fire protection system.
See these links among others
http://www.vikinggroupinc.com/en/technical/233/253
http://www.vikinggroupinc.com/en/technical/233/237/325
http://www.axel-larsson.se/
http://forum.solidagora.com/sites-telechargement-composants-3d-t2907.html
@+ ;-))
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Hello
This site offers many references for download:
http://www.tyco-fire.com/index.php?P=tdsect&S=S13
Edit: it's 2D and not 3D.
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bojour;
The link below contains types of valves with various uses and formats to download
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