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Encyclopedia > Check valve
this siamese clappered inlet allows one or two inputs into a deluge gun
this siamese clappered inlet allows one or two inputs into a deluge gun

A check valve is a mechanical device, a valve, that normally allows fluid or gas to flow through it in only one direction. A double check valve is often used as a backflow prevention device to keep potentially contaminated water from siphoning back into municipal water supply lines. A clapper valve is a type of check valve used in or with firefighting, and has a hinged gate (often with a spring urging it shut) that will only remain open in the outflowing direction. Download high resolution version (822x438, 60 KB)A siamese clappered inlet. ... Download high resolution version (822x438, 60 KB)A siamese clappered inlet. ... The deluge gun, master stream or deck gun, is a high capacity nozzle used by firefighters. ... Mechanism is the following: In general, a mechanism is part of a chain of causes leading to some object or process. ... A Device can be taken to mean: an electrical device designed to carry power, but not use it. ... For the computer software/games company, see Valve Software A valve is a device that regulates the flow of fluids (either gases, fluidised solids, slurries or liquids) by opening, closing, or partially obstructing various passageways. ... A subset of the phases of matter, fluids include liquids, gases, plasmas and, to some extent, plastic solids. ... A gas is one of the four main phases of matter (after solid and liquid, and followed by plasma), that subsequently appear as a solid material is subjected to increasingly higher temperatures. ... The word flow has several different meanings: In fluid mechanics, the word flow is often used to mean a complete description of the motion of a fluid. ... A double check valve or double check assembly (DCA) is a backflow prevention device designed to protect water supplies from contamination. ... A backflow prevention device is used to protect water supplies from contamination. ... The Lachine Canal, in Montreal, is badly polluted Pollution is the release of harmful environmental contaminants, or the substances so released. ... A girl in a swimming pool full of water Water (from the Old English waeter; c. ... siphon principle A siphon (also spelled syphon) is a continuous tube that allows liquid to drain from a reservoir through an intermediate point that is higher than the reservoir, the up-slope flow being driven only by hydrostatic pressure without any need for pumping. ... A municipality or general-purpose district (compare with: special-purpose district) is an administrative local area generally composed of a clearly defined territory and commonly referring to a city, town, or village government. ... A girl in a swimming pool full of water Water (from the Old English waeter; c. ... Supply has a number of meanings: In economics, supply is the aggregate amount of any material good that can be called into being at a certain price point; it one half of the equation of supply and demand. ... Supply lines are roads, rail, and other transportation infrastructure needed to replenish the consumables that a military unit requires to function in the field. ... Firefighter with an axe A firefighter, sometimes still called a fireman though women have increasingly joined firefighting units, is a person who is trained and equipped to put out fires, rescue people and in some areas provide emergency medical services. ...


Some types of irrigation sprinklers and drip irrigation emitters have small check valves built into them to keep the lines from draining when the system is shut off. High-altitude aerial view of irrigation in the Heart of the Sahara Irrigation (in agriculture) is the replacement or supplementation of rainfall with water from another source in order to grow crops. ... Sprinkler A sprinkler is a device used for the distribution of water from plumbing pipes, by spraying it into the air. ... A dripper Drip irrigation is an irrigation method that applies water slowly to the roots of plants, by depositing the water either on the soil surface or directly to the root zone. ... An emitter is any device used to emit any signal, beacon, light, odor, liquid, fragrance, or the like. ...


Nikola Tesla invented a deceptively simple one-way valve for fluids in 1920 (U.S. patent # 1,329,559). Nikola Tesla (July 10, 1856 - c. ... 1920 (MCMXX) was a leap year starting on Thursday (link will take you to calendar) // Events January January 7 - Forces of Russian White admiral Kolchak surrender in Krasnoyarsk. ... Motto: E pluribus unum (1789 to present) (Latin: Out of Many, One) In God We Trust (1956 to present) Anthem: The Star-Spangled Banner Capital Washington, D.C. Largest city New York Official language(s) None at federal level; English de facto Government • President • Vice President Federal republic George W... A patent is a set of exclusive rights granted by a state to a person for a fixed period of time in exchange for the regulated, public disclosure of certain details of a device, method, process or composition of matter (substance) (known as an invention) which is new, inventive, and...


In electronics, a diode functions in the same manner. Electronics is the controlled manipulation of the flow of electrons; as defined by KAOS, A.K.A. TCBHM, in 1974. ... Types of diodes In electronics, a diode is a component that restricts the direction of movement of charge carriers. ...


See also

For the computer software/games company, see Valve Software A valve is a device that regulates the flow of fluids (either gases, fluidised solids, slurries or liquids) by opening, closing, or partially obstructing various passageways. ...

External links

  • A picture of a microscopic checkvalve, a scaled down version of Tesla's original fluidic diode.
  • US Patent 1,329,559, Tesla's original fluidic diode

  Results from FactBites:
 
Check-All Valve Home Page (309 words)
The Check-All Flange Insert valve is the ultimate check valve for flanged mounted applications.
The Flange Insert valves spring housing acts as a self centering device when inserted into the piping system.
The Sanitary Cartridge Valve is a 316 stainless steel check valve for use in new or existing sanitary systems.
Hydraulic Check Valve,Check Valve Manufacturers,Hydraulic Check Valves (390 words)
The non-return valves or check valves are used to block the reverse flow of oil or gas in a fluid power circuit.
The connection at the bottom is connected to a remotely operated pilot valve, As in the ordinary check valve, free flow is permitted in one direction when the line pressure lifts the plunger thus opening the valve.
When system pressure at the check valve inlet port is high enough to overcome the biasing spring force on the poppet, the poppet is pushed off its seat allowing oil to flow through the valve.
  More results at FactBites »

 
 

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