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Thank you, Bob.
For these I believe the problem may have been the combination of tight
tolerances and oxidation on the plugs. After putting the plugs on the wire
wheel and "shining them up" they seem to be working OK again (I also had
lubed the sockets previously but that did not seem to make a difference).
We will see if the "solution" lasts for a while.
At least now I can disconnect them and change tools without blowing all of
the pressure out of the lines first, which is a great improvement to say
the least. ;-)
On Sat, Jul 5, 2025 at 6:36=E2=80=AFPM Bob Spidell <bspidell@comcast.net> w=
rote:
> I think these issues are universal. I have a bunch of these in 1/4" and
> 3/8" pipe size; most are brass from Harbor Freight--automotive style are
> getting harder to find--but some are steel from various brands and all do
> the same thing to some extent. I think it's partly due to wear but might =
be
> due to just plain shitty manufacturing and specs. If I remember, I try to
> make/break connections before I turn the air from the compressor on; it's
> easier. Maybe the 'industrial' type work better?
>
> FWIW, I have a couple tractors with similar type of quick connects for
> hydraulic lines, except larger pipe size and are designed to break away i=
f
> you start moving before disconnecting. I bought some cheap sockets--made =
in
> you-know-where--and one of them is now failing to hold connection (though
> the lines are shot and I need to try new before I totally blame the
> connector).
>
> Bob
>
> On 7/4/2025 7:52 PM, Douglas Shook wrote:
>
> Hi guys,
>
> I have been using 3/8" Tru-Flate (automotive) quick connects for all the
> air hoses in my shop for decades.
>
> I have a bunch of old brass female sleeve lock couplings that require you
> to move the outer sleeve to connect and disconnect the plug. They are
> working fine after decades of use.
>
> I also have a bunch of newer plated steel Tru-flate ones that are
> push-to-connect that are supposed to be more convenient, but they are
> getting increasingly difficult to disconnect. I have one that I have to
> remove all air pressure before it will release the plug.
>
> I have purchased all of these from McMaster-Carr, they are genuine
> Tru-Flate 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-connect 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 whe=
n
> you want to change a tool, as you might imagine.
>
> I have seen some universal sleeve lock couplings that are supposed to wor=
k
> with Tru-Flate plugs, but I have not seen them with 1/4" pipe and 3/8"
> couplings.
>
> I am attaching a link from McMaster:
>
>
> https://www.mcmaster.com/products/couplings/tru-flate-quick-disconnect-ho=
se-couplings-for-air/
>
> Thank you in advance for any help or information you may have.
>
> Best,
>
> Doug
>
>
> _______________________________________________
>
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">Tha=
nk you, Bob.=C2=A0</div><div class=3D"gmail_default" style=3D"font-size:sma=
ll"><br></div><div class=3D"gmail_default" style=3D"font-size:small">For th=
ese I believe the problem may have been the combination of tight tolerances=
and oxidation on the plugs. After putting the plugs on the wire wheel and =
"shining=C2=A0them up" they seem to be working OK again (I also h=
ad lubed the=C2=A0sockets previously but that did not seem to make a=C2=A0d=
ifference). We will see if the "solution" lasts for a while.=C2=
=A0</div><div class=3D"gmail_default" style=3D"font-size:small"><br></div><=
div class=3D"gmail_default" style=3D"font-size:small">At least now I can di=
sconnect them and change tools without blowing all of the pressure out of t=
he lines first, which is a great improvement to say the least. ;-)=C2=A0</d=
iv></div><br><div class=3D"gmail_quote gmail_quote_container"><div dir=3D"l=
tr" class=3D"gmail_attr">On Sat, Jul 5, 2025 at 6:36=E2=80=AFPM Bob Spidell=
<<a href=3D"mailto:bspidell@comcast.net";>bspidell@comcast.net</a>> w=
rote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0p=
x 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
=20
=20
=20
<div>
I think these issues are universal. I have a bunch of these in 1/4"=
;
and 3/8" pipe size; most are brass from Harbor Freight--automotive
style are getting harder to find--but some are steel from various
brands and all do the same thing to some extent. I think it's partl=
y
due to wear but might be due to just plain shitty manufacturing and
specs. If I remember, I try to make/break connections before I turn
the air from the compressor on; it's easier. Maybe the 'industr=
ial'
type work better?<br>
<br>
FWIW, I have a couple tractors with similar type of quick connects
for hydraulic lines, except larger pipe size and are designed to
break away if you start moving before disconnecting. I bought some
cheap sockets--made in you-know-where--and one of them is now
failing to hold connection (though the lines are shot and I need to
try new before I totally blame the connector).<br>
<br>
Bob<br>
<br>
<div>On 7/4/2025 7:52 PM, Douglas Shook
wrote:<br>
</div>
<blockquote type=3D"cite">
=20
<div dir=3D"ltr">
<div class=3D"gmail_default" style=3D"font-size:small">Hi guys,</di=
v>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<div class=3D"gmail_default" style=3D"font-size:small">I have been
using 3/8" Tru-Flate=C2=A0(automotive) quick connects for al=
l the
air hoses in my shop for=C2=A0decades.</div>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<div class=3D"gmail_default" style=3D"font-size:small">I have a
bunch of old brass female sleeve lock couplings that require
you to move the outer sleeve to connect and disconnect the
plug. They are working fine after decades of use.</div>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<div class=3D"gmail_default" style=3D"font-size:small">I also have =
a
bunch of newer plated steel Tru-flate ones that are
push-to-connect that are supposed to be more convenient, but
they are getting increasingly difficult to disconnect. I have
one that I have to remove all air pressure before it will
release the plug.</div>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<div class=3D"gmail_default" style=3D"font-size:small">I have
purchased all of these from McMaster-Carr, they are genuine
Tru-Flate products.=C2=A0</div>
<div class=3D"gmail_default" style=3D"font-size:small">I have tried
lubricating them, but it does not seem to help.</div>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<div class=3D"gmail_default" style=3D"font-size:small">I also have
tried to find new Tru-Flate connectors without the
push-to-connect feature, but cannot locate them for 1/4" pip=
e
and 3/8" coupling.=C2=A0</div>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<div class=3D"gmail_default" style=3D"font-size:small">Do any of yo=
u
have experience with this problem? It is quite annoying when
you want to change a tool, as you might imagine.</div>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<div class=3D"gmail_default" style=3D"font-size:small">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" pip=
e
and 3/8" couplings.</div>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<div class=3D"gmail_default" style=3D"font-size:small">I am
attaching a link from McMaster:</div>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<div class=3D"gmail_default" style=3D"font-size:small"><a href=3D"h=
ttps://www.mcmaster.com/products/couplings/tru-flate-quick-disconnect-hose-=
couplings-for-air/" target=3D"_blank">https://www.mcmaster.com/products/cou=
plings/tru-flate-quick-disconnect-hose-couplings-for-air/</a></div>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<div class=3D"gmail_default" style=3D"font-size:small">Thank you in
advance for any help or information you may have.</div>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<div class=3D"gmail_default" style=3D"font-size:small">Best,</div>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<div class=3D"gmail_default" style=3D"font-size:small">Doug</div>
<div class=3D"gmail_default" style=3D"font-size:small"><br>
</div>
<br>
</div>
</blockquote>
</div>
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</blockquote></div>
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