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Valves | Article about valves by The Free Dictionary

valve, device for controlling the flow of fluids (liquids and gases). Valves vary in construction and size depending upon their function. Some are classified according to their method of operation or design, e.g., butterfly, gate, globe, lift, needle, piston, and slide valves.

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46 CFR § 54.15-10 - Safety and relief valves (modifies UG ...

(a) All safety and relief valves for use on pressure vessels or piping systems shall be designed to meet the protection and service requirements for which they are intended and shall be set to relieve at a pressure which does not exceed the "maximum allowable working pressure" of the pressure vessel or piping system. Relief valves are not required to have huddling chambers for other than ...

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control valve Definition from PC Magazine Encyclopedia

Definition of: control valve control valve A device that modulates the flow of fluid in a conduit in response to a signal from a process measurement control system.

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Heart valves: MedlinePlus Medical Encyclopedia Image

Dec 01, 2018 · The valves of the heart open and close to control the flow of blood entering or leaving the heart. Heart valves: MedlinePlus Medical Encyclopedia Image Skip navigation

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Heart Encyclopedia | Cincinnati Children's

The Heart Encyclopedia also provides information about options available to diagnose and treat children's heart conditions and anomalies. Staff members at Cincinnati Children's Heart Institute believe information is a vital component to providing the highest level of care to patients, as well as support to their families, physicians and other ...

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Heart Valve Diseases - Health Encyclopedia - University of ...

Heart valves can develop both regurgitation and stenosis at the same time. Also, more than 1 heart valve can be affected at the same time. Some of the more common heart valve diseases are: Bicuspid aortic valve. With this birth defect, the aortic valve has only 2 leaflets instead of 3. It is more likely to narrow over time.

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Valve - Simple English Wikipedia, the free encyclopedia

A valve is a device that it is used to decrease or stop the flow of a fluid (like gases, liquids, fluidized solids, or slurries). It can be installed for example in a pipe or a vessel . There are many types of valves.

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Artificial heart and heart valve | Encyclopedia

Artificial heart and heart valve. Valves: Control and construction. History. Resources. An artificial heart is an synthetically made device that is intended to replace the heart muscle that pumps approximately 2,000 gal (7,571l) of blood through the body each day. In 2004, around 100,000 people in the United States were candidates for heart transplants, with about 4,000 in critical need of them.

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Control Valve Basics: Sizing and Selection

CONTROL VALVE BASICS – SIZING & SELECTION Introduction A control valve is a power operated device capable of modulating flow at varying degrees between minimal flow and full capacity in response to a signal from the controlling system. Control valves may be broadly classified by their function as "on-off" type or "flow regulating" type.

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Anatomy and Function of the Heart Valves - Health ...

Anatomy and Function of the Heart Valves What are heart valves? The heart has 4 chambers, 2 upper chambers (atria) and 2 lower chambers (ventricles). Blood passes through a valve before leaving each chamber of the heart. The valves prevent the backward flow of blood.

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Valve Types - GlobalSpec

The valve opens to allow flow and closes to stop flow. They are also known as on/off service or block valves. These valves are often used with a manual hand wheel, but can be automated with an actuator. Start/stop valves are used when flow needs to be diverted or for mixing applications when exact measurements are not required.

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Valve (disambiguation) - Simple English Wikipedia, the ...

A valve is a device that regulates the flow of fluids.. Valve may also refer to: . Valve Corporation, a computer software/games company responsible for the best-selling Half-Life games; Valve hall, a building which contains the valves of the static inverters of an HVDC plant; Mercury arc valve, a type of electrical rectifier which converts alternating current into direct current

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Lyons Encyclopedia Of Valves | Download eBook pdf, epub ...

lyons encyclopedia of valves Download lyons encyclopedia of valves or read online books in PDF, EPUB, Tuebl, and Mobi Format. Click Download or Read Online button to get lyons encyclopedia of valves book now. This site is like a library, Use search box in the widget to get ebook that you want.

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Valve - definition of valve by The Free Dictionary

Define valve. valve synonyms, valve pronunciation, valve translation, English dictionary definition of valve. valve top: closed check valve bottom: open check valve n. 1. a.

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Valve Encyclopedia: Ten Basic Types of Valves - Adamant ...

Jul 12, 2019 · Globe valves are also often heavier than other types of valves with the same flow rating. Pinch valves are inexpensive and are the simplest of any valve design. The pinch control valve consists of a sleeve molded of rubber or other synthetic material and a pinching mechanism. Pinch valves can be used to start, stop, or regulate flow.

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Valves - Visual Encyclopedia of Chemical Engineering

Ball valves are manufactured to handle a variety of fluids including corrosive chemicals, viscous liquids, gases and even acids. The picture below to the left shows a ball valve implemented into a pipe line. Ball valves such as the one pictured below to the right can be used in cryogenic temperatures ranging from .

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Valve (disambiguation) - Simple English Wikipedia, the ...

A valve is a device that regulates the flow of fluids.. Valve may also refer to: . Valve Corporation, a computer software/games company responsible for the best-selling Half-Life games; Valve hall, a building which contains the valves of the static inverters of an HVDC plant; Mercury arc valve, a type of electrical rectifier which converts alternating current into direct current

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Control valve | Grundfos

A control valve is used to regulate the amount of a circulating medium to a consuming unit. This can for example, be a mixing loop, a heat exchanger, or a fan coil. Control valves are normally supplied with a motor for opening or closing the valve.

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Valve | Encyclopedia

valve, device for controlling the flow of fluids (liquids and gases). Valves vary in construction and size depending upon their function. Some are classified according to their method of operation or design, e.g., butterfly, gate, globe, lift, needle, piston, and slide valves.

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Balancing valve | Grundfos

The inlet pressure for a dynamic balancing valve needs to be higher than a certain limit for it to operate properly. This means that the resistance at the most distant valve cannot be close to zero, as is the case with static valves. Balancing valves are available from numerous manufacturers.

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