[AT] Pressure drop?

[Gene Dotson]

    Farmer;
    I have one concern about running the line outside. That is the 
possibility of condensation freezing in the line. Will you be using a water 
trap ahead of the line? Will it be buried below the freezing level? If the 
air is still warm when it enters the the outside line, it will be cooled 
passing through the line allowing the moisture to condense and possibly 
freezing.
    Of course, with the hoseless transfer system, this will not be a 
concern. Just program the system to not transfer any water molecules and 
have pure, dry air.
    As I understand, the Essex Tri-Directional used this same system for 
fuel delivery while running.

                    Gene



----- Original Message ----- 
From: "Francis Robinson" <robinson at svs.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Wednesday, January 30, 2008 3:48 PM
Subject: Re: [AT] Pressure drop?


>
>
> --On Wednesday, January 30, 2008 2:19 PM -0500 charlie hill
> <chill8 at suddenlink.net> wrote:
>
>> Gene PEX fittings have been re-designed.  I guess the old mechanical
>> fittings are still around but the new way involves using a tool that
>> stretches the pipe.  Then it is slid over the fitting.  The PEX shrinks
>> back  to it original size and supposedly won't come off.
>>
>> Charlie
>> ----- Original Message -----
>> From: "Gene Waugh Elgin, Illinois USA" <gwaugh at wowway.com>
>> To: "Antique tractor email discussion group"
>> <at at lists.antique-tractor.com> Sent: Wednesday, January 30, 2008 2:00 PM
>> Subject: Re: [AT] Pressure drop?
>>
>>
>>> What has interested me the most in this thread is the use of
>>> PEX--farmer, someone asked what fittings you will be using?  I think
>>> they make barbed fittings that use a compressed band to hold them
>>> together, and perhaps they have a threaded compression sort, as was used
>>> with the old Quest.  (Qest?, memory is failing) piping, which turned out
>>> to burn many, many people.  Biggest problem was the fittings, especially
>>> aluminum compression rings for the crimped fittings.  Especially on the
>>> hot side, the aluminum would work-harden and eventually let go.  There
>>> were also rings of a copper alloy, and I don't think they were nearly
>>> the problem.  Sploosh!  We would test it hydraulically to about 160 psi.
>>>
>>> Using PEX for air doesn't bother me anywhere near as much as PVC---at
>>> least you won't have shards flying around, just a big ol whipping snake
>>> perhaps!  Again, I am curious as to the fittings used.  Unless you
>>> simply have the 1/2" lying around and want to use it, I sure think I
>>> would go with at least 3/4" for such a long run.  Personal opinion.
>>>
>>>
>>> /Gene
>>> Gene Waugh
>>> Elgin, Illinois USA/
>
>
> *******************************************************
>
>
> Hi Gene:
>
> Comparing the old Qest (Polybutylene) to PEX is about like comparing my
> body to a super model...   ;-)
> I never used any Qest because I didn't like the look, feel or price of it
> back when it first came out. PEX systems (cross linked polyethylene) on 
> the
> other hand have been used extensively in both regular plumbing, industrial
> plumbing of all sorts of stuff (some of it pretty nasty) and hydronic
> heating systems both in or under wood floors and in poured concrete and 
> mud
> bed systems. Under wood floors they make an aluminum panel that has a
> little trough made in the center to hold the pipe and you screw the panel
> up against the floor to hold the pipe and spread the heat. It is a whole
> new ball game and so far I have not found any real disadvantages to it 
> (I'm
> sure there are some). There is one... I paid over a hundred bucks for the
> crimping tool for 1/2" and 3/4".   :-)    The kind I'm using I bought at
> Menards and almost the identical stuff is at Lowes. There are minor
> variations between brands but I think almost everything will cross over. A
> few things will not. Scott has bought all of his at Lowes but is borrowing
> my crimping tool. He is re-plumbing his house and plumbing the new
> addition. He is using red for all hot water lines and blue for all cold
> water lines. He also has a batch of white but I'll be danged if I can
> recall right now what he is using it for. You use a heavy crimp on ring
> then check each one with a "go - no go" gauge for the system we are using.
> As far as it becoming a whipping snake if that concerns you then you
> shouldn't use an air hose...   ;-)   ;-)
> I'm using 1/2" because it is cheap, I have it and I know it will carry
> more air than my smaller air hose.   :-)
> I will be feeding from the farm shop to the wood shop and will be running
> it directly to a 20 gallon tank. The tank will act as a buffer and also
> have a good check valve at the inlet so it (hopefully) will always have 
> air
> in it for quick little jobs even when the compressor is off. Eventually I
> hope to have the farm shop compressor in a heated environment so it can be
> on all of the time. At this time I have to shut it down in very cold
> weather for fear of it not starting due to being so stiff (I have the same
> problem myself).   :-)    I already have a small compressor in the wood
> shop that will run a nail gun/stapler if I need it.
>
> BTW, here is a link to a good PEX information page that shows the various
> connection methods available and cross compatibility:
> <http://www.pexinfo.com/>
>
>
>
> --
> "farmer"
>
>
> Francis Robinson
> Central Indiana, USA
> Robinson at svs.net
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