QDV Views 5 meanings found QDV is most often used to denote quick‑connect or quick‑dump valves in fluid‑handling systems, while the same letters also appear as file extensions for certain graphics and dictionary files in computing contexts. Miscellaneous Quick- Disconnect Valve Quick Dump Valve Governmental Are you flying in a horizontal visibility of less than ...? Computing Bitmap graphics (8bit) (Random Dot QDV file) Quark Xpress Dictionary File