SRLF双筒回油管路过滤器是由两只单筒过滤器及二位六通换向阀组成，结构简单，使用方便，并带有旁通阀及滤芯污染堵塞发讯器，以达到保证系统安全的目的。
在工作过程中，单筒过滤器滤芯堵塞到一定程度需清洗或更换滤芯时，要停止主机工作来更换滤芯，这样不仅浪费时间更不能满足主机连续工作需要，双筒过滤器有效地解决了单筒过滤器这方面的缺陷，在不停机的情况下可清洗或更换滤芯来保证主机正常连续工作。
它的工作特点是当一只过滤器滤芯堵塞而需更换时，不必停止主机工作，只要打开压力平衡阀并转动换向阀，另一只过滤器即可参加工作，然后更换已堵塞的滤芯，需更换滤芯侧过滤筒，允许少量内泄漏。
本过滤器广泛应用于重型机械、矿山机械、冶金机械等液压系统。
SRLF系列双筒回油管路过滤器（新型）型号：
SRLF-60*1P
SFX-60*1P
SRLF.BH-60*1P
SFX.BH-60*1P
SRLF-100*1P
SFX-100*1P
SRLF.BH-100*1P
SFX.BH-100*1P
SRLF-160*1P
SFX-160*1P
SRLF.BH-160*1P
SFX.BH-160*1P
SRLF-240*1P
SFX-240*1P
SRLF.BH-240*1P
SFX.BH-240*1P
SRLF-330*1P
SFX-330*1P
SRLF.BH-330*1P
SFX.BH-330*1P
SRLF-500*1P
SFX-500*1P
SRLF.BH-500*1P
SFX.BH-500*1P
SRLF-660*1P
SFX-660*1P
SRLF.BH-660*1P
SFX.BH-660*1P
SRLF-850*1P
SFX-850*1P
SRLF.BH-850*1P
SFX.BH-850*1P
SRLF-950*1P
SFX-950*1P
SRLF.BH-950*1P
SFX.BH-950*1P
SRLF-1300*1P
SFX-1300*1P
SRLF.BH-1300*1P
SFX.BH-1300*1P
SRLF-60×1P
SFX-60×1P
SRLF.BH-60×1P
SFX.BH-60×1P
SRLF-100×1P
SFX-100×1P
SRLF.BH-100×1P
SFX.BH-100×1P
SRLF-160×1P
SFX-160×1P
SRLF.BH-160×1P
SFX.BH-160×1P
SRLF-240×1P
SFX-240×1P
SRLF.BH-240×1P
SFX.BH-240×1P
SRLF-330×1P
SFX-330×1P
SRLF.BH-330×1P
SFX.BH-330×1P
SRLF-500×1P
SFX-500×1P
SRLF.BH-500×1P
SFX.BH-500×1P
SRLF-660×1P
SFX-660×1P
SRLF.BH-660×1P
SFX.BH-660×1P
SRLF-850×1P
SFX-850×1P
SRLF.BH-850×1P
SFX.BH-850×1P
SRLF-950×1P
SFX-950×1P
SRLF.BH-950×1P
SFX.BH-950×1P
SRLF-1300×1P
SFX-1300×1P
SRLF.BH-1300×1P
SFX.BH-1300×1P
SRLF-60*3P
SFX-60*3P
SRLF.BH-60*3P
SFX.BH-60*3P
SRLF-100*3P
SFX-100*3P
SRLF.BH-100*3P
SFX.BH-100*3P
SRLF-160*3P
SFX-160*3P
SRLF.BH-160*3P
SFX.BH-160*3P
SRLF-240*3P
SFX-240*3P
SRLF.BH-240*3P
SFX.BH-240*3P
SRLF-330*3P
SFX-330*3P
SRLF.BH-330*3P
SFX.BH-330*3P
SRLF-500*3P
SFX-500*3P
SRLF.BH-500*3P
SFX.BH-500*3P
SRLF-660*3P
SFX-660*3P
SRLF.BH-660*3P
SFX.BH-660*3P
SRLF-850*3P
SFX-850*3P
SRLF.BH-850*3P
SFX.BH-850*3P
SRLF-950*3P
SFX-950*3P
SRLF.BH-950*3P
SFX.BH-950*3P
SRLF-1300*3P
SFX-1300*3P
SRLF.BH-1300*3P
SFX.BH-1300*3P
SRLF-60×3P
SFX-60×3P
SRLF.BH-60×3P
SFX.BH-60×3P
SRLF-100×3P
SFX-100×3P
SRLF.BH-100×3P
SFX.BH-100×3P
SRLF-160×3P
SFX-160×3P
SRLF.BH-160×3P
SFX.BH-160×3P
SRLF-240×3P
SFX-240×3P
SRLF.BH-240×3P
SFX.BH-240×3P
SRLF-330×3P
SFX-330×3P
SRLF.BH-330×3P
SFX.BH-330×3P
SRLF-500×3P
SFX-500×3P
SRLF.BH-500×3P
SFX.BH-500×3P
SRLF-660×3P
SFX-660×3P
SRLF.BH-660×3P
SFX.BH-660×3P
SRLF-850×3P
