Talk:Hagmann valve

	Music portal This article is within the scope of WikiProject Musical Instruments, a collaborative effort to improve the coverage of musical instruments on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Musical InstrumentsWikipedia:WikiProject Musical InstrumentsTemplate:WikiProject Musical Instrumentsmusical instruments articles
???	This article has not yet received a rating on the project's importance scale.

Articles for creation

	This article was reviewed by member(s) of WikiProject Articles for creation. The project works to allow users to contribute quality articles and media files to the encyclopedia and track their progress as they are developed. To participate, please visit the project page for more information.Articles for creationWikipedia:WikiProject Articles for creationTemplate:WikiProject Articles for creationAfC articles
	This article was accepted on 15 August 2007 by reviewer JetLover (talk · contribs).

Untitled

Actually I do think that the traditional trombone rotary valve turns the air flow by 180 degrees... it turns 90 degrees on the way into the valve from the slide, but then 180 on the other end from the extended tubing back into the bell section. Ofiachain (talk) 18:57, 27 January 2013 (UTC)[reply]