Slide valves are an alternative to MPV Valves and mount on the side of DE or sand filters. Slide valves have two functions - filter or backwash. Slide vales are simpler then MPV valves, have less parts, offer higher flow rates, and less restrictions.
Slide Valve Modes
Filter
Filter is the normal setting for the water to flow through the DE or sand.
Backwash
You pull the slide valve up to backwash the filter and flow the dirt and pool water through the waste line.
Troubleshooting
Sticking slider - how to free it up.
