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Encyclopedia results for Check valve

  1. Check valve

    unreferenced date November 2008 Image Inconel Tilting disc check valve The Alloy Valve Stockist.JPG 130px right thumb Tilting disc inconel check valve Image Check Valve.svg thumb right 140px Check valve symbol on Piping and instrumentation diagram P&IDs. The arrow shows the flow direction. A check valve ... any valve handle or stem. The bodies external shells of most check valves are made of plastic or metal ... at which the valve will operate. Typically the check valve is designed for and can therefore be specified for a specific cracking pressure. Heart valve s are essentially inlet and outlet check valves ... multiple image width 100 footer A ball check valve in the open position to allow forward flow ... of longer breaks in system use. A ball check valve is a check valve in which the closing member ..., such as a Poppet valve poppet energized by a spring. Ball check valves should not be confused with ball ... or direct flow. A diaphragm check valve uses a flexing rubber diaphragm positioned to create a normally ... side by a certain amount, known as the pressure differential, for the check valve to open allowing ... check valve or tilting disc check valve is check valve in which the disc, the movable part to block ... valves are often swing check valves. The flapper valve in a Flush toilet Tank style with flapper flush ... pressure. anchor stop check valve A stop check valve is a check valve with override control to stop ... or insufficient forward pressure normal check valve behavior , it can also be deliberately shut by an external mechanism, thereby preventing any flow regardless of forward pressure. A lift check valve is a check valve in which the disc, sometimes called a lift , can be lifted up off its seat by higher ..., shutting the valve to stop reverse flow. A duckbill valve is a check valve in which flow proceeds through ... off flow. Multiple check valves can be connected in series. For example, a double check valve is often .... Check valves are also often used when multiple gases are mixed into one gas stream. A check valve ...   more details



  1. Double check valve

    Unreferenced stub auto yes date December 2009 Image Dcvnormal.gif right Double check valve during normal operation Image Dcvreverse.gif right Double check valve during reverse flow A double check valve or double check assembly DCA is a backflow prevention device designed to protect water supplies from backflow plumbing contamination . It is also a valve used in air brake systems on heavy trucks. Usage in Water Supply In the case of usage in water supply, it consists of two check valve s assembled in series. This employs two operating principles firstly one check valve will still act, even if the other is jammed wide open. Secondly the closure of one valve reduces the pressure differential across the other, allowing a more reliable seal and avoiding even minor leakage. Small valves may be so compact as to be barely noticeable, particularly when they are integrated into the bodies of existing taps faucets . Larger check valves may be installed with ball valve s at the ends, for isolation and testing. Often, test cocks very small ball valves are in place to attach test equipment for evaluating whether the double check assembly is still functional. The double check valve assembly is suitable for prevention of back pressure and back siphonage, but is not suitable for high hazard applications. It is commonly used on lawn irrigation , fire sprinkler and combi boiler systems. If the hazard is higher, even a relatively low hazard such as using antifreeze in the fire sprinkler system, then a more reliable check valve such as a Reduced pressure zone device may be mandated. See also Air gap plumbing Air gap Hydrostatic loop Pressure vacuum breaker Chemigation valve Reduced Pressure Principle BFP Atmospheric vacuum breaker Reduced pressure zone device Air brake road vehicle DEFAULTSORT Double Check Valve Category Plumbing valves Category Irrigation civil engineering stub de Zwillingsr ckschlagventil ...   more details



  1. Check

    Wiktionarypar check Check may refer to A small crack in the glass, also known as a check, in the glass container industry Cheque Check in U.S. English , an order for transfer of money Check box , a type of widget in computing Check fabric , a woven fabric having a repeating pattern of colors Check unit testing framework , a unit testing framework for C programs Penetration testing Standards .26 certification CHECK Scheme , a penetration testing certification run by CESG Checking ice hockey , the act of physically keeping an opponent restrained Rain check, an English language idioms derived from baseball R idiom from baseball meaning an agreement to supply a customer in future an item that a merchant has run out of Tartan , a checked pattern in fabric and weaving Tick checkmark , a mark used for verification or notation Games betting poker Check Check , declining to bet in a game of poker Check chess , a threat to capture the king or general Cross check , in chess, a check played in reply to a check Poker chip , less commonly referred to as a check Musics The Checks band , a New Zealand band Check , a song by Canadian rock band Max Webster from the album Universal Juveniles See also Checkmate disambiguation Chek disambiguation disambig de Check ko ja simple Check sv Check ...   more details