SFX-850×3P
SRLF.BH-850×3P
SFX.BH-850×3P
SRLF-950×3P
SFX-950×3P
SRLF.BH-950×3P
SFX.BH-950×3P
SRLF-1300×3P
SFX-1300×3P
SRLF.BH-1300×3P
SFX.BH-1300×3P
SRLF-60*5P
SFX-60*5P
SRLF.BH-60*5P
SFX.BH-60*5P
SRLF-100*5P
SFX-100*5P
SRLF.BH-100*5P
SFX.BH-100*5P
SRLF-160*5P
SFX-160*5P
SRLF.BH-160*5P
SFX.BH-160*5P
SRLF-240*5P
SFX-240*5P
SRLF.BH-240*5P
SFX.BH-240*5P
SRLF-330*5P
SFX-330*5P
SRLF.BH-330*5P
SFX.BH-330*5P
SRLF-500*5P
SFX-500*5P
SRLF.BH-500*5P
SFX.BH-500*5P
SRLF-660*5P
SFX-660*5P
SRLF.BH-660*5P
SFX.BH-660*5P
SRLF-850*5P
SFX-850*5P
SRLF.BH-850*5P
SFX.BH-850*5P
SRLF-950*5P
SFX-950*5P
SRLF.BH-950*5P
SFX.BH-950*5P
SRLF-1300*5P
SFX-1300*5P
SRLF.BH-1300*5P
SFX.BH-1300*5P
SRLF-60×5P
SFX-60×5P
SRLF.BH-60×5P
SFX.BH-60×5P
SRLF-100×5P
SFX-100×5P
SRLF.BH-100×5P
SFX.BH-100×5P
SRLF-160×5P
SFX-160×5P
SRLF.BH-160×5P
SFX.BH-160×5P
SRLF-240×5P
SFX-240×5P
SRLF.BH-240×5P
SFX.BH-240×5P
SRLF-330×5P
SFX-330×5P
SRLF.BH-330×5P
SFX.BH-330×5P
SRLF-500×5P
SFX-500×5P
SRLF.BH-500×5P
SFX.BH-500×5P
SRLF-660×5P
SFX-660×5P
SRLF.BH-660×5P
SFX.BH-660×5P
SRLF-850×5P
SFX-850×5P
SRLF.BH-850×5P
SFX.BH-850×5P
SRLF-950×5P
SFX-950×5P
SRLF.BH-950×5P
SFX.BH-950×5P
SRLF-1300×5P
SFX-1300×5P
SRLF.BH-1300×5P
SFX.BH-1300×5P
SRLF-60*10P
SFX-60*10P
SRLF.BH-60*10P
SFX.BH-60*10P
SRLF-100*10P
SFX-100*10P
SRLF.BH-100*10P
SFX.BH-100*10P
SRLF-160*10P
SFX-160*10P
SRLF.BH-160*10P
SFX.BH-160*10P
SRLF-240*10P
SFX-240*10P
SRLF.BH-240*10P
SFX.BH-240*10P
SRLF-330*10P
SFX-330*10P
SRLF.BH-330*10P
SFX.BH-330*10P
SRLF-500*10P
SFX-500*10P
SRLF.BH-500*10P
SFX.BH-500*10P
SRLF-660*10P
SFX-660*10P
SRLF.BH-660*10P
SFX.BH-660*10P
SRLF-850*10P
SFX-850*10P
SRLF.BH-850*10P
SFX.BH-850*10P
SRLF-950*10P
SFX-950*10P
SRLF.BH-950*10P
SFX.BH-950*10P
SRLF-1300*10P
SFX-1300*10P
SRLF.BH-1300*10P
SFX.BH-1300*10P
SRLF-60×10P
SFX-60×10P
SRLF.BH-60×10P
SFX.BH-60×10P
SRLF-100×10P
SFX-100×10P
SRLF.BH-100×10P
SFX.BH-100×10P
SRLF-160×10P
SFX-160×10P
SRLF.BH-160×10P
SFX.BH-160×10P
SRLF-240×10P
SFX-240×10P
SRLF.BH-240×10P
SFX.BH-240×10P
SRLF-330×10P
SFX-330×10P
SRLF.BH-330×10P
SFX.BH-330×10P
SRLF-500×10P
SFX-500×10P
SRLF.BH-500×10P
SFX.BH-500×10P
SRLF-660×10P
SFX-660×10P
SRLF.BH-660×10P
SFX.BH-660×10P
SRLF-850×10P
SFX-850×10P
SRLF.BH-850×10P
SFX.BH-850×10P
SRLF-950×10P
SFX-950×10P
SRLF.BH-950×10P
SFX.BH-950×10P
SRLF-1300×10P
SFX-1300×10P
