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Stable Isotope Geochemistry

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Subject:
solenoid versus pneumatic valves
From:
Greg Michalski <[log in to unmask]>
Reply To:
Stable Isotope Geochemistry <[log in to unmask]>
Date:
Wed, 18 Jan 2006 09:52:34 -0800
Content-Type:
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Whats the feeling on electrical solenoid valves versus pneumatic?  I 
see alot of using electrical solenoids to controling high  pressure 
air that the actuates a pneumatic valve, which seems redundant if the 
electrical are vacuum tight?  Is there some sort of contamination issue?

Greg Michalski
Purdue Stable Isotope (PSI) facility,
Department of Earth & Atmospheric Sciences
50 Stadium Mall Drive
West Lafayette, IN 47907-2051
Phone: 765.494.3704
Fax: 765.496.1210

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