  1. Valve

    fluids. Ceramic disc can also provide Class IV seat leakage Check valve or non return valve, allows ... or a stopcock Demand valve on a diving regulator Double beat valve Double check valve Duckbill valve ... tubes to treat a pneumothorax Foot valve a check valve on the foot of a suction line to prevent backflow ... override automatic control, such as a stop check valve . An actuator is a mechanism or device to automatically ... because they automatically control themselves from inside for example, check valve s and relief valve s may have neither. Disc Image Nozzle check valve disc The Alloy Valve Stockist.JPG 150px right ... as in a butterfly valve , or rotate on a hinge or trunnion as in a check valve . A ball is a round ..., a ball check valve uses the ball to block reverse flow, but is not a rotor because operating the valve ... not need a stem as in most check valve s. Valves whose disc is between the seat and the stem and where ... or valves using rotors. Image Check valve springs in inconel The Alloy Valve Stockist .JPG 150px thumb ... Check valves.JPG Hastelloy check valve s Image Duplex valve A182 F51.JPG Duplex ball valve Image Inconel gate valve The Alloy Valve Stockist.JPG Inconel gate valve Image Wafer check valve The Alloy Valve Stockist.JPG Stainless steel wafer check valve Image Inconel Tilting disc check valve The Alloy Valve Stockist.JPG Inconel check valve Image Ball valve The Alloy Valve Stockist.JPG Stainless steel ... Inside tilting disc check valve The Alloy Valve Stockist.jpg Inside view of a tilting disc inconel check valve Image Duplex ball valves The Alloy Valve Stockist.JPG Duplex ball valve s Image Cryogenic ... s Image Flanged Nozzle check valve The Alloy Valve Stockist.JPG Flanged nozzle inconel check valve or axial check valve Image Inside wafer check valve The Alloy Valve Stockist.JPG Inside hastelloy check valve , wafer configuration Image Large swing check valve The Alloy Valve Stockist.jpg Large carbon steel swing check valve Image Nozzle check valve disc The Alloy Valve Stockist.jpg Disc for an alloy ...   more details



  1. Check-in

    the album by The Chalets Check In Image Leeds Bradford International Airport terminal, inside.jpg thumb 180px right Check in Hall at Leeds Bradford International Airport Image Front desk hotel.JPG right thumb 180px Kempinski Hotel Vier Jahreszeiten check in Hotel Vier Jahreszeiten Kempinski http www.kempinski vierjahreszeiten.de de hotel index.htm?folding 1 Check in is the process of announcing ... Airport check in Check in desks are found in the majority of commercial airport s. Their main function ... that usually feeds into the main baggage handling system. Each airline is assigned a check in desk ... check in, where passengers give their bags to an airline representative right before entering the terminal and then proceed directly to security. Automated check in There is an increasing trend towards more automated check in processes, with many passengers now able to either check in online before ... check in kiosks at the airport, avoiding queues for the main, staffed, check in desks. Check in scale The airline check in s main function is to accept luggage that is to go in the aircraft s cargo hold ... ensures an optimum flow of passengers at check in counters. The weighing scale bases use high performance .... The check in scale displays can be mounted on top of the counter or integrated in de check in counter. Most of the check in scale displays are equipped with a totalisation function. Totalisation enables ... s, check in is normally required in order to obtain a room key lock key and provide a credit .... The hotel s check in time indicates the time from which the hotel starts charging for the day. If anybody wants to occupy the hotel room before the hotel s check in time, the hotel charges for one additional day and considers it as previous day stay as compared to occupying the hotel room after the check ... min by the customers, without any additional charge, if one wishes to take the room before the check ... at about hotel s check in time and leave or hand over the hotel room at about the hotel s check ...   more details



