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Topic: Tap (valve)

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	Tap (valve) - Wikipedia, the free encyclopedia
		A tap is a valve for controlling the release of a liquid or gas.
		Although a gas tap may be a valve that releases any gas, the word is most commonly used to refer to taps that control the flow of fuel gas (natural gas or, historically, coal gas, syngas, etc.) in the home (for gas fires or other appliances) or in laboratories (for Bunsen burners).
		At intermediate flow settings the pressure at the valve restriction drops nearly to zero from the venturi effect; in water taps, this causes the water to boil momentarily at room temperature as it passes through the restriction.
	en.wikipedia.org /wiki/Tap_(valve) (1591 words)

	Mechanical actuator for dispensing tap - Patent 5102017
		Valve element 44 is connected to the top interior of resilient diaphragm 42 so that when the top of said resilient diaphragm 42 is reflected downward, valve element 44 is caused to move away from its seat.
		Tap actuator embodiment 130 is comprised of a fixed pivot or hinge 131, a first or upper lever 132, a pair of second or lower levers 139, a pair of horizontally aligned moveable or floating hinges 133, a link 134, and a moveable pivot 135.
		Unlike the dispensing tap embodiments disclosed earlier herein, the discharge opening 645 of tap 640 is generally perpendicular to the axis of valve element 644.
	www.freepatentsonline.com /5102017.html (3142 words)

	Line tap valve - Patent 4018246
		A line tap valve as defined in claim 6 wherein the outer end portion of said annular bushing is externally chamfered to define a frusto-conical outer wall portion against which said annular ring portion is swadged upon the screwing of said valve cap in place upon said body member.
		It is another object of this invention to provide a line tap valve of the character described including means controlled by the tightening of a screw-on valve cap upon the valve body for permanently attaching the piercing needle mechansim after the valve body has been soldered or brazed to the line to be tapped.
		The valve cap 12 is preferably of hexagonal cross-sectional shape to facilitate screwing and unscrewing in place with an open-end wrench or similar tool, and is formed with coaxial, internal threads 47 for screw-thread reception upon the externally-threaded portion 14 of the valve body member 11.
	www.freepatentsonline.com /4018246.html (1904 words)

	General Maintenance - Lambretta Fuel Tap
		The last step before the fuel valve removal is to remove the linkage to the exterior frame handle by removing one of the cotter pins in the linkage.
		The valve contains a brass nut which pulls the tank and valve together when tightened (the tap portion is reverse threaded).
		If the valve is truly blocked, try removing the rotating part connected to the linkage to get access to the rubber gasket and fuel passageways.
	www.scooterhelp.com /genmaintain/lam.fuel.tap.html (493 words)

	Cure a leaking tap - replace the washer (Site not responding. Last check: 2007-10-09)
		The next step is to release the tap valve, use a correct sized spanner above the joint and firmly hold the tap spout to prevent the body of the tap turning on the basin or sink - if the tap does move, the connection under the basin/sink may be loosened causing a leak.
		Before replacing the tap valve check to make sure that the tap seat is not undamaged, if it is damaged, repair it before replacing the valve.
		Assembly of the repaired tap valve and knob is the reverse of dismantling.
	www.diydata.com /problem/taps/washer_replace.htm (388 words)

	Geneva Valve Tapping Services, Taps
		Tapping is the process of making a new hole or line into an existing line without having to reduce pressure and shut the system down.
		Tapping tees can be installed that eliminate the need for extensive training and multiple-person crews.
		Hot tapping / Pressure Tapping is when access is made to the inside of an pipe that is still under pressure, using either a drill or a circular cutter.
	www.genevavalvetapping.com /taps.html (356 words)

