The outter part of the valve body may have been different to prevent you from
putting an air chuck on the A/C valve, but the inner schrader valve core is
the same as a car tire valve.  You can remove both of them with the same
valve core removal tool as well.  Hope this helps.

Thanks,
Ken Wilford
Van-Again
John 3:16
http://www.vanagain.com
Office: (856)-765-1583
Fax: (856)-327-2242