Definition of valves. Meaning of valves. Synonyms of valves
Here you will find one or more explanations in English for the word valves. Also in the bottom left of the page several parts of wikipedia pages related to the word valves and, of course, valves synonyms and on the right images related to the word valves.
Definition of valves
valvesSemilunar Sem`i*lu"nar, a.
Shaped like a half moon.
Semilunar bone (Anat.), a bone of the carpus; the lunar.
See Lunar, n.
Semilunar, or Sigmoid, valves (Anat.), the valves at
the beginning of the aorta and of the pulmonary artery
which prevent the blood from flowing back into the
ventricle. ValveValve Valve, n. [L. valva the leaf, fold, or valve of a door:
cf. F. valve.]
1. 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
Heavily closed, . . . the valves of the barn doors.
2. 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.
Note: A valve may act automatically so as to be opened by the
effort of a fluid to pass in one direction, and closed
by the effort to pass in the other direction, as a
clack valve; or it may be opened or closed by hand or
by mechanism, as a screw valve, or a slide valve.
3. (Anat.) 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.
(a) One of the pieces into which a capsule naturally
separates when it bursts.
(b) One of the two similar portions of the shell of a
(c) A small portion of certain anthers, which opens like a
trapdoor to allow the pollen to escape, as in the
5. (Zo["o]l.) One of the pieces or divisions of bivalve or
Air valve, Ball valve, Check valve, etc. See under
Air. Ball, Check, etc.
Double-beat valve, 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.
(a) A balance valve. See under Balance.
(b) A valve for permitting air, steam, water, etc., to
pass into or out of a chamber so as to establish or
maintain equal pressure within and without.
Valve chest (Mach.), a chamber in which a valve works;
especially (Steam Engine), the steam chest; -- called in
England valve box, and valve casing. See Steam
chest, under Steam.
Valve face (Mach.), that part of the surface of a valve
which comes in contact with the valve seat.
Valve gear, or Valve motion (Steam Engine), 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. (Mach.)
(a) The fixed surface on which a valve rests or against
which it presses.
(b) A part or piece on which such a surface is formed.
Valve stem (Mach.), a rod attached to a valve, for moving
Valve yoke (Mach.), a strap embracing a slide valve and
connecting it to the valve stem.
Meaning of valves from wikipedia
- tiny valve built
are also used in the military
sectors. In HVAC ductwork
near-atmospheric air flows, valves
- the valves
than they are to the atrioventricular valves
. The closure
of the semilunar valves causes
the second heart
sound. The aortic valve
- two valves
per cylinder: one for intake
of air (and often
fuel), and another
more valves increases valve
- Artificial heart valves
can be separated
into three broad
cl****es: mechanical heart valves
, bioprosthetic tissue valves
and engineered tissue valves
. The human...
Corporation, also known
Software, is an American video
game developer, publisher, and digital distribution company headquartered
- A solenoid valve
is an electromechanically-operated valve
. Solenoid valves differ
in the characteristics
of the electric current
they use, the strength...
- on keyboards. They are currently touring under
name, playing material
from the Valves
, the Cheetahs
and new material. Dave/Dee now lives
- shocks. Schrader valves
are also viewed
as more complex
(requiring two seals
over one), and heavier
than Presta valves
. Presta valve stems
are 6 mm in...
and Schrader valves
used on pneumatic tyres
of poppet valves
. The Presta valve
has no spring
on a pressure...
- other being
the pulmonary valve
. The heart
has four valves
; the other
two are the mitral
and the tricuspid valves
. The aortic valve normally
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