	Regrinding a tap seat to prevent a dripping tap (Site not responding. Last check: 2007-10-09)
		A dripping tap cannot always be cured by just fitting a new washer, sometimes the valve seat has become damaged.
		The valve seat is what the washer closes onto when the tap is closed.
		The correct size serrated cutter for your tap will be the one that just fits through the opening, and the correct size bush is tightened in the threads which held the tap valve.
	www.diydata.com /problem/taps/taps_seats.htm (433 words)

	Repairing A Dripping Tap UK : Diy Hints, Tips & Advice : Diy Doctor
		The next step is to release the valve, but first make sure the tap is wedged firmly in position (if it moves while undoing a tight valve nut, it may loosen the water connection underneath) and place a cloth over the tap to avoid scratching the metal.
		The operation of the tap handle, opens or closes the washer against the seat, which is a small shelf just inside the body of the tap.
		The correct size serrated cutter for your tap will be the one that just fits through the opening, and the correct size thread is needed to tighten up in the threads which held the valve.
	www.diydoctor.org.uk /projects/dripping_tap.htm (792 words)

	On Tap Magazine - Winter 2004
		According to AWWA, “Each valve should be operated through a full cycle and returned to it’s normal position on a schedule that is designed to prevent a buildup of tuberculation [rust formation in pipes as a result of corrosion] or other deposits that could render the valve inoperable or prevent a tight shutoff.
		The interval of time between operations of valves in critical locations or valves subjected to severe operating conditions should be shorter than for other less important installations, but can be whatever time period is found to be satisfactory based on local experience.
		This is usually the result of something happening inside the valve as it nears the closed position: the worst tuberculation in the valve happens; the discs spread, requiring higher torque (rotational force) to pull them back together; or there is some pressure on the gate from the water pressure on either side of the gate.
	www.nesc.wvu.edu /ndwc/articles/OT/WI04/valve.html (1757 words)

	NC30/NC35 Fuel Tap Vacuum Bypass
		The basic procedure is to disassemble the fuel tap, disconnect the small rubber diaphragm from the large rubber diaphragm and aluminum piece, disconnect the plastic piece from the large diaphragm, connect the plastic piece to the small diaphragm and re-assemble it, discarding the spring and large rubber diaphragm (including the little aluminum piece).
		The fuel tap is made up of two plates (a middle plate, and an outer plate) and the actual tap or valve.
		Regardless, the fuel tap should not be left in the open position when the bike is not in use (close the valve at the end of a race day).
	akhara.com /nc30/fueltapmod (1241 words)

	Discover the Wisdom of Mankind on faucet (Site not responding. Last check: 2007-10-09)
		This is a single, more complex, valve whose handle moves up and down to control the amount of water flow and from side to side to control the temperature of the water (achieved by mixing the hot and cold water together).
		Although a gas tap may be a valve that releases any gas, the word is most commonly used to refer to taps that control the flow of natural gas in the home (for gas fires) or in school science laboratories (for Bunsen burners).
		This is called a "globe valve" in engineering and, while it gives a leak-proof seal and good fine adjustment of flow, the tortuous S-shaped path the water is forced to follow offers a significant obstruction to the flow.
	www.blinkbits.com /blinks/faucet (1574 words)

	Petersen Products Company (Site not responding. Last check: 2007-10-09)
		The tapping saddle and valve may be obtained from many pipeline supply companies including US Filter.
		Be careful to have the ends of the flexible polyethylene pipe taped during insertion and then trapped in the pipe nipple on each end of the plug to prevent rupturing the bladder.
		Open the hot tap valve and allow the pressure in the insertion pipe and tapped pipeline to equalize.
	www.pipeplug.com /multiflex.htm (494 words)

	Ceramic Disc Taps UK : Diy Hints, Tips & Advice : Diy Doctor
		Should you be unlucky enough to have a tap wherein the parts do actually "wear out" then it is unlikely you will be able to replace the discs and will probably need to replace the whole cartridge within the unit.
		The disc tap should be virtually indestructible because a) the ceramics do not wear out, and b) The distance moved by any part of the tap in any one go, is only a quarter of a turn.
		Photo 4 shows the same tap valve with the discs closed, meaning the tap would be off.
	www.diydoctor.org.uk /projects/ceramic_disc_taps.htm (912 words)

