A door; especially, one of a pair of folding doors, or one of the leaves of such a door.
Swift through the valves the visionary fair
Repassed.
Heavily closed, . . . the valves of the barn doors.
A lid, plug, or cover, applied to an aperture so that by its movement, as by swinging, lifting and falling, sliding, turning, or the like, it will open or close the aperture to permit or prevent passage, as of a fluid.
One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or retard the flow in the opposite direction; as, the ileocolic, mitral, and semilunar valves. (Anat.)
One of the pieces into which a capsule naturally separates when it bursts. (Bot.)
One of the pieces or divisions of bivalve or multivalve shells. (Zool.)
a kind of balance valve usually consisting of a movable, open-ended, turban-shaped shell provided with two faces of nearly equal diameters, one above another, which rest upon two corresponding seats when the valve is closed.
that part of the surface of a valve which comes in contact with the valve seat.
Valve gear
the system of parts by which motion is given to the valve or valves for the distribution of steam in the cylinder. For an illustration of one form of valve gear, see Link motion.
Valve seat
The fixed surface on which a valve rests or against which it presses.
Valve stem
a rod attached to a valve, for moving it.
Valve yoke
a strap embracing a slide valve and connecting it to the valve stem.