| slovo | definícia |
ball valve
(encz) | ball valve,kulový kohout n: [tech.] Václav Kubíček |
Ball valve
(gcide) | Valve \Valve\, n. [L. valva the leaf, fold, or valve of a door:
cf. F. valve.]
[1913 Webster]
1. A door; especially, one of a pair of folding doors, or one
of the leaves of such a door.
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Swift through the valves the visionary fair
Repassed. --Pope.
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Heavily closed, . . . the valves of the barn doors.
--Longfellow.
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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.
[1913 Webster]
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.
[1913 Webster]
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.
[1913 Webster]
4. (Bot.)
(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
diatom.
(c) A small portion of certain anthers, which opens like a
trapdoor to allow the pollen to escape, as in the
barberry.
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5. (Zool.) One of the pieces or divisions of bivalve or
multivalve shells.
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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.
Equilibrium valve.
(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
it.
Valve yoke (Mach.), a strap embracing a slide valve and
connecting it to the valve stem.
[1913 Webster] |
Ball valve
(gcide) | Ball \Ball\ (b[add]l), n. [OE. bal, balle; akin to OHG. balla,
palla, G. ball, Icel. b["o]llr, ball; cf. F. balle. Cf. 1st
Bale, n., Pallmall.]
1. Any round or roundish body or mass; a sphere or globe; as,
a ball of twine; a ball of snow.
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2. A spherical body of any substance or size used to play
with, as by throwing, knocking, kicking, etc.
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3. A general name for games in which a ball is thrown,
kicked, or knocked. See Baseball, and Football.
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4. Any solid spherical, cylindrical, or conical projectile of
lead or iron, to be discharged from a firearm; as, a
cannon ball; a rifle ball; -- often used collectively; as,
powder and ball. Spherical balls for the smaller firearms
are commonly called bullets.
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5. (Pyrotechnics & Mil.) A flaming, roundish body shot into
the air; a case filled with combustibles intended to burst
and give light or set fire, or to produce smoke or stench;
as, a fire ball; a stink ball.
[1913 Webster]
6. (Print.) A leather-covered cushion, fastened to a handle
called a ballstock; -- formerly used by printers for
inking the form, but now superseded by the roller.
[1913 Webster]
7. A roundish protuberant portion of some part of the body;
as, the ball of the thumb; the ball of the foot.
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8. (Far.) A large pill, a form in which medicine is commonly
given to horses; a bolus. --White.
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9. The globe or earth. --Pope.
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Move round the dark terrestrial ball. --Addison.
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10. (Baseball) A pitched ball, not struck at by the batter,
which fails to pass over the home plate at a height not
greater than the batter's shoulder nor less than his knee
(i.e. it is outside the strike zone). If the pitcher
pitches four balls before three strikes are called, the
batter advances to first base, and the action of pitching
four balls is called a walk.
[Webster 1913 Suppl. +PJC]
10. a testicle; usually used in the plural. [vulgar]
[PJC]
11. pl. courage; nerve. [vulgar]
[PJC]
Ball and socket joint, a joint in which a ball moves within
a socket, so as to admit of motion in every direction
within certain limits.
Ball bearings, a mechanical device for lessening the
friction of axle bearings by means of small loose metal
balls.
Ball cartridge, a cartridge containing a ball, as
distinguished from a blank cartridge, containing only
powder.
Ball cock, a faucet or valve which is opened or closed by
the fall or rise of a ball floating in water at the end of
a lever.
Ball gudgeon, a pivot of a spherical form, which permits
lateral deflection of the arbor or shaft, while retaining
the pivot in its socket. --Knight.
Ball lever, the lever used in a ball cock.
Ball of the eye, the eye itself, as distinguished from its
lids and socket; -- formerly, the pupil of the eye.
Ball valve (Mach.), a contrivance by which a ball, placed
in a circular cup with a hole in its bottom, operates as a
valve.
Ball vein (Mining), a sort of iron ore, found in loose
masses of a globular form, containing sparkling particles.
Three balls, or Three golden balls, a pawnbroker's sign
or shop.
on the ball alert; competent and knowledgeable.
to carry the ball to carry on the task; to assume the
responsibility.
to drop the ball to fail to perform as expected; to fail to
live up to a responsibility.
[1913 Webster]
Syn: See Globe.
[1913 Webster] |
ball valve
(wn) | ball valve
n 1: any valve that checks flow by the seating of a ball |
| | podobné slovo | definícia |
ball valve
(encz) | ball valve,kulový kohout n: [tech.] Václav Kubíček |
ball valve
(wn) | ball valve
n 1: any valve that checks flow by the seating of a ball |
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