泸州市液压附件厂根据一机部滤油器合设计组制定的 XU 型线隙式滤油器(吸油口用)技术资料,于1978年开始试制,现已完成了流量为16、25,40,63,100升/分,过滤精度为100微米的试制任务,1979年9月7～8日在泸州市召开了鉴定会。会议由四川省机械局委托泸州市工业 Luzhou City Hydraulic Accessories Factory started the trial production of the XU-type wire-gap oil filter (for oil suction port) based on the design of the oil filter unit of the First Engine Department. The flow rate was 16, 25, 40. , 63,100 liters / min, pre-production tasks with a filtration accuracy of 100 micrometers, and an appraisal meeting was held in Quzhou City from September 7 to 8, 1979. The meeting was entrusted by Sichuan Machinery Bureau to Chenzhou Industry