BOXER® A – the automatic backwash filter

The automatic backwash filter BOXER® A protects domestic water installations (DIN EN 806-2). It is extremely user-friendly. The automatic controller triggers the flushing process by means of timer control at an interval of between 7 and 90 days. The power for the automatic controller is supplied by a conventional 9-volt block battery, the capacity monitoring feature of which is signalled on an LED display. The flow-optimised filter is made of high-strength, high-grade technical plastic, and the filter fineness is 100 µm. The 12-part date indicator reminds you to replace the filter (DIN EN 806-5). Installation in horizontal or vertical pipes is possible. Fast conversion to a fine filter BOXER® K or backwash filter BOXER® R is possible.

  • Nominal connection diameter from 3/4" to 1 1/4"
  • Max. water temperature 30°C
  • Nominal pressure PN 16 bar
  • Filter fineness 0.1 mm (100 μm)
  • Voltage supply 9-V block battery
  • DVGW-certified

Installation requirements

Please note local installation directives, general guidelines and technical specifications. The installation site must be frost-proof and the filter protected against chemicals, dyes, solvents, vapours and direct sunlight.

Scope of supply

BOXER® A complete with

  • Filter element (filter fabric made of stainless steel)
  • Connection flange, water meter screw connection
  • Drain connection, connection material
  • 9V battery


  • