with pivoted discs or flaps

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 ( ; diaphragm valves F16K7/00) > with pivoted closure-members > with pivoted discs or flaps

Child Classifications

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• F16K 1/20 with axis of rotation arranged externally of valve member
• F16K 1/22 with axis of rotation crossing the valve member, e.g. butterfly valves