The RFB series double barrel direct Return Oil Filter (the new type replaces the SPZU series filter) is composed of two single barrel filters, reversing valve, bypass valve, transmitter, diffuser, etc.
It is installed on the top, side or bottom of the tank, can be replaced in the system without stopping the filter element, suitable for continuous work of the hydraulic system oil fine filtration, used to filter the hydraulic system components wear metal powder and seal rubber impurities, so that the flow of oil back to the tank to keep clean, in order to facilitate the system of oil circulation.
When the filter element of a filter is blocked and the inlet and outlet pressure difference is 0.35MPa, the transmitter sends a signal. At this time, the reversing valve is turned to make the standby Oil Filter work, and then the blocked filter element is replaced. When the blocked filter element cannot be replaced in time for some reason, so that the pressure difference between the import and export further rises to 0.4MPa, the bypass valve automatically starts to work, so as to protect the filter element and the system to work normally, but the user should replace the filter element as soon as possible. Because there is no check valve, when the filter is placed on the side and bottom of the tank, the oil will not flow out of the tank when changing the filter element. The diffuser is arranged at the bottom of the oil return cylinder, which can make the medium of the oil return flow smoothly into the tank, which is not easy to produce bubbles, reduce the re-entry of air, and weaken the disturbance of the deposited pollutants.