  1. Check In

    About an album the arrival in an airport or a hotel Check in Infobox album See Wikipedia WikiProject Albums Name Check In Type Album Artist The Chalets Cover Chalets check in cover.png Released September 2, 2005 Recorded Genre Length 39 15 Label Setanta Records Producer Richard Rainey, Gareth Mannix Reviews Review Christgau B album 13645 Last album This album Check In br 2005 Next album Unreferenced date September 2009 Check In is an album by The Chalets , released in 2005. Track listing Theme From Chalets 2 55 No Style 3 30 Red High Heels 3 12 Gogo Don t Go 3 27 Arrivals 0 41 Feel the Machine 3 13 Two Chord Song 1 55 Fight Your Kids 3 27 Nightrocker 3 18 Sexy Mistake 2 55 Departures 0 42 Checkout 2 41 Love Punch 2 20 Beach Blanket 4 59 Category 2005 albums 2000s indie rock album stub ...   more details



  1. Check on It

    good article Infobox Single Name Check On It Cover Checkonit.jpg Released December 13, 2005 Artist Beyonc ... Check on It br 2005 Next single D j Vu Beyonc Knowles song D j Vu br 2006 Extra chronology Artist Slim Thug singles Type singles Last single Luxurious br 2005 This single Check on It br 2005 Next single Wamp Wamp What It Do br 2006 Check on It is a song performed by American Contemporary ... States on December 13, 2005. The song s development was motivated by the phrase Check on It which Knowles and her management jokingly used before they decided to turn the idea into a song. Check ... her lyrics. Check on It was not originally lined up for an official release as a single from ..., Check on It debuted on the on the US Billboard Hot 100 Billboard Hot 100 in November 2005, that is, before ... . Check on It won the MTV Video Music Award for Best R&B Video Best R&B Video at the 2006 MTV Video ... and release Image SlimThug.jpg thumb right Slim Thug at the KDHT studio in 2005. Check on It was composed ... Geoffrey Rice, and Matt Serrecchio. ref name allmusic cw url http www.allmusic.com album check on it single r813374 title Check on It & 91 Single& 93 publisher Allmusic . Rovi Corporation accessdate December 13, 2010 ref Knowles said that the song s title, Check on It , was a phrase jokingly used ... cite video people Hype Williams Williams, Hype Director date 2005 title The making of Check on It medium ... Global Media accessdate 2008 09 26 ref Check on It was not originally intended for release as a single ... rotation, Check on It debuted on the US Billboard Hot 100 Billboard Hot 100 in November 2005 .... ref name allmusic Check on It was first released through Music download digital download in the United States on December 13, 2005. ref cite news url http music.aol.com song check on it album version 7337974 title Check on It Album Version Beyonc work AOL publisher AOL Inc. accessdate 2008 ... the United Kingdom ref name uk1 and the United States. ref name us1 Check on It was also released ...   more details



  1. Hydrogen valve

    A hydrogen valve is a special type of valve that is used for hydrogen at very low temperatures or high pressures in hydrogen storage or for example hydrogen vehicles . Image Inconel Tilting disc check valve The Alloy Valve Stockist.JPG 180px right thumb Inconel tilting disc check valve for hydrogen service. Types High pressure ball valve s up to 6000 psig 413 Bar unit bar at 250 degrees Fahrenheit F 121 degrees Celsius C and flow coefficients from 4.0 to 13.8. ref http findarticles.com p articles mi m0EIN is 2004 August 23 ai n6165031 Hydrogen ball valve ref Material Valve s used in industrial hydrogen and oxygen applications, such as petrochemical processes, are often made of inconel . See also Diaphragm valve Gate valve Hydrogen tank Commons category Inconel valves Inconel valves position left References reference External links http www.ika.rwth aachen.de r2h index.php Hydrogen Valve Hydrogen valve DEFAULTSORT Hydrogen Valve Category Valves Category Hydrogen technologies ar ...   more details



