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English: Operation of René Hagmann's Free-Flow valve, in default (A) and engaged (B) positions. 1. air flow, from mouthpiece; 2. air flow, to bell; 3. air flow to and from valve tubing; 4. valve casing; 5. valve cap; 6. straight-path valve port; 7. valve ports to tubing, emerging from the top of the valve casing; 8. spindle axis of rotation.
It is usually constructed of brass and resembles a 90-degree elbow with a hood on its top to allow air to enter the water system if a siphon attempts to form. Inside this elbow is a poppet valve that is held "up" by the water pressure found in the system, closing the air entrance to the device. If the pressure in the "upstream side" is reduced ...
Hose barb fittings are small curved, bent or T-shaped pipes, hoses or tubes with hose barbs on at least one side used to join two or more pieces of piping (hosing, tubing) together. [1] Hose barbs are commonly used in the agriculture industry to connect anhydrous ammonia (NH 3) hoses. [2]
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Diagram illustrating the effects of moving the slide of a brass instrument. Date: 5 August 2007: Source: Created by bdesham in Inkscape. Author: Benjamin D. Esham : Permission (Reusing this file) As a courtesy (but not a requirement), please e-mail me or leave a note on my talk page if you use this image outside of Wikipedia. Thanks!
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]
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