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rfx roughing filter

RF/x roughing filter capable of 1.5 gpm.
For the SSF/x slow sand filters.
roughing filter

The RF-1 roughing filter (on right) produces up to 7 gpm for pretreatment of slow sand filters up to the SSF-6.

  • Removes sand and silt (settleable solids)
  • Removes to 90% turbidity (cloudiness)
  • Pre-treatment for slow sand filters

Roughing filters are used primarily as pretreatment for filter systems that may not be able to tolerate high turbidity or suspended solids in the source water.

The RF/x and RF-1 are upflow course media filters that produces up to 7 gallons per minute, or 10,080 gallons per day, and are appropriate for use with either an SSF/x through SSF-6  slow sand filters. The upflow feature allows for maximum removal efficiency coupled with simple maintenence. By opening the downwash valves, flow through the filter is reversed at a high rate, cleaning the filter by flushing filtered particles out. This system allows for years of use of the filter without gravel replacement.


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