  1. Slide check

    Unreferenced stub auto yes date December 2009 Orphan date December 2009 A slide check is a valve used in pressure pressurized systems that lets air out ahead of it the destination while keeping pressure intact from behind it the source . Slide checks are commonly used in paintball , mostly in remote propulsion setups, to cut air off from the gun while keeping the remote pressurized. Slide checks are also useful when working with high pressure systems, such as hydro testing or audible air or CO2 leaks as you can rapidly apply pressure and release it without the frighting pow or projection of hoses with QD male quick disconnect fittings causing a dangerous hose whip motion. See also Paintball equipment Paintball Equipment DEFAULTSORT Slide Check Category Valves Tech stub ...   more details



  1. Buddy check

    The buddy check is a Procedure term procedure carried out by Scuba diving SCUBA divers using the buddy ... title A pre dive check An evaluation of a safety procedure in recreational diving Part 1 journal South ... that one has to help or rescue the other. Mnemonics There are several mnemonic s for the buddy check BWRAF There are several forms of buddy check, but almost all cover five definite principles. The PADI ... PADI location United States isbn 1878663011 ref B BCD Check function of BCD. Operate inflator and deflator to ensure that BCD can accept and release air. Test oral inflator. Operate all dumps to check ... flat. W Weights If a weight belt is worn, check that the belt is secure, and the strap arranged ... to operate them in an emergency R Releases Locate and check that all of your buddy s releases are properly ... to touch each clip as you check it and even count each one out loud as you do so. Remember to check ... Open air valve on tank. Most divers then close the tank a quarter turn for an added element of safety ... flow when purged. Check hoses for damage. Ensure that the secondary regulator the octopus is attached ... easy access for a buddy in the event of an emergency. F Final Check Conduct a final check of the diver ... etc. needed for the dive. Check that these are secured to the diver, or else placed in a spot where .... BAR BAR is another acronym for the parts of a buddy check. It is used by the British Sub Aqua Club ... source has its pillar valve open, has sufficient gas, is functioning and tastes good. If the indicating ... pillar valve is only partially open and will not provide enough gas at the higher ambient pressures ... breathe from the loop for 2 or 3 minutes before entering the water, to check that the soda lime of the carbon ... special risks or concerns that must be addressed? B Buoyancy check negative and positive buoyancy ... are in case you have to drop them. A Air Both buddies check each other s first and second stages, confirm the locations of their octopuses, and proof check by breathing from each other s equipment ...   more details



  1. Chemigation valve

    Unreferenced stub auto yes date December 2009 A chemigation valve is an apparatus designed to protect water supplies from agricultural chemical s used during chemigation, the application of chemicals such as fertilizer s and pesticide s through irrigation water. Most chemigation valves consist of a spring loaded check valve , a low pressure drain, an air and vacuum relief valve, and an injection port for introducing the chemicals downstream of the check valve. Many chemigation valves also have a 4  inch inspection port so that a person can reach inside and feel if the check valve is still functional. Some governments require the use of two chemigation valves installed in series if hazardous chemicals are to be injected. Texas State law Chapter 344.73 in Subchapter D 1. b An irrigation system which adds any chemical is considered to be a high health hazard . Such an irrigation system must not be connected to any potable water supply except through a reduced pressure principle backflow prevention assembly. See also Air gap plumbing Air gap Hydrostatic loop Pressure vacuum breaker Double check valve Reduced Pressure Principle BFP Atmospheric vacuum breaker DEFAULTSORT Chemigation Valve Category Plumbing valves Category Irrigation Agri stub ...   more details



