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wet thread protectant

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Stormin Mormon

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Apr 30, 2013, 10:01:50 AM4/30/13
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I work on equipment, where there is a valve cap that gets cold and wet. the threads tend to rust, and make it impossible to remove the valve cap.

I've tried WD, PB Blaster (they rapidly evaporate) and a couple types of grease. What can be used to keep these threads from rusting?

Makes me wonder if Rectorseal #5 slow set is the choice? Marine grease? Dielectric grease? White lithium grease?
.
Christopher A. Young
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The Daring Dufas

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Apr 30, 2013, 10:12:25 AM4/30/13
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On 4/30/2013 9:01 AM, Stormin Mormon wrote:
> I work on equipment, where there is a valve cap that gets cold and
> wet. the threads tend to rust, and make it impossible to remove the
> valve cap.
>
> I've tried WD, PB Blaster (they rapidly evaporate) and a couple types
> of grease. What can be used to keep these threads from rusting?
>
> Makes me wonder if Rectorseal #5 slow set is the choice? Marine
> grease? Dielectric grease? White lithium grease? .

Teflon pipe dope is what I've used on refrigeration service valve caps
on the suction side. I haven't had one stick with a thin film of it on
the service valve threads. ^_^

TDD

Paul Drahn

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Apr 30, 2013, 11:22:29 AM4/30/13
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Valve cap? Do you mean like on a tire valve? If so, all the valves I
have seen are brass. Most cap I have seen in the last 20 years are
plastic. Do you have something else in mind?

In case you have steel on steel, or something like that getting wet, I
would suggest anti-sieze compound of some type.

Paul

The Daring Dufas

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Apr 30, 2013, 2:48:10 PM4/30/13
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Paul, take a look at the valves in the picture, notice the steel caps on
three of the valves. those caps cover the valve stem which is a 1/4"
square drive stem which needs a wrench to turn it. Some service valves
are made of steel with steel caps which can rust in place. ^_^

http://www.muellerindustries.com/products/hvac-refrigeration/refrigeration-valves/packed-line-valves

http://tinyurl.com/cc8wp7v

TDD

cl...@snyder.on.ca

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Apr 30, 2013, 8:35:04 PM4/30/13
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Better yet, replace the cap with a non-ferrous one - or a plastic
one. Anyiseize works well if you must stick with a ferrous cap.

Stormin Mormon

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Apr 30, 2013, 8:55:49 PM4/30/13
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The brass and plastic caps also rot on. One more example of you offering advice where you don't have experience.
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Christopher A. Young
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<cl...@snyder.on.ca>
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Stormin Mormon

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Apr 30, 2013, 8:56:21 PM4/30/13
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Sounds like the voice of experience. Thanks.
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Christopher A. Young
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"The Daring Dufas" <the-dari...@stinky-finger.net> wrote in message news:kloja9$92k$1...@dont-email.me...

Stormin Mormon

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Apr 30, 2013, 8:57:46 PM4/30/13
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Yes, that, or over the controlling stem.
In either case, "should" not be under
pressure.

I'm working on steel threads, and some
times brass. Caps can be steel, brass,
or plastic. With steel threads, all three
caps rot on.
.
Christopher A. Young
Learn more about Jesus
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"Paul Drahn" <pdr...@webformixair.com>
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Stormin Mormon

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Apr 30, 2013, 9:02:17 PM4/30/13
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This is fairly close, the black cap is what rots on.
http://upload.ecvv.com/upload/Product/20123/China_refrigeration_valves201232849321.JPG

.
Christopher A. Young
Learn more about Jesus
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"The Daring Dufas" <the-dari...@stinky-finger.net> wrote in message news:klp3f8$eis$1...@dont-email.me...

The Daring Dufas

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Apr 30, 2013, 11:47:47 PM4/30/13
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On 4/30/2013 8:02 PM, Stormin Mormon wrote:
> This is fairly close, the black cap is what rots on.
> http://upload.ecvv.com/upload/Product/20123/China_refrigeration_valves201232849321.JPG
>

That black cap is a Bakelite or fiber filled plastic, not steel and the
Teflon paste will work for those too. You can put a dab on your finger
and make like a proctologist to the cap making sure all the threads have
a light coat of Teflon paste. ^_^

TDD

Stormin Mormon

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May 1, 2013, 6:28:00 AM5/1/13
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Just goes to show that I'm bipartisan, open minded,
and certainly not racist. I'm using white Teflon paste
on black caps, so that they have freedom of motion.

Thank you for the real world experience, I'll try and
find some white teflon paste to use.
.
Christopher A. Young
Learn more about Jesus
www.lds.org
.
.
"The Daring Dufas" <the-dari...@stinky-finger.net> wrote in message news:klq331$cjm$1...@dont-email.me...

The Daring Dufas

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May 1, 2013, 7:19:35 AM5/1/13
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On 5/1/2013 5:28 AM, Stormin Mormon wrote:
> Just goes to show that I'm bipartisan, open minded,
> and certainly not racist. I'm using white Teflon paste
> on black caps, so that they have freedom of motion.
>
> Thank you for the real world experience, I'll try and
> find some white teflon paste to use.
> .

A little dab 'l do ya. ^_^

TDD

Stormin Mormon

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May 1, 2013, 7:54:26 AM5/1/13
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My Dad used that same expression, when I was a kid. That's an old memory. Thank you.
.
Christopher A. Young
Learn more about Jesus
www.lds.org
.
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"The Daring Dufas" <the-dari...@stinky-finger.net> wrote in message news:klqti2$v89$2...@dont-email.me...

TimR

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May 1, 2013, 8:07:44 AM5/1/13
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I've mentioned it before, but I use Teflon tape for similar uses.

It seems to be as good as antiseize but less messy.

I think I even have some on trumpet valve caps. (very fine threads, often left in place for long periods of time, but removal is necessary for lubrication)

The Daring Dufas

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May 1, 2013, 2:39:05 PM5/1/13
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On 5/1/2013 6:54 AM, Stormin Mormon wrote:
> My Dad used that same expression, when I was a kid. That's an old memory. Thank you.
> .

It was from the Brylcreem commercial jingle back when guys put greasy
kid stuff in their hair to hold it in place before the hairspray called
things like "The Dry Look" came into fashion. ^_^

https://en.wikipedia.org/wiki/Brylcreem

http://overlookedgems.blogspot.com/2006/04/dry-look.html

https://www.youtube.com/watch?v=Q0hFpO19ecA

TDD

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