for steam boilers of forced-flow type

Full Title

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

Child Classifications

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• F22B 35/08 of forced-circulation type
• F22B 35/10 of once-through type
• F22B 35/14 during the 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
• F22B 35/16 responsive to the percentage of steam in the mixture of steam and water