  1. Check and Double Check

    Infobox Film name Check and Double Check image CheckDoubleCheckPoster.jpg image size caption Theatrical release poster director Melville W. Brown producer William LeBaron writer Bert Kalmar br J. Walter Ruben br Harry Ruby narrator starring Charles Correll br Freeman Gosden music cinematography William Marshall editing Claude Berkeley distributor RKO Pictures RKO Radio Pictures released October 23, 1930 runtime 77 mins. country United States language English language English Check and Double Check is a 1930 comedy film made and released by RKO Pictures RKO based on the then popular Amos n Andy old time radio radio show. The title was derived from a catch phrase associated with the show. The making of the picture posed several problems. Perhaps foremost was the fact that the characters of the program were portrayed as African American blacks but were in fact entirely voiced by whites . This had posed no problem on the radio, but obviously would not be suitable for a movie where the actor s could be seen as well as heard. Rather than hire black actors for the roles and instruct them to imitate to the maximum extent possible the very stereotype stereotypical voices used by the radio performers, program creators Freeman Gosden and Charles Correll performed the roles themselves in blackface . Another problem was the attempt to base a full length picture on a 15 minute long radio program. In order to do this, the movie s producers unwisely decided to flesh out the story with a love triangle involving white characters, essentially making Amos and Andy minor characters in what was marketed ... Check and Double Check The Rasslin Match and The Lion Tamer . However, no sequel was ever produced ... Arthur See also List of films in the public domain External links imdb title id 0020758 title Check and Double Check Internet Archive film id ClassicCinemaOnline CheckAndDoubleCheck rotten tomatoes id check and double check Amg movie 9049 Check and Double Check Category 1930 films Category RKO films ...   more details



  1. Cross check

    disambig Cross check may refer to Cross checking hockey or Cross checking in hockey cross check a chess chess tactic tactic of blocking a check chess check with a check to force the exchange of chess piece pieces ja ...   more details



  1. Leaf valve

    Unreferenced stub auto yes date December 2009 Orphan date December 2009 A leaf valve is a one way valve check valve consisting of a diagonal obstruction with an opening covered by a hinged flap. p Patents exist in the United states which specify the mechanical use use of leaf valves to control various types of fluids. p United States Patent 4930535 is a folding leaf valve which is described as a valve that, folds upon itself to provide positive sealing of a pressurized chamber under a variety of pressure conditions. In particular, the valve stem folds to effectively close the lumen and provide a positive seal even at low differential pressure. p United States Patent 4795340 is a single leaf valve for a gas fired boiler. It has a seat for a valve leaf , and a single valve leaf for the two constituents, this single valve leaf being flexible and deformable.... Application, in particular, to gas fired boilers of the pulsed combustion type. p United States Patent 5441133 This hydraulic damper has a leaf valve stopper, the patented invention relates to a hydraulic damper. A leaf valve and a main valve are provided at an inner seat and an outer seat having different heights to each other arranged at outlet ports of a piston in such a way as they may be opened or closed... an attenuation force can be stabilized.. and the leaf valve is supported by the tapered or curved surface of the stopper when flexed, resulting in that no cracks are generated. p These patents were found by searching http www.freepatentsonline.com p DEFAULTSORT Leaf Valve Category Valves Mech engineering stub ...   more details



  1. Ball valve

    . A ball check valves is a type of check valve with a ball without a hole for a disc, and is not covered ... valve ballcock Image Seccion valvula de bola.jpg 250px right thumb Cut away view of a ball valve mechanism File Ball.PNG 150px thumb right Cutaway view of a simple manual ball valve . 1   Body 2   Seat 3   Disc  ball 4   Handle  Lever 5   Stem A ball valve is a valve with a spherical disc, the part of the valve which controls the flow through it. The sphere has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur. When the valve is closed, the hole is perpendicular to the ends of the valve, and flow is blocked. The handle or lever will be inline with the port position letting you see the valve s position. The ball valve, along with the butterfly valve and plug valve , are part of the family of quarter ... valve s and gate valve s for this purpose . They do not offer the fine control that may be necessary ... UK market leader. Citation needed date November 2009 Types of ball valve There are five general body ... is based on how the pieces of the valve especially the casing that contains the ball itself are manufactured and assembled. The valve operation is the same in each case. Image Duplex valve A182 F51.JPG 200px right thumb Duplex ball valve In addition, there are different styles related to the bore of the ball mechanism itself A full port or more commonly known full bore ball valve has an over ... in lower friction loss. Flow is unrestricted but the valve is larger and more expensive so ... port or more commonly known reduced bore ball valves, flow through the valve is one pipe size smaller than the valve s pipe size resulting in flow area being smaller than pipe. As the flow discharge ... increases with reduced area of flow. A V port ball valve has either a v shaped ball or a v ... to linear flow characteristic. When the valve is in the closed position and opening is commenced ...   more details



