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RE: Back Pressure for Drum Warm-up

#7773

Richard Perk
Participant

We use Fischer Valves. We’ve closed them fully at times, but generally we may close them to 40-50% in order to get adequate preheat within 45-60mins. By adequate I mean 400*F+ skin temps./minimum OVHD temp. drop after switch. If you are to start doing this on a routine basis I would suggest thourough and routine drum seem inspection.

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