DIFF Subgroup
F24F 11/74 for controlling air flow rate or air velocity
Introduced: January 2018
Full Title
Control or safety arrangements > Control systems characterised by their outputs; Constructional details thereof > for controlling the supply of treated air, e.g. its pressure > for controlling air flow rate or air velocity
Of 5 combined children, 4 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 2018.
Child Classifications
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- F24F 11/75 for maintaining constant air flow rate or air velocity since 2018 IPC+CPC Available in IPC and CPC
- F24F 11/755 for cyclical variation of air flow rate or air velocity since 2018 IPC+CPC Available in IPC and CPC
- F24F 11/76 by means responsive to temperature, e.g. bimetal springs since 2018 IPC+CPC Available in IPC and CPC