Kelly Anderson Wrote:
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> Double seated throttle valves always leak to a
> certain extent. Accordingly, the cylinder block
> always stays warm. Freezing the smaller plumbing
> to the injectors, etc. is the bigger issue. We
> had the steam line to the boiler pressure gauge
> freeze once, inside the cab, during operation!
I'm not surprised Kelly. With no flow, you first would
have a change of state from gas to liquid (condensate)
and from there it certainly could freeze. I worked with
steam in a large refinery and that example you cited is
what we termed a dead leg..