Special arrangements for improving the flow, e.g. special shape of passages or casings

Full Title

Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces > with screw-spindle > Special arrangements for improving the flow, e.g. special shape of passages or casings

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL

Subclass:

VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING

Child Classifications

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• F16K 1/08 in which the spindle is perpendicular to the general direction of flow
• F16K 1/1 in which the spindle is inclined to the general direction of flow