(under subclass 569) Apparatus wherein the flow controlling means is responsive to the mere flow of fluid at substantially any pressure; that is, there is not required that a particular relatively elevated pressure be obtained before the controller permits flow downstream therefrom, but rather that mere inertia or weight of the part be overcome.
SEE OR SEARCH THIS CLASS, SUBCLASS:
412, for combining of plural streams involving fluid pressure operated valving means.
452+, for fluid pressure responsive discharge modifiers associated with terminal outlet means formed by parts mounted for relative movement.
464, for whirlers combined with fluid pressure responsive modifying means.
533, for fluid pressure responsive discharge modifiers or flow regulators.
SEE OR SEARCH CLASS
137, Fluid Handling,
511+, for a fluid handling system including a valve of the direct response type.
