Y-type filter, the use of hydraulic control valves and precision mechanical products easily plug must have filtration equipment. Usually installed in the hydraulic control valves and other equipment, the inlet to prevent particles of impurities into the channel, causing blockage, so that failure of the valve or other device is not working. Y-type filter structure is simple, small flow resistance, can be removed online without having to exclude dirt. Y-bar stretching the length of the filter also has installed adjustable, easy assembly and disassembly characteristics. According to the need to set the filter mesh, typically in the range: 18 ~ 30 mesh water, steam 40 ~ 100 mesh, oil 100 ~ 480 mesh.