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Topic: Thayer Valve

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	Thayer Valve - Wikipedia, the free encyclopedia
		The Thayer Axial-Flow Valve is a replacement for the traditional rotary valve found on trombones with F attachments.
		Invented by Orla Ed Thayer in 1976, it was the biggest advance in the design of the trombone since the rotary valve was added (creating the F attachment) in the mid-1800s.
		When engaged, a rotary valve deflects the air flow through the instrument at least four times, and at least twice at rather sharp angles, leading to a stuffy response and audible tone colour changes, compared to the "open" instrument.
	en.wikipedia.org /wiki/Thayer_Valve (559 words)

	Valves
		Early in the 20th century the valve was introduced to the trombone.
		Originally the second valve was a dependant one, with the combined pitch of E flat, which completed the chromatic.
		The most logical key for this new independant valve became G flat, combined to D. Dependant horns remained popular, becuase of the poor quality of the valves, the sound and feel of only one valve in constant use was preferable.
	www.members.tripod.com /Trombone8vb/lab/valves.html (614 words)

	Thayer - Wikipedia, the free encyclopedia
		Edwin Pope Thayer, Secretary of the U.S. Senate from 1925-1933
		Orla Ed Thayer, inventor of the Thayer Valve for trombones
		Webster Thayer, the judge at the trial of Sacco and Vanzetti
	en.wikipedia.org /wiki/Thayer (222 words)

	Edwards Blog » 2005 » December
		The beauty of the Thayer valve is that the air only bends 30 degrees when you engage the valve.
		Thayer valve recalibrations are easily done by replacing the bearing and adjusting the top plate.
		The Thayer valve is a major part of our trombone design because it offers zero distortion and free-blowing qualities that our competitors have tried to copy (which, we have to say, makes us feel a little flattered).
	www.edwards-instruments.com /blog/?m=200512 (2401 words)

	Handcrafted Trombone Models
		Attachments are available with the Shires Rotary Valve (an improved rotary design similar to the Greenhoe valve; Greenhoes are no longer offered as an option on Shires trombones) or Thayer-based valve (Steve Shire's axial flow valves incorporate his own improvements on the Thayer).
		The Shires philosophy is that airtightness of the valve is essential to the response and centered feel of an instrument, and it is a point of pride with Shires that all valve assemblies are tested for air-tightness and accurate tolerances (it seems that some other custom manufacturers do not conduct such testing).
		Valve options include a specially-developed short pressure action design as well as the usual Thayers and Hagmanns.
	www.geocities.com /yuenli_low/trombone/custom1.html (2365 words)

	Douglas Yeo FAQ: Bass Trombone Valve Systems
		Because the second valve is on the F attachment, depressing the valve lever has no effect unless the thumb valve is depressed.
		Conventional valved instruments went through a long history of experimentation before the currently accepted convention of 2-1-3-4 semitones on the 1st through 4th valves was accepted.
		Prior to the advent of double valve basses, the player who needed a low B would pull the tuning slide to retune the F attachment to E. This was an obvious starting point for the second valve -- push a button instead of pulling a slide.
	www.yeodoug.com /resources/faq/faq_text/valves.html (5093 words)

	[No title]
		I have had several Thayer valves, and the best one that I had was one that was fabricated by Ed Thayer that was coated with iodized aluminum.
		Thayer Valve International, Ed's company, had manufactured anodized cast aluminum rotors since 1993.
		TVI began selling valves and valve units in January 2002 This is quite a tangle, but if anyone has questions about Thayer valves please email me with serial numbers and dates.
	www.trombone.org /trombone-l/archives/0210/021030.txt (7391 words)

