the ground.  deforms the brass coupler and start to leak air.lincoln 125spmonkey wards 250 ac/dcmiller 211 w/spool gunahp  200 sx tiglotos ltp5000dof course duramax diesel
Reply:Back to the push lok hose & fittings, I've got one I've used since about 1979 or 80, still going strong on my 1/2" impact that spent most of its life on 150 psi, I think it would take a very healthy man to pull the hose off of the fitting. 12V iss also right, whip hoses are worth their weight in gold when it comes to impact tools , air hammers & the likes.Last edited by CAVEMANN; 06-03-2021 at 10:53 PM.IMPEACH BIDEN!NRA LIFE MEMBERUNITWELD 175 AMP 3 IN1 DCMIDSTATES 300 AMP AC MACHINEGOD HELP AMERICA!“Freedom is never more than one generation away from extinction.We didn’t pass it to our children in the bloodstream".RONALD REAGAN
Reply:Originally Posted by Lis2323Here you go.  I tested it to 145 PSIDefinitely does not blow
Reply:Originally Posted by KelvinBy "BLOW," I meant "leak/hiss/blow out air every time you move the coupling, hose or tool"
Reply:As far as whip hoses on all of the tools. I've tried that, but I only use rubber hose and usually it will bend and get weak at the tool. I guess I could look for a spring protector......"Where's Stick man????????" - 7A749"SHHHHHH!! I sent him over to snag that MIC-4 while tbone wasn't looking!" - duaneb55"I have bought a few of Tbone's things unlike Stick-Man who helps himself" - TozziWelding"Stick-man"
Reply:Originally Posted by Stick-manAs far as whip hoses on all of the tools. I've tried that, but I only use rubber hose and usually it will bend and get weak at the tool. I guess I could look for a spring protector......
Reply:Originally Posted by Stick-manAs far as whip hoses on all of the tools. I've tried that, but I only use rubber hose and usually it will bend and get weak at the tool. I guess I could look for a spring protector......
Reply:after 35 years doing bodywork its dropping the coupler and on the floor that deforms them as stated above.  amazing how much that helps!lincoln 125spmonkey wards 250 ac/dcmiller 211 w/spool gunahp  200 sx tiglotos ltp5000dof course duramax diesel
Reply:Originally Posted by Lis2323...or a swivel coupling.Originally Posted by KelvinDo those leak, Lis? How long do they last before they start leaking? How bad do they hurt you on price? Manufacturer? I might try a few...