.~ Sequentially closing and opening alternately seating flow controllers
DEFINITION
Classification: 137/627.5
(under subclass 561) Devices wherein an actuator moves one valve from an open to a closed position after which the same actuator moves another valve from a closed to an open position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
627, for sequential alternately seating valves of the mixing or distributing type.
