(under the class definition) Subject matter wherein sealing means comprising a diaphragm or flexible sheet material member is interposed between the actuator and the valve to close the flow passage, the sealing means yielding with the movement of the actuator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
128, for valve devices having a detachable actuator and means for preventing leakage when the actuator is detached.
SEE OR SEARCH CLASS
74, Machine Element or Mechanism,
18+, for flexible seals pierced by a rod, which seal is fixed to its support and to the rod.
137, Fluid Handling,
536, for line condition responsive valves having spring means for biasing the valve to closed position and means for protecting the spring from the pressure fluid.
277, Seal for a Joint or Juncture, for a generic sealing means or process,
634+, for a static contact seal for other than an internal combustion engine, or a pipe, conduit, or cable that is a flexible sleeve, boot, or diaphragm.
