The proportional electromagnet for mining sealed hydraulic valve is to seal the part of the electromagnet that may produce arc, spark or high temperature to ignite the explosive mixture in the sealing agent to avoid the contact between electrical components and the explosive mixture, so that the electromagnet can not ignite the surrounding explosive mixture under normal operation or approved overload and fault conditions. The proportional electromagnet for the pouring and sealing hydraulic valve is controlled by DC power supply. It is used in haWe proportional multi-way directional valve. Exmb Ⅰ MB is used in coal mine environment and exmb Ⅱ ct4gb is used in petrochemical environment。