Subject: [Shop-talk] Air couplings will not release

From: Old Dirtbeard <[email-masked]>
Date: Sat, 5 Jul 2025 03:05:55 +0000

--===============6408476988720356616==
Content-Language: en-US
	boundary="_000_DM4PR12MB5118619B1A6E03C65E8994D7D84DADM4PR12MB5118namp_"

--_000_DM4PR12MB5118619B1A6E03C65E8994D7D84DADM4PR12MB5118namp_
Content-Transfer-Encoding: quoted-printable

Hi guys,

I have been using 3/8" Tru-Flate (automotive) quick connects for all the ai=
r hoses in my shop for decades.

I have a bunch of old brass female sleeve lock couplings that require you t=
o move the outer sleeve to connect and disconnect the plug. They are workin=
g fine after decades of use.

I also have a bunch of newer plated steel Tru-flate ones that are push-to-c=
onnect that are supposed to be more convenient, but they are getting increa=
singly difficult to disconnect. I have one that I have to remove all air pr=
essure before it will release the plug.

I have purchased all of these from McMaster-Carr, they are genuine Tru-Flat=
e products.
I have tried lubricating them, but it does not seem to help.

I also have tried to find new Tru-Flate connectors without the push-to-conn=
ect feature, but cannot locate them for 1/4" pipe and 3/8" coupling.

Do any of you have experience with this problem? It is quite annoying when =
you want to change a tool, as you might imagine.

I have seen some universal sleeve lock couplings that are supposed to work =
with Tru-Flate plugs, but I have not seen them with 1/4" pipe and 3/8" coup=
lings.

I am attaching a link from McMaster:

https://www.mcmaster.com/products/couplings/tru-flate-quick-disconnect-hose=
-couplings-for-air/

Thank you in advance for any help or information you may have.

Best,

Doug

--_000_DM4PR12MB5118619B1A6E03C65E8994D7D84DADM4PR12MB5118namp_
Content-Transfer-Encoding: quoted-printable

<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
1">
<style type=3D"text/css" style=3D"display:none;"> P {margin-top:0;margin-bo=
ttom:0;} </style>
</head>
<body dir=3D"ltr">
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
Hi guys,</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
<br>
</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
I have been using 3/8&quot; Tru-Flate&nbsp;(automotive) quick connects for =
all the air hoses in my shop for&nbsp;decades.</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
<br>
</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
I have a bunch of old brass female sleeve lock couplings that require you t=
o move the outer sleeve to connect and disconnect the plug. They are workin=
g fine after decades of use.</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
<br>
</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
I also have a bunch of newer plated steel Tru-flate ones that are push-to-c=
onnect that are supposed to be more convenient, but they are getting increa=
singly difficult to disconnect. I have one that I have to remove all air pr=
essure before it will release the
 plug.</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
<br>
</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
I have purchased all of these from McMaster-Carr, they are genuine Tru-Flat=
e products.&nbsp;</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
I have tried lubricating them, but it does not seem to help.</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
<br>
</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
I also have tried to find new Tru-Flate connectors without the push-to-conn=
ect feature, but cannot locate them for 1/4&quot; pipe and 3/8&quot; coupli=
ng.&nbsp;</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
<br>
</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
Do any of you have experience with this problem? It is quite annoying when =
you want to change a tool, as you might imagine.</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
<br>
</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
I have seen some universal sleeve lock couplings that are supposed to work =
with Tru-Flate plugs, but I have not seen them with 1/4&quot; pipe and 3/8&=
quot; couplings.</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
<br>
</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
I am attaching a link from McMaster:</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
<br>
</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(17, 85, 204);" class=3D"ele=
mentToProof">
<a style=3D"color: rgb(17, 85, 204);" data-saferedirecturl=3D"https://www.g=
oogle.com/url?q=3Dhttps://www.mcmaster.com/products/couplings/tru-flate-qui=
ck-disconnect-hose-couplings-for-air/&amp;source=3Dgmail&amp;ust=3D17517710=
02244000&amp;usg=3DAOvVaw31xw3f-org81myDKFCMaz-" class=3D"OWAAutoLink" id=
=3D"OWA15dc8fb4-efcc-805f-5377-6945fe99d03c" target=3D"_blank" href=3D"http=
s://www.mcmaster.com/products/couplings/tru-flate-quick-disconnect-hose-cou=
plings-for-air/">https://www.mcmaster.com/<wbr>products/couplings/tru-flate=
-<wbr>quick-disconnect-hose-<wbr>couplings-for-air/</a></div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
<br>
</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
Thank you in advance for any help or information you may have.</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
<br>
</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
Best,</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
<br>
</div>
<div style=3D"text-align: left; text-indent: 0px; font-family: Calibri, Hel=
vetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class=3D"element=
ToProof">
Doug</div>
<div class=3D"elementToProof"><br>
</div>
<div id=3D"Signature">
<div id=3D"divtagdefaultwrapper"></div>
</div>
</body>
</html>

--_000_DM4PR12MB5118619B1A6E03C65E8994D7D84DADM4PR12MB5118namp_--

--===============6408476988720356616==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________

[email-masked]
Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/archive

--===============6408476988720356616==--