Abstract: The present invention relates to a sanitary closet of the kind in which a hose preferably made of plastic is fed downwards by a down-feeding mechanism. Two disc means are arranged for feeding down provided with closing elements arranged to close the hose temporarily by firmly compressing the hose, spaces positioned between said closing elements and arranged to permit the passage of portions of the hose inflated by the contents thereof and yieldable elements positioned in said spaces and adapted to compress the hose around the material therein permitting the material to pass and squeeze out any air entrapped in the hose.