VF -AC Filter Controller


General Information

VAF's Model VF -AC electronic filter controller offers simplicity with all the features necessary to fully monitor and control the operation of self-cleaning screen, sand and media filter systems. This controller allows flush cycles to be initiated by:

  • Manual,
  • Periodic (time between flushes) and/or
  • Pressure differential across the filter

VF -AC Specifications

  • NEMA/EEMAC type 4, 4x, 12 and 13, molded fiberglass polyester with GE Lexan Margard window.  Quick release latches, lockable cover 
    **Other enclosures available upon request.
Electrical Input
  • 115 VAC
  • 230 VAC
  • 12 VDC (battery/solar) used with 12 VDC 2-wire latching solenoids
Electrical Output
  • 24 VAC
  • 12 VDC continuous solenoids
  • 12 VDC pulse, 2 -wire latching solenoids
  • LCD indicating flush count, last flush interval, operating mode, alarm
  • Flush duration, dwell time (pause between sequential flushes), flush interval (maximum time between flushes), reset, manual flush, circuit breaker, power on/off
Alarm Output
  • 24 VAC, 1 amp with AC input
  • 12 VDC, 1 amp with DC input
Filter Capacity
  • Up to 4, 8 or 12 filters plus master valve


Up to 4, 8 or 12 parallel filters may be connected to the VF -AC controller. Multiple filters flush sequentially when a flush cycle is initiated. The controller then checks to be sure the pressure differential has dropped to zero, indicating the filtering medium has been cleaned. If a preset limit (adjustable from 1 to 7) of simultaneous flush cycles occur, the VF -AC will send an alarm signal. Upon power failure, the VF -AC will continue without data loss.


  • VF -AC Controller Flyer
  •   VF -AC Controller Flyer Spanish