|WikiProject Technology||(Rated Start-class)|
|WikiProject Musical Instruments||(Rated Stub-class)|
The type of rotary valve I am looking for is not for a musical instrument. The rotary valve I am interested in is used in the Petrochemical industry. I would imagine the concept is similar, but we need a more discriptive illustration showing the mechanics of the operation.
See: www.fielddevices.com item: Positioners
The diagram of a rotary valve is absolute horrendous and does not in any way lead to a better understanding of what it does, nor does it reveal anything about how it works. Perhaps someone in the know could improve or suggest a more appropriate diagram. Imacdo 19:55, 26 December 2006 (UTC)
So, in the case of the rotary valve trumpet... does this system make it sound different (I know it does) or make it easier to play (not really) or anything else? And there are several things called rotary valves. This article is about the musical ones. I think this article needs a good fixing! 22.214.171.124 (talk) 21:29, 27 August 2010 (UTC)
There doesn't seem to be enough material in this article to split this into "Rotary valves on musical instruments" and "other Rotary Valves". I don't see why this article should be specific to musical instruments when Piston valve is not. I agree that the article needs a good re-organisation, and I can do this and add some diagrams if necessary. There's also an issue of overlap between this article and Four-way valve (this article has an awful diagram too).
I propose to reorganise this article in generic terms and add it to Wikipedia:WikiProject_Chemical_and_Bio_Engineering (there's no reason why it couldn't also remain on musical instruments, or be added to any other project). I'll start work on this in November unless there is any dispute. Wikiwayman (talk) 11:26, 18 October 2010 (UTC)IS A GR