Wet type suction cleaners

A wet type suction cleaner comprising a tank having an inlet for suction-induced air flow and an outlet leading to a fan for creating the suction: and a float valve assembly including a housing and a float member movable relative to the housing to cause closure of the outlet; wherein the inlet directs the suction air flow to impinge on a part of the housing, and the housing has an opening leading to the outlet which opening is at a part of the housing facing away from the inlet, the housing further comprising deflecting means for deflecting impinged matter away from the opening.