The 2011 compressor seems to run extremely hot from my limited experience with it, and by hot, I mean hot enough to burn your hand if you're not careful.
Interestingly enough, Andymark has started to stock the Valair compressors:
http://www.andymark.com/product-p/am-2005.htm
AM's recommendation is that they're not to fill more than a 1 Gallon Tank. There are approximately 231 Cubic Inches in 1 Gallon. From here, you should be able to calculate whether or not you may be overtaxing the compressor.