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Thayer axial flow valve on a tenor trombone
The axial flow valve, or Thayer valve, is a brass instrument valve design patented in 1978 by Orla Ed Thayer.[1] Designed with assistance from Zigmant Kanstul, it was originally intended to replace the traditional rotary valve on the French horn, but instead revolutionized the design of trombone valve attachments.[2] Combined with open-wrap tubing, it eliminates the impedance caused by tight tubing bends, improving the airflow through the instrument and the open "feel" perceived by the player.
^US patent 4112806, Thayer, Orla E., "Axial flow valve", issued 12 September 1978, class G10D9/04
^Yeo, Douglas (2021). "axial flow valve". An Illustrated Dictionary for the Modern Trombone, Tuba, and Euphonium Player. Dictionaries for the Modern Musician. Illustrator: Lennie Peterson. Lanham: Rowman & Littlefield. p. 13. ISBN 978-1-538-15966-8. LCCN 2021020757. OCLC 1249799159. OL 34132790M. Wikidata Q111040546.
The axialflowvalve, or Thayer valve, is a brass instrument valve design patented in 1978 by Orla Ed Thayer. Designed with assistance from Zigmant Kanstul...
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trombone in F with two independent valves. The early 1980s saw the emergence of the axialflowvalve, known as the "Thayer" valve after its American inventor...
limitations of the regular rotary valve, as well as the reliability and maintenance issues of the popular Thayer axialflowvalve that arise from its relatively...
compressor in which the gas or working fluid principally flows parallel to the axis of rotation, or axially. This differs from other rotating compressors such...
the basic design also in use, such as the Thayer axialflowvalve and the Hagmann valve. Rotary valve was first applied to the horn in 1824 by Nathan Adams...
An axial piston pump is a positive displacement pump that has a number of pistons in a circular array within a cylinder block. It can be used as a stand-alone...
valve designs would allow. Many of these new valve designs have been widely adopted by players, especially in symphony orchestras. The Thayer axial flow...
A valve is a device or natural object that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening...
long travel axially (the control input) makes for a very small and precise change radially (affecting the resultant flow). Needle valves may also be used...
animation: angle choke valve Mokveld Product animation: axial choke valve External Sleeve Choke Valve Short video of a choke valve operating on a chainsaw...
check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through...
valve is a biological one-way valve that allows blood to flow in one direction through the chambers of the heart. Four valves are usually present in a mammalian...
engines use a power valve system to get similar results to VVT. The valves within an internal combustion engine are used to control the flow of the intake and...
excessive flow rates, lowering the pressure at each stage. The terms "regulator" and "demand valve" (DV) are often used interchangeably, but a demand valve is...
duct. The blow-off valve is normally only opened at throttled conditions, since it wastes energy. Flow Matching Of The Stages Of Axial Compressors, Geoffrey...
models employ a dual-bore slide, and many models are now made using Axial or Hagmann valves. Double slide contrabass trombones are still made by German makers...
flow due to bends, corrugations, changes of flow direction, valve cracking pressures, flow through scrubber media, etc., and the resistance to flow of...
axial-flow pumps. In centrifugal pumps the direction of flow of the fluid changes by ninety degrees as it flows over an impeller, while in axialflow...
reptiles have three chambers. In a healthy heart, blood flows one way through the heart due to heart valves, which prevent backflow. The heart is enclosed in...
aerodynamic instability in axial compressors or centrifugal compressors. The term describes violent air flow oscillating in the axial direction of a compressor...
Both free-flow and demand regulators use mechanical feedback of the downstream pressure to control the opening of a valve which controls gas flow from the...
dynamic discharge valve present (since there are additional discharge flow losses associated with the presence of the discharge valve as well as discharge...
have a radial and axial velocity component at the exit from the rotor. The diffuser is often used to turn diagonal flow to an axial rather than radial...
restriction. Under choked conditions, valves and calibrated orifice plates can be used to produce a desired mass flow rate. If the fluid is a liquid, a different...
most as being used in vacuum cleaners and turbochargers, but multistaged axial-flow compressor types, similar to those used in most jet engines, could work...
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