Abstract: A distributor or dripper includes a housing in which a closing member is movable from a seat adjacent an inlet to a seat adjacent an outlet. When in contact with the seat adjacent the outlet, the closing member forms with the housing a restricted flow channel. Prior to the point at which the closing member contacts the seat adjacent the outlet, a filter is formed which is maintained while the closing member continues movement toward the outlet.

Abstract: A dripper or distributor comprises mainly a closing member which may reciprocate in a chamber between an inlet and an outlet, the closing member carrying an elastic membrane provided with peripheral notches acting to filter the irrigating liquid before the liquid reaches a sinuous groove downstream of the membrane. Elastic radial arms attached to the closing member urge the closing member toward a seat adjacent to the inlet when the pressure applied to the irrigating liquid becomes lower than a predetermined value. When the pressure applied to the liquid is higher than the predetermined value, the closing member is moved toward a seat adjacent to the outlet. During the movements of the closing member between the seats, the dripper is flushed and the particles retained by the filter during the operation of the dripper are ejected therefrom.