SOT: Anyone know of a part # for non conductive AW32 hydraulic fluid?
m6onz5a
it. Looking for either a 5 gallon or 55 gallon part #.
TIA
Chas
Scott Dorsey
>It has to be non conductive. I have a Castrol part # but no one has
>it. Looking for either a 5 gallon or 55 gallon part #.
I didn't know ANY hydraulic fluids were conductive.
If you have a Castrol number, you're going to have to get it from a Castrol
industrial products supplier, not from an automotive products supplier.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
m6onz5a
Apparently Amilie brand won't certify their fluid as non conductive,
and Castrol is the only brand that will certify as far as I can tell.
Oh well.
hls
"Scott Dorsey" <klu...@panix.com> wrote in message
news:he6tvr$459$1...@panix2.panix.com...
> m6onz5a <cor...@comcast.net> wrote:
>>It has to be non conductive. I have a Castrol part # but no one has
>>it. Looking for either a 5 gallon or 55 gallon part #.
>
> I didn't know ANY hydraulic fluids were conductive.
Depends upon the strict definition of conductive. Polyglycol fluids are
polar and
can absorb water, making them somewhat conductive. The alcoholic end of
the
polyglycol hydroxyl can react with very active metals whether water is
present or
not.
Silicone fluids, which I understand have some application in hydraulic
fluids, cant
do that. Neither can hydrocarbon oils, but their properties might not be so
easily
adapted to hydraulic fluids.
Scott Dorsey
>On Nov 20, 3:25=A0pm, klu...@panix.com (Scott Dorsey) wrote:
>> m6onz5a =A0<corv...@comcast.net> wrote:
>> >It has to be non conductive. I have a Castrol part # but no one has
>> >it. Looking for either a 5 gallon or 55 gallon part #.
>>
>>
>> If you have a Castrol number, you're going to have to get it from a Castr=
>ol
>> industrial products supplier, not from an automotive products supplier.
>
>and Castrol is the only brand that will certify as far as I can tell.
>Oh well.
How nonconductive does it have to be? Alternately, can you use a
transformer oil, or does it need particular flow characteristics?
Tegger
news:NNydnRorLdORhZrW...@giganews.com:
> The alcoholic end of the polyglycol hydroxyl can react with very active
> metals whether water is present or not.
Would that be specifically on account of the oxygen bound up in the alcohol
molecule?
--
Tegger
m6onz5a
I'm not sure how non conductive it has to be, but the fluid is being
used in Cherrypickers that work on electrical lines. (I'm assuming
that's why it has to be nonconductive)
Scott Dorsey
And, is this what causes the hygroscopic nature of brake fluid?
And, why in God's name does anyone use that stuff?
hls
"Tegger" <inv...@invalid.inv> wrote in message
news:Xns9CC9CF61...@208.90.168.18...
Because of the hydrogen bound through the oxygen in the hydroxyl group.
Metals above hydrogen on the activity series can displace hydrogen.
Potassium and sodium react very quickly, with generation of heat and release
of hydrogen gas. Lower metals like magnesium and aluminum react slower
under the same conditions, but the results are corrosion of the metal
involved.
hls
> Tegger <inv...@invalid.inv> wrote:
>>"hls" <h...@nospam.nix> wrote in
>>news:NNydnRorLdORhZrW...@giganews.com:
>>
>>> The alcoholic end of the polyglycol hydroxyl can react with very active
>>> metals whether water is present or not.
>>
>>Would that be specifically on account of the oxygen bound up in the
>>alcohol
>>molecule?
>
> And, is this what causes the hygroscopic nature of brake fluid?
>
> And, why in God's name does anyone use that stuff?
> --scott
They are cheap, have good boiling points, etc. The hygroscopic nature is
caused
by the hydroxyl groups on the polyol and by the ether groups in the polymer
backbone.
It isnt always bad that a fluid can absorb a little water. If it did not,
then any water
that might enter the system would be forced onto the metal surface, again
creating a
corrosion cell.
But as the water absorbed into the glycol increases, the systems can become
significantly
corrosive, since corrosion is an electrochemical reaction and increases as
the conductivity
increases.
hls
"m6onz5a" <cor...@comcast.net> wrote in message
news:05fe19f4-8cc6-4351-a9fa-
I'm not sure how non conductive it has to be, but the fluid is being
used in Cherrypickers that work on electrical lines. (I'm assuming
that's why it has to be nonconductive)
************
I'll bet you are right. That certification then becomes very important for
liability
reasons.
Scott Dorsey
>
>I'm not sure how non conductive it has to be, but the fluid is being
>used in Cherrypickers that work on electrical lines. (I'm assuming
>that's why it has to be nonconductive)
I would think actual conductivity wouldn't be important, then, since the
stuff is going through conductive pipes and conductive metal actuators
anyway. I'd think that if you have current flowing through the frame of
the cherrypicker, the conductivity of the fluid would be the least of your
worried (and the flame point of the fluid being much more important).
BUT, if the customer says nonconductive or the manufacturer of the equipment
says nonconductive or the code says nonconductive, call a Castrol industrial
products dealer and get them to order the stuff for you. The minimum may
turn out to be a drum, but that's okay because you can bill the customer for
it and they'll pay it because nobody else in town will have it either.
Tegger
news:sdSdnVvdf8cdZJrW...@giganews.com:
>
> "Tegger" <inv...@invalid.inv> wrote in message
> news:Xns9CC9CF61...@208.90.168.18...
>> "hls" <h...@nospam.nix> wrote in
>> news:NNydnRorLdORhZrW...@giganews.com:
>>
>>
>>> The alcoholic end of the polyglycol hydroxyl can react with very
>>> active metals whether water is present or not.
>>
>>
>> Would that be specifically on account of the oxygen bound up in the
>> alcohol
>> molecule?
>>
>>
>>
>>
>
> Because of the hydrogen bound through the oxygen in the hydroxyl
> group. Metals above hydrogen on the activity series can displace
> hydrogen. Potassium and sodium react very quickly, with generation of
> heat and release of hydrogen gas. Lower metals like magnesium and
> aluminum react slower under the same conditions, but the results are
> corrosion of the metal involved.
>
You can tell I'm no chemist. I always thought that corrosion was oxidation,
meaning the metal binds with oxygem and changes to an oxide.
You're telling me that there exists corrosion where hydrogen binds with the
metal and creates, what, a hydride?
--
Tegger