It would be unusual for it to fail, it's just a valve, made of brass parts.

Are you absolutely sure that it's not already closed?

On Wed, Aug 22, 2018 at 2:27 PM Neil N <musomuso@gmail.com> wrote:

> Thanks Jim.
>
> I'll double check that its not just an issue of residual fuel in the lines
> "fooling me" but I don't think it is. Can't see why a valve like that in
> such a crucial application, would fail in 10 years. But maybe that's not
> unusual.
>
> On Wed, Aug 22, 2018 at 2:20 PM, Jim. Felder <jim.felder@gmail.com> wrote:
>
> If it won't shut off, you need to replace it as soon as you can.
> >
>
>
>
> >
> > On Wed, Aug 22, 2018 at 3:58 PM Neil N <musomuso@gmail.com> wrote:
> >
> >>
> >>
> >
>
> > My propane tank is 10 years old. ....
> >>
> >
>
>
> >
> >> If the propane level is quite low, would that affect the main shut off
> >> valve operation?
> >>
> >>
>
> --
> Neil n
>
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>
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>
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>
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>