Note: If you are looking for "dab" as in a small amount of a substance (e.g., cannabis concentrate) and a pump for it, that is a niche consumer electronics product (wax pen battery with a pump mechanism) — not an industrial pump. This guide covers the industrial mechanical device. 1. What is a Dab Pump? A Dab Pump (colloquial term derived from "diaphragm") is a type of positive displacement pump that uses a combination of a reciprocating rubber, thermoplastic, or PTFE diaphragm and check valves to move fluid. The most common variant is the Air-Operated Double-Diaphragm (AODD) pump.