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PCE
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DIFF Subgroup
F22B 35/02

for steam boilers with natural convection circulation

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Control systems for steam boilers > for steam boilers with natural convection circulation

CPC:

Control systems for steam boilers (for regulating feed-water supply F22D5/00; for controlling superheat temperature F22G5/00) > for steam boilers with natural convection circulation

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

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  • F22B 35/04 during starting-up periods, i.e. during the periods between the lighting of the furnaces and the attainment of the normal operating temperature of the steam boilers IPC+CPC Available in IPC and CPC