	Specifications of Current Trombone Models
		Many people (myself included) find the conventional rotary valve on the 42B and 42C to be stuffy compared to that on the Conn 88H - the reason for this, apparently, is that the Bach rotor ports are comparatively small in bore.
		The most common complaint about Holton bass bones is that their rotary valve sections do not produce a sound as good as those of their competitors (due to undersized bore in the valve ports and attachment tubing, although the resulting additional resistance is said by some to aid the production of low notes).
		These instruments (namely the Symphony 1600 bass trombone series and the CR-variants of the Signature 1500 series) and valves are currently receiving rave reviews, and apparently compare well with the likes of Shires, Edwards, Rath, etc. And it seems that further instruments based (and improved) on other classic designs are in the works...
	www.geocities.com /yuenli_low/trombone/allspecsv2ehtm.htm (3632 words)

	Sellin` my trombone
		Actually, Orla Ed Thayer invented the Thayer valve and it is the one that they currently use on Getzen trombones.
		Bach stole the name Thayer and began producing it`s own version of the axial flow valve, which is just the technical term for that style of valve.
		The valves that Bach is producing are of terrible quality, with some having as much as a millimetre of lateral movement.
	www.8notes.com /f/30_77828.asp?spage=1 (1142 words)

	Ferguson Music Specializing in Fine Trombones & Low Brass (Site not responding. Last check: 2007-11-02)
		Valves are proprietery designs, and are the fastest and best sealing on the market.
		The Shires axial flow valve is notably higher in quality and action than the other axial valves you see on the factory horns.
		These valves may need oiling and cleaning more often, the lever throw is a little longer, and some players get bothered by the intrusion in to their neck due to the large size of this valve.
	home.comcast.net /~stevenferguson/lgtbnshires.htm (1409 words)

	Bach Musical Instruments at MSN Shopping
		More 25 mouthpipe, Monel valves, lacquer finish.Please Note: All Bach trumpets and cornets come with 1st valve slide hook, 3rd valve slide ring, case, and mouthpiece, unless otherwise specified.
		More brass mouthpipe, 3 nickel-plated nickel silver pistons with bottom-spring action,bronze valve springs, pin-type plastic valve guides, anodized valve stems, one-piece valve casing, brass inside tuning slides and tuning slide receivers, one water key, lyre holder, silver-plated finish.
		Please Note: All Bach trumpets and cornets come with 1st valve slide hook, 3rd valve slide ring, case, and mouthpiece, unless otherwise specified.
	shopping.msn.com /results/shp/?bCatId=5378,minPrice=1800,maxPrice=4899.99,av=2-130606 (540 words)

	F-Attachment @ iBowTie.com
		On most instruments a rotary valve is used to control the flow of air.
		Some horns have different valves that move the air less of an angle and making them more "free blowing" and "open." The Thayer valve, the Haggman valve, the Greenhoe valve, and several other variations all are used to make the turning of the air into the tubing less of a hard angle.
		Engage the valve and place the slide in second position and it is about the same as seventh position.
	www.ibowtie.com /fattachment.html (815 words)

	Gary Greenhoe Says:
		The important change with an axial flow valve is actually from the length of the sound path through the valve itself.
		The cone of the axial valve is actually floating in the wall of the casing.
		The next problem incurred with the advent of axial flow valves, was to add mass to the instrument to regain some of that dissipated energy.
	www.greenhoe.com /About/GarySez.htm (1554 words)

	Ferguson Music Specializing in Fine Trombones & Low Brass (Site not responding. Last check: 2007-11-02)
		Valves are either the standard Bach rotary valve or the Thayer axial flow valve.
		The horn and rotary valves are hand made in Elkhart, Indiana.
		The Thayer valve and wrap is made by O.E Thayer Inc.
	www.hornguys.com /lgtbnb42.htm (298 words)

	brass
		Slides are available in.547" bore with a small or large crook, and in.547/.562" bore with a large crook.
		F-attachment horns are available either with a Shires Rotary Valve or a Thayer Axial Flow valve.
		Shires' new small bore jazz horn has shown to be very popular with players uses to large bore tenors who need a jazz horn that isn't stuffy but has the right sound for jazz.
	www.kmmusic.com /brass.htm (541 words)