	Vaal Triangle Info Encylopedia - Tap (Site not responding. Last check: 2007-10-09)
		Taps and dies, a device for cutting threads to receive a bolt
		Tap (film), 1989 movie starring Gregory Hines and Sammy Davis Jr To tap a furnace containing molten metal is to remove the metal from the furnace, even if no valve as such is utilised in the process.
		TAP, an abbreviation with a number of meanings.
	www.vaaltriangleinfo.co.za /wiki/?title=Tap (150 words)

	Hot Tap Tool (Site not responding. Last check: 2007-10-09)
		To tap a hole through the pipe wall, a service valve is installed on the fitting.
		After the hole is cut through the pipe wall, the tool is removed from the valve and the retrieval tool is then used to pull the cutter assembly and pipe plug from the fitting.
		The hot tap procedure may be expedited by use of an air operated drill motor to turn the cutter shaft.
	www.alspi.com /hottap.htm (331 words)

	Tamperproof Hose-Union Bib Tap Category 3 from Arrow Valves
		The top position conceals the tap crutch top and the hose connector; the mid position allows access to the tap but leaves the hose connection concealed and the lower position facilitates the connecting of a hose or the filling of a bucket.
		A thermal insulator is used between the bib tap and Standpipe body and the pipes are covered with polyethylene Insulation.
		Every external hose union tap shall be located in a tamperproof housing; comprising of a galvanised steel body, finished with a dark green nylon coating — model SPED - manufactured and distributed by Arrow Valves Ltd - Tel 01442 823123 www.arrowvalves.co.uk.
	www.arrowvalves.co.uk /productdetail.php?id=33 (474 words)

	Tap Tap Tap Tap Tap Tap - Forums
		I know to do a valve adjustment I have to measure what the clearance is at right now between the cam and the top of the valve.
		It has dual cams and you can not adjust the valves because they run on a cam but, you can change the weights in the cam but the noise i don't think it is anything to worry about....
		I had the valve cover off and it doesn't sound right to me. Its a bit louder than the normal tap you get from valves that need to be slightly adjusted.
	www.texasatvs.com /forums/showthread.php?t=3150 (1306 words)

	Cart Lifters, Cart Tippers, Cart Dumpers - Hydraulic Tap-In Kits by Bayne Thinline Premium Lift Systems, Greenville, SC. (Site not responding. Last check: 2007-10-09)
		A diverter valve diverts some of the vehicle's hydraulic fluid from the main system into a separate line to power an auxiliary system, such as a cart lifter.
		In the past, even the best diverter valves would either reduce the flow of the system's hydraulic fluid to the point where the packer panel would slow down, or it would lower the hydraulic pressure, making it impossible for the bodies to pack as much refuse per load as they were designed to.
		Any time hydraulic fluid is pushed through a valve or fitting, the system pressure drops and energy is dissipated in the form of heat - the archenemy of hydraulic systems.
	www.baynethinline.com /products_tapinkit.htm (449 words)

	Welcome to MoreBeer (Site not responding. Last check: 2007-10-09)
		The valve has two regulators built in that hold a constant 15 psi, to maintain a constant carbonation level.
		There is a built in check valve to stop the gas from going from the bottle into the valve.
		The valve itself is covered by a one year warranty against any manufacturing defects.
	www.morebeer.com /product.html?product_id=18291 (662 words)

