| 摘要 |
PROBLEM TO BE SOLVED: To provide a filter device including a flow passage switching valve for easily taking a flow passage in respective processes, capable of securing water communication capacity large, and also easy in assembling and maintenance with a simple constitution.SOLUTION: The filter device comprises a pressure tank 3 for storing a filter-medium floor, a flow passage switching valve 1 and a control part 150. The flow passage switching valve 1 is provided with a plurality of valves in a valve housing 5, the valve housing 5 and a camshaft 48 for operating the respective valves are provided along the lateral direction, and the plurality of valves are longitudinally separately arranged in a first valve group 49 and a second valve group 50 with the camshaft 48 as a boundary. The first valve group 49 is laterally juxtaposed with a first water communication valve 6, a second water communication valve 7 and a bypass valve 8, the second valve group 50 is laterally juxtaposed with residual valves not included in the first valve group 49, and the control part 150 outputs a command signal for switching a flow of fluid of water communication operation and a flow of fluid of cleaning operation, to the flow passage switching valve. |
