is a device that regulates the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically pipe fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure. http://www.bolev-hydraulics.com/Xinwenzhongxin/
A door; especially, one of a pair of folding doors, or one of the leaves of such a door.
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.
valva = a fold, a leaf of a folding door.
Trays: Valve trays are cross flow trays with large perforations that are covered with flat plates. The cover plates are free to move vertically and thus permit the passage of ascending vapors.
Any device for controlling, restricting or interrupting the flow of a fluid. Most internal combustion engines use intake and exhaust valves to allow fuel/air mixture into the cylinders and to exhaust burnt gases.
A membranous flap composed of connective tissue and usually a layer of epithelium that directs the flow of fluid in one direction. Vascular (VAHS-kyoo-lawr) Pertaining to or containing blood vessels.
A device used to either open or close an opening to allow or prevent the flow of a liquid or gas from one place to another. Mostly, valves are spoken of about an engine as they are in an engine to open or close the combustion chamber. Intake valves allow or prevent intake of air and fuel, while exhaust valves allow exhaust gasses to leave the combution chamber. Note that all valves are closed during compression and combustion so that the combustion chamber is sealed. Current F1 engines have 4 valves per cylinder, 2 of which are intake valves and 2 for exhaust.
a piece of equipment that controls the flow of water or gas.
a device used to control the rate of flow in a line to open or shut off a line completely, or to serve as an automatic or semiautomatic safety device. Those used extensively include the check valve, gate valve, globe valve, needle valve, plug valve, and pressure relief valve.
A membranous fold in part of the body that prevents the back-flow of blood or other fluids. In the heart, there are four valves that help propel the blood flow forward.
Device to open and close an aperture to control the passage of gas or liquid.
A device to control flow. Valves used in pressurized systems include
There are many different types of valves, but they all basically do the same thing - control air flow; whether that be to admit atmosphere into the player system, or to channel or restrict suction within the mechanism itself. More information on valves can be found in the books listed on the resources page. (See Principles of Operation - click here)
There are four valves in the heart: the tricuspid and the mitral valve, which lie between the atria and ventricles and the pulmonic and aortic valves which lie between the ventricles and the blood vessels leaving the heart. The heart valves help to maintain one-way blood flow through the heart.
an equalizer device used in pools where the main drain line is plumbed into the skimmer. Used to adjust the amount of flow from the skimmer and main drain, usually adjusted before vacuuming.
A device that allows water to move in only one direction. A valve at the bottom of each cylinder holds the column of water in the rising main while the plunger is being pushed down after each up-stroke. A one-way valve in the plunger allows water to flow through the plunger while it is being pushed down.
Mechanism that controls the volume or direction of flow Can be closed, partially open, or fully open.
mechanical devices that allow brass players to change the tuning of their instruments
Structures that maintain the proper direction of blood flow. There are four valves in the heart: the tricuspid and the mitral valve, which lie between the atria and ventricles and the pulmonic and aortic valves which lie between the ventricles and the blood vessels leaving the heart
A device for closing the passageway in a pipe, duct, or conduit.
A membranous structure in an artery or vein that folds or closes to prevent the return flow of blood passing through it
Parts of an engine, which open at the proper time to let in air and fuel and to let out exhaust.
A circular-stemmed device used to control the flow of air/fuel mixture in and the flow of burned gasses out of the engine.
A mechanical device by which the flow of liquid may be started, stopped, or regulated by a movable part that opens, shuts, or partially obstructs one or more ports or passageways.
A device used to control fluid flow.
a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
control consisting of a mechanical device for controlling the flow of a fluid
a device connected to a pipe regulating the flow of water
a device for controlling flow through an opening
a device that allows a fluid to flow in only one direction in a defined path, thereby preventing back-flow of the fluid
a device that is controlled mechanically or electrically to meter or prevent the flow of a liquid or gas
a device that regulates the flow of fluids either gases, fluidised
a device used for the control of fluid flow
a device which allows only the unidirectional motion
a mechanical device that is used to control the volume of flow and pressure of fluids
a mechanical device to accomplish this task
a membranous fold in a hollow organ to allow fluid to flow in one direction only
an electronic device that has been
a structure, usually a flap or fold of tissue, found in the some tubes and tubular organs that restricts the flow of fluid in them in one direction only
a suction throttling device used on some GM and Ford air conditioner system
a tissue flap which keeps blood flowing in one direction only at a time
A moveable part that controls the flow of a liquid or gas through a pipe or other channel.
A mechanical device designed to open and close in order to regulate the flow of fluid or gas.
A membranous structure in a hollow organ or passage, as in an artery or vein, that retards or prevents the return flow of a bodily fluid.
A flap-like structure which by opening and closing allows a fluid to move in one direction only; valves help regulate blood flow.
a device that controls fluid flow direction, pressure or flow rate.
Latin valva = the segment of a folding-door.
a device that controls the flow of water.
A structure made up of membrane flaps that lies between two chambers of the heart, or between a chamber of the heart and a blood vessel. Open valves allow blood flow in only one direction. Closed valves normally prevent blood from passing through an opening.
Device which controls the flow of air. Usually operated by a pouch, pneumatic, key or other mechanism.
the device on a brass instrument that, indicated by the player's finger, determines the flow of air in the instrument and the amount of tubing that the air flows through
Device that opens and closes the combustion chamber of an internal-combustion engine to admit the fuel-air mixture or exhaust the gases.
The device used to let air in or out of a tyre.
small, delicate flaps of tissue spaced along a vein that open and close to allow blood to flow up the leg and return to the heart.