  1. Relay valve

    is merged via a two way check valve. The two way check valve is a pneumatic device that has ... pressure is allowed to pass through to the check valve s output, which then passes through the tractor protection valve, and then travels onward towards the trailer s air tank and spring brake valve via the red trailer supply line a.k.a., the emergency line this releases the trailer s emergency brakes a.k.a. spring brakes . The tractor protection valve is a device that prevents air ... two way check valves connected in series to give three inputs of the foot valve and trailer hand valve ... the merged outputs of the foot valve i.e., via a single two way check valve are directed towards ... check valve. The delivery port output of the parking control valve connects to the control port of this relay ...Orphan date February 2009 Unreferenced date December 2009 A relay valve is an air operated valve. It is used ... the front of the vehicle, where the front service brakes, foot valve, parking control valve, and trailer supply valve if applicable are located. Without relay valves, it would take too long for sufficient air to travel from the brake pedal valve to the rear of the truck or trailer in order to apply ... as brake lag. To correct this condition on a long wheel base vehicle, a relay valve is installed ... valve for remote service brake application. Trailers In trailers, this remote air supply is in the form ... supply valve on the dashboard. In a dual circuit air brake system, this tank actually receives ... of an intersection. Service brake relay valve With a service brake relay valve installed, the hose that connects to the primary delivery port output of the foot valve becomes a control line i.e., The air from the foot valve dead ends at the relay valve s control port. . Only low volume air signals are required to travel back and forth between the foot valve s delivery port and the relay valve s control port therefore, the air volume supplied by the delivery port is now only a tiny ...   more details



  1. Reality Check

    wiktionary reality check Reality Check may refer to Reality Check TV series Reality Check TV series , a 1995 syndicated television series Reality Check Podcast Reality Check Podcast , a skeptical podcast produced by the Ottawa Skeptics Reality Check comics Reality Check comics , an English language manga series Reality Check organization , an anti tobacco movement led by teenagers and operated by the New York State Department of Health Reality Check , a recurring segment on the sketch comedy show MADtv recurring characters Reality Check MADtv Reality check , a technique used in lucid dreaming to determine whether one is actually dreaming Reality Check , the signature move of wrestler Mike Mizanin The Miz Reality Check , an awarded novel by Peter Abrahams Reality Check , a SF short story by Michael A. Burstein In music Reality Check Jassi Sidhu album Reality Check Jassi Sidhu album , a 2003 album by Punjabi singer, Jassi Sidhu Reality Check Juvenile album Reality Check Juvenile album , a 2006 album by rapper Juvenile Reality Check Seagram album Reality Check Seagram album , a 1995 album by rapper Seagram Reality Check Teenagers album Reality Check Teenagers album , a 2008 album by The Teenagers Reality Check band , a Christian music band Reality Check producer , a Drum and Bass artist from the UK disambig it Reality Check ...   more details



  1. Check it Out!

    wiktionary check it out Check it Out may refer to Check It Out Canadian TV series Check It Out Canadian TV series , a Canadian TV series that aired on CTV in the 1980s Check It Out UK TV series Check It Out UK TV series , a British youth TV series produced by Tyne Tees in the late 1970s Check it Out 1987 , a song by John Mellencamp from the album The Lonesome Jubilee Check it Out 1992 , a song by Fu Schnickens from the album F.U. Don t Take It Personal Check it Out 1993 , a song by Das Efx from the album Straight Up Sewaside Ch Check It Out 2004 , a song by the Beastie Boys from the album To the 5 Boroughs Check It Out , with Steve Brule , an American TV series, starring John C. Reilly Check It Out song Check It Out song , by will.i.am and Nicki Minaj Check It Out album , the 1973 album by American soul R&B group Tavares disambig ...   more details



  1. Transit check

    Unreferenced date December 2009 Orphan date February 2009 A transit check or not on us check is a negotiable item cheque check which is drawn on another bank than that at which it is presented for payment. For example, a check drawn on Bank of America , presented for Deposit account deposit at Wells Fargo Bank , would be considered a transit item by Wells Fargo, while the same item presented for cash or deposit at Bank of America would be an on us check . Routing number s, as well as the bank name printed on the check, help to determine an item s classification. See also Clearinghouse Clearing finance Clearing Routing number DEFAULTSORT Transit Check Category Payment systems ...   more details



