.~.~.~ Rigidly interconnected or unitary cutoffs {2}
453
.~.~.~.~ Axially slidable only
DEFINITION
Classification: 222/453
(under subclass 451) Dispensers in which the cutoff unit is mounted for reciprocable motion substantially along the axis of the openings controlled, but having no other character of motion.
(1) Note. A single cutoff element alternately closing the inlet and outlet passages of the trap is here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
361+, for reciprocating trap chambers, particularly subclass 365, for those having plural concentric enlargements on a stem.
476, for plural cutoffs alternately seating at a single outlet, there being no structure defining a trap.
SEE OR SEARCH CLASS
137, Fluid Handling, 307+, for unitary reciprocating stop and waste valves in hydrants; subclasses 596+ for other stop and waste systems; subclasses 602+ for multiple inlet with single outlet systems; subclasses 861+ for systems with flow control means for plural passages; subclass 613 for systems comprising a
single flow path having plural serial valves; and subclass 627.5 for sequentially closing and opening alternately seating flow controllers.
