with water tubes arranged in the boiler furnaces, fire tubes or flue ways

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Feed-water heaters, e.g. preheaters > with water tubes arranged in the boiler furnaces, fire tubes or flue ways

CPC:

Feed-water heaters, i.e. economisers or like preheaters > with water tubes arranged in the boiler furnaces, fire tubes or flue ways

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

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F22D 1/04 the tubes having plain outer surfaces, e.g. in vertical arrangement IPC+CPC Available in IPC and CPC
F22D 1/08 the tubes having fins, ribs, gills, corrugations, or the like on their outer surfaces, e.g. in vertical arrangement IPC+CPC Available in IPC and CPC
F22D 1/12 Control devices, e.g. for regulating steam temperature IPC+CPC Available in IPC and CPC
F22D 1/14 Safety or venting devices IPC+CPC Available in IPC and CPC