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Air-to-Open/Air-to-Close Valves


Learners examine how air-to-open valves and air-to-close valves are used in different situations. A brief quiz completes the activity.

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I learned a lot and now,can solve my problems.thanks a lot

Posted by mahnaz mirbagheri on 5/29/2012 9:13:43 AM Reply

Fantastic, it was really helpful for me.


Posted by Homa Mohammadi on 5/27/2014 5:54:47 AM Reply

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