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Also not sure what your asking. There are 2 AIR valves, Diverter and air switching. Diverter switches air pump air to atmosphere. Air switching switches air pump air from manifolds to converter.
See if you can pick the items from this '87 AIR Illustration that you'd like to discuss. (IHBD) Check somewhere in the vicinity of 4J-26 for an image
*** If you'd like to use eBay for some references search these 2 #'s 17087222 (#68) & 17087221 (#69) for reasonable comparisons. if you've other interests in the illustration - just ask. Did you buy an FSM?