  1. Safety valve

    For the US sentencing guideline Safety valve law Refimprove date May 2007 Image Oxygen Safetyvalve.jpg thumb 200px An oxygen safety valve Image Valvole di sicurezza di grandi dimensioni.jpg thumb 200px ND250 safety valves A safety valve is a valve mechanism for the automatic release of a substance from .... It is part of a bigger set named pressure safety valve s PSV or pressure relief valve s PRV . The other parts of the set are named relief valve s, safety relief valves, pilot operated relief valve ... method is not defined in any norm when sizing a vacuum safety valve, particularly in the hot ... autonome ultra propre hsv ?lang en Safety valve sized regarding hot CIP Cold water conditions ref ... 200px A cross section of a proportional safety valve The earliest and simplest safety valve on the steam ... and Darlington Railway , the safety valve tended to go off when the engine hit a bump in the track. A valve less sensitive to sudden accelerations used a spring to contain the steam pressure ... proof spring safety valve which became universal on railways. Safety valves also evolved to protect equipment such as pressure vessel s fired or not and heat exchanger s. The term safety valve should ... relief valve s are generally characterized by the relatively small size of the valve necessary to provide protection from excess pressure caused by thermal expansion. In this case a small valve is adequate ... discharged through the relief valve will produce a substantial reduction in pressure. Flow protection ... system HIPPS . Technical terms Image Boiler safety valve of 60163 Tornado.jpg thumb right A steam locomotive boiler safety valve belonging to 60163 Tornado 60163 Tornado In the oil refinery petroleum ... station power generation , food, drinks, cosmetics ans pharmaceuticals industries, the term safety valve is associated with the terms pressure relief valve PRV , pressure safety valve PSV and relief valve . The generic term is Pressure relief valve PRV or pressure safety valve PSV It should be noted ...   more details



  1. Health Check

    Image Health Check Logo.png thumb right Health Check is a food information program created and administered by the Heart and Stroke Foundation of Canada . The primary part of the program is the placement of the Health Check certification logo on the packaging of a food product that meets certain requirements. The logo is a white check mark over a red circle. There are Health Check certified products in all categories of Canada s Food Guide . Does it mean it s healthy? CBC Television CBC Marketplace TV series Marketplace report shows that some products with Health Check mark has high sodium, high sugar content and some of them are paid money for inclusion in the program. See link for details ref http www.cbc.ca marketplace 2008 01 23 hyping health ref External links http www.healthcheck.org Health Check website http www.cbc.ca marketplace 2008 01 23 hyping health CBC Marketplace report References references food stub health stub Category Food retailing ...   more details



  1. Airport check-in

    Image VTBS Thai Check In Counters.JPG thumb Check in counters of Thai Airways International at Suvarnabhumi Airport , Bangkok Image Self check in at Dublin Airport.jpg thumb Aer Lingus self check in at Dublin Airport Image VTBS Passenger terminal check in overview.JPG thumb Overview of the check in facilities ... right Check in Hall A at Leeds Bradford International Airport Airport check in uses service counters found at commercial airport s handling commercial air travel . The check in is normally handled .... Check in is usually the first procedure for a passenger when arriving at an airport, as airline regulations require passengers check in by certain times prior to the departure of a flight. This duration ... miles, or pay for upgrades. The airline check in s main function, however, is to accept luggage that is to go in the aircraft s cargo hold. Check in procedures vary per airline with some airlines allowing ... airports may have different check in procedures. Such differences are usually not noted by the average ... by the procedure that another carrier normally would be willing to do. In town check in service for the Hong ... of check in the Agent s primary duty is to check for valid documents. This include tickets, invitation ... with or after the flight booking. Baggage registration At the time of check in, the passenger ... limit or which is not allowed to be carried is usually handed over to the agent at the time of check in. Seating registration Usually at the time of check in, an option of selecting the seats is offered. The Agent may ask if a window or aisle seat is wanted. Online check in Online check in is the process ... the need to queue at the airport check in counter but passengers with bags to check in still need to queue up and, for international flights, present their identification furthermore, online check ... check in , Sydney Morning Herald , 3 October 2005 ref The process then transfers to passengers the control over their check in. Airlines may use the system because self service is frequently more efficient ...   more details



