How can I differentiate the valves?

A Built-in Pump is a pump that is mounted inside of the airbed with the panel portion showing. A 3-in-1 (part# 10650) Valve has two "clips" on either side of the Valve Cap that allows for easy removal. A 2-in-1 (part #10651) Valve does not have "clips" and instead consists simply of a screw-on cap, and a plug that fits on top, and in the center of the cap itself. The Exhaust Valve Cap (part# 10043) and Plug (part# 10044) consists of a rubber stopper plug that is inserted first, while the screw-on cap is placed on top of the plug. The Double-Valve is a vinyl valve stem that is attached to the mattress and is reminiscent of a beach ball valve.