the tubes having plain outer surfaces, e.g. in vertical arrangement

Full Title

Feed-water heaters, e.g. preheaters > with water tubes arranged in the boiler furnaces, fire tubes or flue ways > the tubes having plain outer surfaces, e.g. in vertical arrangement

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

STEAM GENERATION

Subclass:

PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS

Child Classifications

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• F22D 1/06 in horizontal arrangement