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PCE
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IPC Main Group
F23N 3/00

Regulating air supply or draught

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
COMBUSTION APPARATUS; COMBUSTION PROCESSES
Subclass:
REGULATING OR CONTROLLING COMBUSTION

4 direct subcodes

Child Classifications

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  • F23N 3/02 Regulating draught by direct pressure operation of single valves or dampers
  • F23N 3/04 by operation of single valves or dampers by temperature-sensitive elements
  • F23N 3/06 by conjoint operation of two or more valves or dampers
  • F23N 3/08 by power-assisted systems