INTRODUCTION

The SRFB series filter is composed of two single bowl filters and a 2-posit-ion 3-way directional valve, by-pass valve, indicator, diffuser. It is simple in s-tructure and easy to use. It can be installed on the top, at the side or in the bo-ttom of the tank; there is by-pass valve and contamination indicator in it, for protecting the hydraulic system safety. The feature of this filter allows conti-nuous operation even during replacing element, which is clogged by contami-nant. When the filter element is clogged by contaminant that results in the pr-essure reaching to 0.35Mpa, the indicatorwill give signals. At this time, turn the directional valve in order to make the other filter work then change the e-lement.

If the filter can's be changed in time that make the pressure reaches to 0.4Mpa, then the by-pass valve will open to keep the system safety. The filter has check valve, so when it was installed at the side or in the bottom of the tank a-nd change element, it won't let the oil flow out of the tank. The diffuser is inst-alled under the filter bowl, which makes the medium flow stably into the tank.The filter element is with high filtration accuracy, low initial pressure loss and high dirt-holding capacity. Filter ratioβ3、5、10、20＞200, filter effic-iency n≥99.5%,and fit the ISO standard.