	Domestic Hot Water Scald Burn Lawsuits: Open and Obvious Problems (Site not responding. Last check: 2007-10-09)
		It is not open or obvious to the average prudent member of the community that the risk of tap water scald burns increase exponentially with relatively small increases in decrements of temperature change.
		It is or should be open and obvious to hotel/motel/apartment managers and owners and maintenance personnel that the hot water temperature adjusting screw in individual point of use shower antiscald valves may have to be readjusted after remodeling, etc, and this is not obvious nor should it have to be a concern to the consumer.
		It is not open or obvious to the ordinary consumer in an apartment complex when a point of source tempering valve does not fail safe, but maintenance should periodically check that valve and replace it if the point of source valve is not a fail safe design.
	www.tap-water-burn.com /pamphlet/obvious.htm (1101 words)

	Ontap Drinking Water Filter Systems (Water Purification) Fitting
		If you are not sure which pipe is the cold one, run the hot tap for a few seconds and mark the cold pipe with a felt pen.
		Assemble and fit the tap according to the diagram and tighten the nuts with a 10mm or adjustable spanner.
		Unscrew the mounting nut and position the valve on the cold pipe as in the diagram.
	www.ontapsystems.co.uk /installation.htm (891 words)

	Welcome to the ProTapping Web Site-Services-Valve Insertions
		alve insertion is a method of inserting a specialty gate or ball valve directly into an existing main, while the existing pipeline is under working pressure, without interruption of flow or service.
		alve insertion employs a specialty pressure contained tapping/inserting machine, a full-port inserting valve and a pressure-contained insertion sleeve that is attached (bolted) to the existing pressurized pipeline.
		Valve insertions can be performed on cast iron, ductile iron, limited transite/ACP, and limited concrete cylinder pipe.
	www.protapping.com /valveinsertions.html (185 words)

	Aqualoc Tap Valves - Stop Leaking Taps
		Aqualoc is an inexpensive alternative to ceramic cartridges, the Aqualoc tap valve design creates a vacuum, rendering even the oldest, stiffest taps very easy to turn on amd off.
		Aqualoc Tap Valves were gold medal winners at Geneve 1999.
		Aqualoc Tap Valves were internationaal gold medal winning plumbing invention at geneva 1999.
	www.aqualoc.com.au (652 words)

	Water Savers Directory - Dripless water saving tap valve (Site not responding. Last check: 2007-10-09)
		The Tap Valves are made in four sizes to accommodate varying tap hardware.
		Jim knew that to make the tap valve a success, quality would have to be controlled and manufacturing costs would have to be as low as possible, thus he went to China, where after long protracted negotiations he has been able to have the valve produced at the desired quality and cost.
		All expressed their sincere desire to introduce the Tap Valve into their areas to decrease the pressure on their ever growing water demand and to minimise maintenance costs.
	www.watersaversdirectory.com.au /tatic/index.htm (2079 words)

	SPACE.com -- Spacewalk No. 2 Tonight, Airlock Debut Still on Tap Despite Valve Trouble
		The faulty valve is one of two located near a submarine-like hatch that separates the Unity module and the new station airlock.
		While the capped valve cannot be opened and shut by remote control, the airlock still could be re-pressurized within 12 seconds in a crisis situation.
		Hill said the valve ultimately will be replaced with a spare, but mission managers are not in a rush to carry out that job, which would take about two hours.
	www.space.com /missionlaunches/missions/sts104_am_010717.html (945 words)

	Edwards Unveils Ascendra Aortic Heart Valve Replacement System (Site not responding. Last check: 2007-10-09)
		In the TAP procedure, clinicians utilized the Cribier-Edwards percutaneous heart valve technology, which integrates a balloon-expandable stent with an aortic replacement tissue heart valve.
		The balloon-mounted valve was compressed to the approximate diameter of a pencil, then inserted through a small incision between the ribs and delivered through the bottom apex of the heart, where it was deployed inside of the native valve.
		While traditional aortic valve replacement surgery requires opening the patient's chest, stopping their heart, and managing their circulation on cardiopulmonary bypass for at least an hour, the first TAP procedure was completed on a beating heart less than 30 minutes after the surgical mini-incision was made.
	www.edwards.com /NewsRoom/NR20051129.htm (737 words)

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