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PCE
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DIFF Main Group
F23L 11/00

Arrangements of valves or dampers after the fire

Introduced: September 1968

Of 2 combined children, 1 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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  • F23L 11/005 CPC only CPC only
  • F23L 11/02 for reducing draught by admission of air to flues IPC+CPC Available in IPC and CPC