Posted for "Alan Adamson" <aadamson@highrf.com>:

Or, you can just deep six the "mechanical" pneumatic switch and use an
electronic version.... I've done this to be used with my Vertical Power
(www.verticalpower.com - my beta testing activities at
legacyair.blogspot.com) installation. There is a PDF listed on my Beta site
that gives the source, part number, etc. Parker makes a small 12 or 14v 3
way valve. While it can be hit with constant voltage, it gets warm. Use
the CoolCube solution (a hit and hold circuit) that is listed to solve this
problem.

In my panel, with the Vertical Power stuff, I'll have no switches! :)...

Alan