of once-through type

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Control systems for steam boilers > for steam boilers of forced-flow type > of once-through type

CPC:

Control systems for steam boilers (for regulating feed-water supply F22D5/00; for controlling superheat temperature F22G5/00) > for steam boilers of forced-flow type > of once-through type

CPC subdivides this area 7x more granularly than IPC with 6 additional codes.

6 codes are CPC-only extensions.

Child Classifications

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F22B 35/101 CPC only CPC only
F22B 35/102 CPC only CPC only
F22B 35/104 CPC only CPC only
F22B 35/105 CPC only CPC only
F22B 35/107 CPC only CPC only
F22B 35/108 CPC only CPC only
F22B 35/12 operating at critical or supercritical pressure +1 CPC IPC+CPC Available in IPC and CPC