过滤器是输送介质的管网系统*的一种装置，通常安装在减压阀、泄压阀、定水位阀或其它设备的进口端，用来清除介质中的杂质，以保护阀门及设备的正常使用，该过滤器具有结构*阻力小，排污方便等特点。适用介质可为水、油气，一般通水网为 10-30 目，通气网为 40-100 目，通油网为 100-480 目，可按用户要求制造介质温度 0-425℃。

Filter is an indispensable device in pipe network system of transmission medium. It is usually installed in the entry end of reducing valve, decompression valve, level control valve or other devices to remove impurities of medium for protecting the normal use of valve and devices. This filter has features of advanced structure, small resistance and convenient draining. The available medium include water , oil and air, with water net for 10 to 30 mesh, ventilation net for 40 to 100 mesh and oil net for 400 to 480 mesh. The medium temperature can be made from 0 to 425℃ according to the user requirements.