	The Open Horn :: View topic - buy a bach42 but what model??? (Site not responding. Last check: 2007-11-02)
		I have the exact same model horn, which I recieved yesterday with the balanced valve disposed of, and an Orla Ed Thayer valve installed (on of Ed's valves).
		I never spent a lot of tike on the K valve before I had it converted, but I think it sat further back towards the tuning slide, and the bottom part of the valve used to dig into my neck.
		The first valve is touching my jaw, so it wont move further downwards, and the second valve is resting underneath the bone behind my ear, so it won't move further upwards, which means I can't adjust the horn to the left; my natural playing position.
	samburtis.com /forum/viewtopic.php?p=18198&... (1612 words)

	N.A.M.M. Tests
		This valve looks like a standard trombone rotary valve, but the casing is about 10% bigger, and instead of the inside rotor being machined from a chunk of brass, it's made with individual tubes inside, much like the method of making a trumpet valve.
		The.547 valved horn was snappier and faster responding, but the.562 valved horn has a bigger more modern orchestral sound, and just seemed to make more sound, especially in the low range.
		I think this is because the neckpipe on a trombone expands right from the slide connector area, and the larger valve lets it expand faster, whereas the smaller valve keeps the bore small until after the valve.
	www.csulb.edu /~lmarstel/namm.htm (4637 words)

	Hickeys Music Center - Bach Trombones
		Bach Stradivarius 42 series trombones can now be purchased with Thayer Valve systems (42T) which eliminate sharp crook tube bends within the rotor itself, allowing for a free and umimpeded flow of the air column.
		This valve design revolutionized the trombone beginning in the middle 1980's, and has been a popular option for pro players ever since.
		The valve's unique design, coupled with standard open wrap valve tubing, prevents constriction of the airflow and thus makes the horn more even throughout the valve register and easier to blow.
	www.hickeys.com /cgi/display.cgi?page=bachtbns.htm (2531 words)

	Edwards :: Trombones :: Valve Maintenance
		It is easy to take these valves apart but one must be careful to not: 1) drop the valves, 2) accidentally use F valve in Gb casing (on bass), and 3) drop oil onto your wife's new carpet.
		If a valve is slow or sluggish, it needs rotor oil on the inside of the valve.
		Once reassembled use a spot of Edwards spindle oil on each side of the rod end bearings, valve springs, and both sides of the trigger spindle (trigger spindle is what trigger spring goes around).
	www.edwards-instruments.com /trombone/maintenance (799 words)

	Bach 42T Professional Trombone with Thayer Valve 42T- Standard slide, yellow brass bell
		Bach Stradivarius Tenor Trombones with Thayer valve F attachments.
		The Thayer valve eliminates restriction from the open wrap tubing of the F attachment.
		The "K" valve system was designed by the Bach company as an alternative to the traditional rotor system for the purpose...
	www.shoptony.com /music123/bach-t-25035.html (370 words)

	Awesome Trombone Links - data from ODP
		Known for the Axial Flow Valve as well as customizing and building your own trombone from bells, slides, leadpipes, and valves.
		Hagmann Free-Flow Rotary Valve - From Rene Hagmann in Geneva, Switzerland.
		Famous for the R1 model, the Hagmann valve, as well as a family of sackbuts modelled on instuments made by Anton Schnitzer in the 16th century.
	www.awesometrombonelinks.net /dmoz/odp-manufacturers.htm (772 words)

	Thayer Case Study (Site not responding. Last check: 2007-11-02)
		Ice company uses Thayer model “SB” Insertion Weight for batch weighing ice for commercial fishing vessels at rates up to 30 TPH.
		The ice is produced, crushed and conveyed down a chute to the SB Belt Scale surface.
		Once on the scale the SB weighs the ice and feeds it to a rotary valve where it is then pneumatically conveyed to the fishing vessels.
	www.thayerscale.com /cssbiprint.html (115 words)

