(under the class definition) Subject matter in which the actuator includes means, other than one utilizing a fluid, for retarding the motion of valve actuation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
48+, for a valve having fluid retarder, and see the Search Notes thereto.
SEE OR SEARCH CLASS
137, Fluid Handling,
416+, for a quick acting float controlled valve, a period of delay usually preceding the quick action; subclass 435 for float arm operated means with a valve retarder; subclass 514 for a direct acting condition responsive valve having a retarder; subclasses 624.11+ for a programmer or nonfluid timer type actuator controlling a valve. 222, Dispensing,
477, for retarded or delayed action discharge controller in a dispenser.