SRLF.BH-1300×10P
SFX.BH-1300×10P
SRLF-60*20P
SFX-60*20P
SRLF.BH-60*20P
SFX.BH-60*20P
SRLF-100*20P
SFX-100*20P
SRLF.BH-100*20P
SFX.BH-100*20P
SRLF-160*20P
SFX-160*20P
SRLF.BH-160*20P
SFX.BH-160*20P
SRLF-240*20P
SFX-240*20P
SRLF.BH-240*20P
SFX.BH-240*20P
SRLF-330*20P
SFX-330*20P
SRLF.BH-330*20P
SFX.BH-330*20P
SRLF-500*20P
SFX-500*20P
SRLF.BH-500*20P
SFX.BH-500*20P
SRLF-660*20P
SFX-660*20P
SRLF.BH-660*20P
SFX.BH-660*20P
SRLF-850*20P
SFX-850*20P
SRLF.BH-850*20P
SFX.BH-850*20P
SRLF-950*20P
SFX-950*20P
SRLF.BH-950*20P
SFX.BH-950*20P
SRLF-1300*20P
SFX-1300*20P
SRLF.BH-1300*20P
SFX.BH-1300*20P
SRLF-60×20P
SFX-60×20P
SRLF.BH-60×20P
SFX.BH-60×20P
SRLF-100×20P
SFX-100×20P
SRLF.BH-100×20P
SFX.BH-100×20P
SRLF-160×20P
SFX-160×20P
SRLF.BH-160×20P
SFX.BH-160×20P
SRLF-240×20P
SFX-240×20P
SRLF.BH-240×20P
SFX.BH-240×20P
SRLF-330×20P
SFX-330×20P
SRLF.BH-330×20P
SFX.BH-330×20P
SRLF-500×20P
SFX-500×20P
SRLF.BH-500×20P
SFX.BH-500×20P
SRLF-660×20P
SFX-660×20P
SRLF.BH-660×20P
SFX.BH-660×20P
SRLF-850×20P
SFX-850×20P
SRLF.BH-850×20P
SFX.BH-850×20P
SRLF-950×20P
SFX-950×20P
SRLF.BH-950×20P
SFX.BH-950×20P
SRLF-1300×20P
SFX-1300×20P
SRLF.BH-1300×20P
SFX.BH-1300×20P
SRLF-60*30P
SFX-60*30P
SRLF.BH-60*30P
SFX.BH-60*30P
SRLF-100*30P
SFX-100*30P
SRLF.BH-100*30P
SFX.BH-100*30P
SRLF-160*30P
SFX-160*30P
SRLF.BH-160*30P
SFX.BH-160*30P
SRLF-240*30P
SFX-240*30P
SRLF.BH-240*30P
SFX.BH-240*30P
SRLF-330*30P
SFX-330*30P
SRLF.BH-330*30P
SFX.BH-330*30P
SRLF-500*30P
SFX-500*30P
SRLF.BH-500*30P
SFX.BH-500*30P
SRLF-660*30P
SFX-660*30P
SRLF.BH-660*30P
SFX.BH-660*30P
SRLF-850*30P
SFX-850*30P
SRLF.BH-850*30P
SFX.BH-850*30P
SRLF-950*30P
SFX-950*30P
SRLF.BH-950*30P
SFX.BH-950*30P
SRLF-1300*30P
SFX-1300*30P
SRLF.BH-1300*30P
SFX.BH-1300*30P
SRLF-60×30P
SFX-60×30P
SRLF.BH-60×30P
SFX.BH-60×30P
SRLF-100×30P
SFX-100×30P
SRLF.BH-100×30P
SFX.BH-100×30P
SRLF-160×30P
SFX-160×30P
SRLF.BH-160×30P
SFX.BH-160×30P
SRLF-240×30P
SFX-240×30P
SRLF.BH-240×30P
SFX.BH-240×30P
SRLF-330×30P
SFX-330×30P
SRLF.BH-330×30P
SFX.BH-330×30P
SRLF-500×30P
SFX-500×30P
SRLF.BH-500×30P
SFX.BH-500×30P
SRLF-660×30P
SFX-660×30P
SRLF.BH-660×30P
SFX.BH-660×30P
SRLF-850×30P
SFX-850×30P
SRLF.BH-850×30P
SFX.BH-850×30P
SRLF-950×30P
SFX-950×30P
SRLF.BH-950×30P
SFX.BH-950×30P
SRLF-1300×30P
SFX-1300×30P
SRLF.BH-1300×30P
SFX.BH-1300×30P
黎明滤芯