Ski Tech Automatic Self-Cleaning Strainers provide continuous debris removal from snowmaking systems that demand full time uninterrupted flow. Further increase snowmaking efficiency by taking the manual cleaning element out of your snowmaking operation. Provide protection to pumps, oil coolers, after coolers and other pieces of snowmaking equipment by removing organic debris and other troublesome solids Ski Tech Automatic Self-Cleaning Strainers are available in pipe sizes ranging from 1" to 48" flanged. The strainers can operate through a wide range of operating pressure (5 psig minimum) and can be fabricated to fit in your application. The strainer houses a unique reverse rolled wedge wire straining element that is extremely rugged and clog resistant. Solids are backwashed out of the strainer automatically either on a preset timer interval or on high differential pressure to supply your snowmaking operation with a continuous, uninterrupted source of clean, debris free water.

1. Debris laden fluid enters through inlet to the inner chamber. 2. Dirty fluid flows upward and through the strainer element (A). 3. Debris is retained on the inside of the strainer element while the water continues to the outer chamber and exits through the strainer outlet. 4. During the backwash cleaning cycle, the motor/ gear reducer (B) drives the hollow backwash arm shaft (C) and hollow port (D) around the inside of the strainer element. 5. The backwash assembly (C), (D) and (E) are opened to atmospheric pressure by opening the backwash valve located at (G). 6. In applications where the line pressures are less than 5 psig, an external source of high pressure water is supplied by a control valve connected the spray nozzles (1) at the leading edge (F) of the backwash assembly.

7. A "Jet" spray action occurs at the inside of straining element along with a reversal of flow at the port/strainer element interface. 8. Debris is removed from the full length of the straining element, fluid then flows into the hollow port; down the hollow drive shaft and out the backwash outlet (G). 9. The hollow port continues to sweep the strainer element until the cleaning cycle has been completed. 10. The strainer will provide continuous uninterrupted flow during the backwashing operation. 11. The backwashing cycle can be set for continuous or intermittent backwashing.