A small flap inside a vein which should only permit one-way flow. When valves malfunction, backward flow of blood (called reflux) is allowed, causing pressure elevation in the preceding area of the vein. This can lead to formation of varicose veins and telangectasias ( spider veins).
A device used to control the flow of fluid contained in a pipe line.
1. A round place with a shaft attached. The plate opens and closes the intake or exhaust ports to the combustion chamber to control flow through the engine. 2. A device that can be opened or closed to start or stop the flow of a liquid or gas.
a device for controlling flow of a fluid through an aperture; numerous designs are available for different application, for example, check valve, gate valve, globe valve, non-return valve, etc.
A device used to regulate the amount of hydraulic or air flow. In the closed position, there is zero flow, but when the valve is fully open, flow is unrestricted.
A device that regulates the flow of material in a pipe.
A device that controls fluid flow rate, direction or pressure.
A device that regulates water flow.
A structure that allows fluid flow in only one direction.
A device, which opens or closes to allow or stop gas or fluid flow.
fold in the lining of an organ that prevents fluid from flowing backward.
A device allowing gas to escape when inner pressure is too high, while preventing air from entering.
One of a variety of devices used to control the flow of liquid or gas in a system.
Component of 'gun hit by Hammer to open. Opening allows gas to flow in and fire 'gun.
A device used to control flow of fluids and regulate the flow of gases, liquids, or loose materials through structures, such as piping or hose lines, by opening and closing or by obstructing ports or passageways.
A device used for the control of fluid. It consists of a fluid retaining assembly, one or more parts between end openings, and a movable closure member which opens, restricts, or closes the port(s).
Flap-like structures within the heart that open and close to control the flow of blood through and out of the heart.
A device to stop, start or regulate the flow of liquid or gas through or from piping.
A device that regulates the flow of water. Also the rough-in part of a faucet that is concealed in the wall or undercounter.
1: a device that controls the flow or pressure of a gas. Valve functions can include shutoff, metering, backflow prevention, and pressure relief. [SEMI Chemicals/Gases, Vol. 1, 1990 (no longer in print)] 2: any component designed to provide positive shutoff of fluid media with the capability of being externally operated.
membrane in a passage that prevents the reflux of the contents flowing through it. Cardiac valves control the flow of blood through and from the heart.
A device that lets air in or out of a tire. Fitted with a valve cap to keep out dirt and moisture and a valve core to prevent air from escaping.
A device which control the pressure, direction of flow or rate of flow of a liquid or gas.
In hydrologic terms, a device fitted to a pipeline or orifice in which the closure member is either rotated or moved in some way as to control or stop flow.
A membraneous structure within a tube that prevents the return flow of the contents passing through it. The veins of the extremities have valves. image
A mechanical device installed in a water line to close off or regulate the flow of water.
A device that opens and closes to regulate the flow of water or other fluids.
A device which directs and controls the pressure and flow rate of a fluid.
Device placed in a shunt system to regulate the rate and direction of CSF flow.
A device that opens and closes to allow pressurized water to flow through pipes.
Any device in a pipe that will partially or totally obstruct the flow of water (as in a ball, gate or glove) or permit flow in only one direction (as in a check or foot valve) Bleeder Valve- Allows air to be vented from a system Multiport Valve- Allows for multidirectional control of the flow of water through a system. Push-pull Valve- Allows for dual directional control of the flow of water through a system.
A device fitted to a pipeline or orifice in which the closure member is either rotated or moved transversely or longitudinally in the waterway so as to control or stop the flow.
A structure in the heart that keeps blood flowing in a forward direction. Back to Previous Page
A device that controls the pressure, direction of flow or rate of flow of a liquid or gas.
Any device for halting or controlling the flow of something, such as a gas or liquid, through a pipe, out of a bottle neck, or other passage.
A device which controls fluid flow rate, direction, or pressure.
A mechanical means of altering water flow in a pipe. Water Mold: A type of bacteria found in dirty hot tub water. White, gray or pink in color. Very slimy and difficult to eliminate.
Numerous mechanical devices by which the flow of liquid, gas, or loose material in bulk may be started, stopped, or regulated by a movable part that opens, shuts, or partially obstructs one or more passageways.
A device in the shunt system to regulate the rate and direction of CSF flow.
A device that starts, stops or meters the flow of water in a faucet.
A mechanical device that controls the entry of fuel/air mixture into a combustion chamber, as well as the exit of spent combustion gases.
A mechanical device for controlling the flow of fluids and gases; types such as gate, ball, globe, needle, and plug valves are used.
A device used to control the flow of water. Isolation valves are used to shut off water for repairs. Control valves turn the water on and off to the individual circuits of sprinklers or drip emitters. Check valves allow the water to flow in only one direction. Master valves are located at the water source and turn on and off the water for the entire irrigation system when not in use.
A device that opens and closes to regulate the flow of liquids. Faucets include valves.
mechanical means for stopping and starting flow in a conduit; Many types used in firefighting, including gateâ€“, footâ€“, clapperâ€“ (backflow preventers), sprinkler-heads, etc.
A device that can be opened or closed to allow or prevent the flow of a liquid or gas from one place to another. Most internal combustion engines use intake and exhaust valves to allow fuel/air mixture into the cylinders and to exhaust burnt gases. Some engines have four valves per cylinder, which increases total valve area for increased efficiency and performance.
Controls the flow of Blood into and out of the Heart
device that regulates flow of liquid or gas.
A device that regulates the flow of fluid.
Mechanical device with a passageway that controls the flow of a liquid or gas. Movable parts that control the flow of a liquid or gas through a pipe or out of an enclosed space by opening or closing the passage.
A device used for controlling or regulating the pressure or flow of a liquid or gas.