Steam engine plants characterised by the use of specific types of engine (F01K3/02 takes precedence); Plants or engines characterised by their use of special steam systems, cycles or processes (reciprocating-piston engines using uniflow principle F01B17/04); Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating

Child Classifications

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• F01K 7/02 the engines being of multiple-expansion type (the engines being only of turbine type F01K7/16; the engines using steam of critical or overcritical pressure F01K7/32; the engines being of extraction or non-condensing type F01K7/34)
• F01K 7/06 the engines being of multiple-inlet-pressure type (F01K7/02 takes precedence; the engines being only of turbine type F01K7/16; the engines using steam of critical or over-critical pressure F01K7/32; the engines being of extraction or non-condensing type F01K7/34)
• F01K 7/10 characterised by the engine exhaust pressure (the engines being only of turbine type F01K7/16; the engines using steam of critical or over-critical pressure F01K7/32; the engines being of extraction or non-condensing type F01K7/34)
• F01K 7/16 the engines being only of turbine type (the engines using steam of critical or overcritical pressure F01K7/32; the engines being of extraction or non-condensing type F01K7/34)
• F01K 7/32 the engines using steam of critical or overcritical pressure
• F01K 7/34 the engines being of extraction or non-condensing type; Use of steam for feed-water heating (feed-water heaters in general F22D)