公开(公告)号：US20210069619A1

公开(公告)日：2021-03-11

申请号：US16644929

申请日：2019-01-22

Applicant: AMIAD WATER SYSTEMS LTD.

Inventor： Ra'anan BEN HORIN ,  Kfir ATIAS ,  Alex ZENDEL

IPC: B01D29/66 ,  B01D29/52 ,  B01D29/15 ,  B01D35/12 ,  C02F1/00 ,  F16K11/083 ,  F16K11/085 ,  F16K11/22

Abstract: A filtration system is disclosed, which comprises a filtration-element within a filtration chamber, and a valving device located exteriorly to the filtration chamber, for reversing the direction of fluid-flow through the filtration-element for backwashing. The valving device thus functions as a common valve for handling both filtration and backwash. The common valve is based on a linearly-movable plug located inside a valve housing which is communicable with the filtration chamber, with a source of fluid to be filtered, and with evacuation port for backwash fluid, through three respective openings in the valve housing, and is characterized by an uninterrupted bend-free flow-channel extending at least from exteriorly to an inlet opening of the valve housing, to the body of the filtration-element whenever the common valve is in a filtration mode of operation.