	Pro Quality Trombones
		In the last 15 years there have been some technological innovations, not the least of which is the Thayer axial-flow valve.
		It’s a cone shaped valve which, instead of doing the 90 degree turn against the direction of air flow, gives the air only a slight change in trajectory as it’s diverted into the F attachment tubing.
		Combining this with the Thayer valve is probably the most state of the art a trombone gets.
	www.dallasmusic.org /boneyard/probone.html (760 words)

	eMedicine - Mitral Valve Prolapse : Article by Adam E Schussheim, MD
		Floppy mitral valve–mitral valve prolapse (FMV-MVP) is often considered a genetic disorder of connective tissue.
		MVP is diagnosed by observing abnormal motion of the mitral valve leaflets relative to their surroundings.
		In a study of 237 retrospectively identified asymptomatic subjects with MVP followed for a mean of 6.2 years, Nishimura found a survival rate no different from the actuarial rate of a matched population.
	www.emedicine.com /med/topic1484.htm (1992 words)

	Getzen : Gazette : October 2001 (Site not responding. Last check: 2007-11-02)
		Achieving new developments such as the Thayer Valve (trombone axial flow valve) has been an integral part of improving Getzen instruments.
		This forward thinking has led to the development of improved valve sets and bell manufacturing for both the trumpet and trombone lines.
		Doc's return is both an honor and a sign of the good things to come for the Getzen Co. Many plans are currently in design for even more developments and improvements in the product lines.
	www.getzen.com /gazette/oct2001.shtml (567 words)

	Ferguson Music Specializing in Fine Trombones & Low Brass (Site not responding. Last check: 2007-11-02)
		It's one of their top end Custom models made for players who prefer the new Thayer axial flow valve.
		The bell and valve section are removable, and you can purchase extra bells or a straight no-valve neckpipe and counterweight.
		The bells are 22 gauge 8.5" yellow or rose brass with a soldered rim.
	www.hornguys.com /lgtbn3047af.htm (245 words)

	Basstrombone.nl :: View topic - Testing a prototype Willson/Thayer valve bass!
		The instrument I play-tested was a prototype, inline two valve, bass trombone, from the Swiss manufacture, Willson.
		Not being a Thayer valve player, I was happily surprised at the quality of the sound produced in these areas of the trombone.
		It looks like there may be some tubing/valve leaking, valve adjustment problem, or a problem in the gooseneck area of the Willson bell section, which may be causing this intonation problem, with the Willson/Thayer bell section.
	basstrombone.nl /forum/viewtopic.php?t=534&... (970 words)

	The Harvard Crimson :: News :: Yard Residents Lose Hot Water (Site not responding. Last check: 2007-11-02)
		The defective valve between Thayer Hall and Memorial Church must be replaced before it bursts, said Bray-Stazinski.
		"We feel the valve will hold to the weekend, when we'll replace it in a controlled situation," said Charles W. Gordon, an area supervisor in the facilities maintenance department.
		The valve will be repaired on Saturday when Yard buildings such as Emerson Hall, Sever Hall, Widener Library and Houghton Library see less traffic, according to Bray-Stazinski.
	www.thecrimson.com /article.aspx?ref=226448 (275 words)

	BiNaK 495 Buy Wholesale. Retail the brand name you know! Testimonial Page 20 (Site not responding. Last check: 2007-11-02)
		used before on valves or rotors, which may explain why it lasts so well.
		Since Thayers are famous for leaking air, thicker oil to improve the air
		valves were as smooth as though they'd been oiled and played every day.
	www.binak.com /testimonials20.htm (343 words)

	Jazz T-Bone: The homepage for Joe Jackson
		It's a beautiful looking horn, and I brought one back with me. No traditional 88H's were shown though one was displayed with the Lindberg valve, and another with the 9H large throat K style bell, originally used on the King 5B.
		Kanstul's top trombones with rotary valves feature the oversize CR valve, similar to what you might see on a Shires or Greenhoe trombone, but with lighter construction.
		Steve Shires' new TB trombone rotary valve is now available in limited production, but do add $150 to his boutique priced trombones for the privilege of obtaining one.
	www.jazztbone.com /2005/2005_01_25.htm (2919 words)

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