[Shop-talk] question on LP tanks

[John Innis]

Was this a brand new tank, or did you buy a pre-filled tank from an
exchange place?

Brand new tanks come empty, an need to be purged then filled.

If it was a prefilled tank there is an automatic shutoff that is supposed
to keep it from leaking when the hose is not connected.  It is possible
that feature is not working as intended, especially on an older tank.

Another feature that might be getting you is the automatic shutoff that
comes into play if the flow rate is too high.  This is sometimes an issue
if you open the tank valve too quickly, or your appliance is drawing too
much gas.  This feature can be reset by closing the tank valve all the way,
then opening it very slowly to prevent the safety from tripping.  I have
this problem on a regular basis with my LP shop heater.

On Sat, Mar 2, 2019 at 11:27 AM Tim . via Shop-talk <
shop-talk at autox.team.net> wrote:

> I bought my first ever LP tank last month. (I use charcoal when I grill
> year 'around here in WI.) I bought the tank to use with a newly purchased
> torpedo heater.
>
> When I hooked up the tank to the heater hose, the tank's valve turned out
> to be open about half way. The little plastic cover was on the valve so it
> appeared newly filled. I was not able to get the heater to fire up the
> other day when I tried for the first time. Since the temperature was in the
> low 30s, I just did the oil change without using a heater in my shop. I am
> wondering if the tank was not full or not....
>
> Do these tanks have a some sort of safety thing on the valve to keep them
> from emptying if the valve is not closed? Or was the tank just left open so
> leaked empty?
>
> Thanks
> tim
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