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 performance and a clean, dry floor at the end of it all.