ELEKTRISCH ANSTEUERBARES DRUCKBEGRENZUNGSVENTIL MIT HYDRAULISCHER FEDERVORSPANNUNG

摘要

The invention relates to pressure relief valves which spring bias is controlled by a proportional magnet. The force applied by the proportional magnet is increased by an additional hydraulic pressure force which acts on the spring. There is the advantage of decreasing the size of the proportional magnet and/or increasing the flow capacity of the valve.