Filter - Ag

Filter-Ag has many outstanding advantages over the more common granular filter medias used for suspended solids reduction. Its fractured edges and irregular surface provides a high surface are and complex flow path for efficient removal of suspended matter through out the filter bed, typically reducing suspended solids down to the 20-40 micron range. Filter-Ag's larger particle size creates less pressure loss through the filter and allows deeper sediment penetration into the bed for higher sediment loading and longer filter runs. This large and irregular shape prevents the screening and caking of sediment in the top several inches of the filter bed as happens in the typical sand filter, thus preventing a rapid buildup of headloss and binding problems. Filter-Ag's light weight means lower backwash rates and better bed expansion to release trapped sediment and rinse the filter media during the backwash cycle.
Although not intended to be an iron reduction media, extensive field experience has shown Filter-Ag's rough and jagged surface to be very good at entrapping the fragile iron flock that forms after dissolved iron has been oxidized. The jagged edges are apparently good flock collection points for the precipitated iron.

Advantages :

  • High service rates result in lower equipment costs
  • High sediment reduction capacity results in longer life runs
  • Light weight requires lower backwash rates than those required for other filter media
  • Less pressure loss through a bed of Filter-Ag that most other filter media

Standard Features

255/940 Control Valve
1 in. Distributor with Basket
Polyethylene-lined and Fiberglass-wound Mineral Tank
70 lbs Filter-Ag
¾ " copper tailpieces
¾ in bypass valve
½ in Drain Line
255/940 Service Manual
7 or 12 day timer

Autotrol® 940 Timer Control Specs

Autotrol® 960 Electronic Demand Control Specs