rotary valve
type of valve in which the rotation of a passage or passages in a transverse plug regulates the flow of liquid or gas through the attached pipes
en-GB/ˈɹəʊtəɹɪ ˈvælv/
en-US/ˈɹoʊtɚi ˈvælv/
type of valve in which the rotation of a passage or passages in a transverse plug regulates the flow of liquid or gas through the attached pipes