We have a client with a system on a VERY dirty feed. They have a 100 mesh spin down screen. I went up there and the screen was completely clogged. I cleaned it, and it was clogged again within 5 minutes. The water coming in is literally brown. Its silt and small organic material. The feed is from a ditch about 100' away and piped in 4" to a pump. I don't think installing a solenoid valve on the filter purge will be enough, as it took me literally scrubbing the screen to get it clean. I'm wondering if there is a silt seperation system I could use with a regular spindown that wouldn't need daily maintenance?