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<p>I installed many propane systems on pickups trucks and tractors
back when propane was only 0.12/gal. We used copper for the lines
from the tank to the heat exchanger on all the trucks and
tractors. We also flared the copper lines they fittings were very
similar to water line fittings but we used refrigeration grade
copper. I have used air line for both vapor and liquid propane
many times and not had a problem. In the old days i think the
propane hoses had a wire under the cover that made sure there was
conductivity between the tank and the heat exchanger. The tank
was bolted to the truck, and the heat exchanger was bolted to the
body, so I don't think the wire in the hose was really needed.
The use a wired hose for a filler hose from the big tank to the
fuel tank just to eliminate sparks from static...<br>
Cecil<br>
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<div class="moz-cite-prefix">On 10/7/2019 11:10 AM, Ray Trimble
wrote:<br>
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<div dir="ltr" data-setdir="false">I was using my 65 with a box
blade to level my yard when it stoped as in out of fuel. Began
to refuel and noticed a leak in the hose from the line that
connects the vapor outlet from the tank to the filter. I
repaired it by using a 3/8 air line hose and finished what I
was doing. I don't know what propane will do to this line over
time. Is there a standard to look for to replace this hose and
where can I find it. BTW before I got this tractor someone had
replaced the liquid line to the filter with copper tubing with
a flare fitting, is this a good fix.</div>
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<div dir="ltr" data-setdir="false">thanks</div>
<div dir="ltr" data-setdir="false">Ray<br>
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