The wv 470 are by design wet or dry vacuum cleaners that perform totally without compromise in either mode we know full well that when you want to operate as a dry machine performance must be as good as a dry only machine with big filters and the option of giant hepaflo disposable dust bags ensuring a high standard of operation similarly when required for wet work a quick switch of the dry filter for the wet float valve and a change of floor nozzle will give you equally professional perf