  1. Check the Meaning

    Unreferenced date December 2009 Infobox single Name Check the Meaning Cover Check the Meaning.jpg Caption 7 and CD cover Artist Richard Ashcroft from Album Human Conditions B side The Miracle Released October 7, 2002 Format Gramophone record 7 , CD single CD , DVD single DVD Recorded Genre Alternative rock Length 8 04 album version br 4 32 edit Label Hut Records Producer Chris Potter producer Chris Potter Last single C mon People We re Making It Now br 2000 This single Check the Meaning br 2002 Next single Science of Silence br 2003 Misc Extra album cover Upper caption Alternative cover Type Single Cover Check the Meaning DVD.JPG Lower caption DVD cover Extra track listing Album Human Conditions Type single prev track prev no this track Check the Meaning track no 1 next track Buy It in Bottles next no 2 Check the Meaning is a song by England English singer songwriter Richard Ashcroft and is the opening track on his 2002 album Human Conditions . The song was also released on October 7, 2002 as the first Single music single from that album in the United Kingdom see 2002 in British music . The single peaked at 11 in the UK Singles Chart . Track listings 7 small HUT161 small Check the Meaning single edit 4 32 The Miracle 3 50 CD small HUTCD161 small Check the Meaning single edit 4 32 The Miracle 3 50 Check the Meaning Chris Potter remix 5 10 Check the Meaning alternative video DVD small HUTDVD161 small Check the Meaning album version 8 04 Check the Meaning video You On My Mind In My Sleep 4Scott Live Performance Recorded live at London nightclub the Scala club Scala , 18 April 2002. DEFAULTSORT Check The Meaning Category 2002 singles Category Richard Ashcroft songs Category Virgin Records singles 2000s rock song stub ...   more details



  1. Substitute check

    multiple image align right direction vertical header Image Replacement Document br Substitute Check header ... width image1 Subcheck FRONT.png width1 300 caption1 Front view of a substitute check image2 Subcheck BACK.png width2 300 caption2 Rear view of a substitute check A substitute check also called an Image ... the digital reproduction of an original paper cheque check . As a negotiable instrument, a substitute check maintains the status of a legal check in lieu of the original check as authorized under the United States law Check Clearing for the 21st Century Act Check 21 Act Check  21 Act . Financial ... name ffiec cite web url http www.ffiec.gov exam check21 Check21FoundationDoc.htm title Check Clearing ... include the faithful reproduction of the paper check and warranty of the instrument by the reconverting ... them during the Clearing finance check clearing process . ref http www.federalreserve.gov paymentsystems truncation About Check Clearing for the 21st Century Act . 2006, March 1 . U.S.  Federal ... Code UCC , existing federal and state check laws, and regulations specific to consumer rights ... to the UCC and existing state and federal check laws, the Check  21 Act takes precedence over ... personal checks, commercial business checks, money order s, traveler s check s and United States ... institution such as a bank commercial bank or credit union that participates in the check collection process to remove or Truncation banking Truncation truncate the original check from the forward collection ... ust eo private trustee library chapter07 docs check21 Check21FAQs final.pdf title The Check Clearing for the 21st Century Act Check 21 Frequently Asked Questions date 2004, October 28 publisher U.S. ... to state law, or later destroy the checks. Legal requirements A properly prepared substitute check is considered the legal equivalent of the original paper check that can be accepted for payment or proof of payment in the same manner as the original check. Every substitute check must adhere to the following ...   more details



  1. Check card

    The term check card can refer to An identification card issued by a retailer allowing the holder to tender payment by cheque check . Such cards were commonly issued in the United States by supermarkets and other retailers before the widespread use of debit card s. A debit card . Category Payment systems ko ...   more details




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