Description
Class F16K : VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
Subclass 1/26: 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 (diaphragm valves F16K 7/00) with valve members that, on opening of the valve, are initially lifted from the seat and next are turned around an axis parallel to the seat Shape or arrangement of the sealing