Hydraulic components (was Re: [AT] (no subject)

[charlie hill]

Hi Carl,

I have a friend that is a union trained multi-crafted master mechanic in a 
paper mill.  I believe that he is the one that warned me many years ago 
about using galvanized pipe in fuel oil/hydraulic oil applications.  The 
reasons might or might not be the same for gas.  I will try to remember to 
ask my friend.  If he is indeed the person that told me I'll let you know 
what his  explaination is.

Charlie


----- Original Message ----- 
From: "carl gogol" <cgogol at twcny.rr.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Sunday, January 09, 2005 2:37 PM
Subject: Re: Hydraulic components (was Re: [AT] (no subject)


> The topic of using galvanized pipe for natural gas or propane caught my 
> attention enough to do some searching on the internet and although there 
> are a lot of reasons to not trust anything, I found a site that concerned 
> technology transfer to smaller gas suppliers that do not have their own 
> corrosion engineers on staff.  From what I gathered, galvanized pipe is 
> not good enough to be used underground for gas distribution, better 
> coatings are required or a system of sacrificial anodes have to be 
> installed if black steel is used instead of the preferred plastic systems. 
> 16" above ground galvanized pipe is OK, as long as it is electrically 
> isolated and not mixed with black pipe.  Mixing creates a dissimilar 
> material joint that turns the galvanized pipe into an anode which leads to 
> corrosion.
> Carl Gogol
> Manlius, NY
> (2) AC D-14, AC 914H
> Simplicity 3112 & 7116
> Kubota F-2400
>
> ----- Original Message ----- 
> From: "Ralph Goff" <alfg at sasktel.net>
> To: "Antique tractor email discussion group" 
> <at at lists.antique-tractor.com>
> Sent: Sunday, January 09, 2005 1:14 PM
> Subject: Re: Hydraulic components (was Re: [AT] (no subject)
>
>
>>
>>>> Sounds like one of the old  wives tales to me. I have seen galvanized 
>>>> pipe
>> on
>>> lots of hydraulic systems, I  have one out in the yard right now. The 
>>> only
>>> thing that I would think is that  its actually a zinc coating and that
>> could
>>> work like the zinc plates around a  Prop on ships and would be eaten 
>>> away
>> by
>>> electrolyses . I don't see where this  would hurt anything but the pipe
>> would not
>>> last as long as black iron pipe.  However how long is that, most likely
>> longer
>>> than we would have to worry  about.
>>
>> I can't say that I have ever heard any warnings on what kind of pipe to 
>> use
>> for hydraulic or fuel oil systems. I know I have galvanized pipe outlet 
>> on
>> my diesel storage tank, probably for about 25 years now.
>> The front end loader on my Massey has what appears to be ordinary iron 
>> pipe
>> for the hydraulic lines to the bucket. They have been on there since 
>> before
>> I got the tractor and have not given any problems.
>>
>> Ralph in Sask.
>> http://lgoff.sasktelwebsite.net/
>
>
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