Ydac filter 1300r005bn/hc is installed in the oil passage of the hydraulic system so that the passage to keep clean, to prolong the life of the hydraulic system used to remove worn metal powder of each element of the hydraulic system and other mechanical impurities. The low pressure also has a series filter bypass valve, when the filter is not timely replacement, bypass valve will open automatically, to ensure the normal operation of the system. This series is a substitute of similar products in the united states, germany, britain, italy and other countries.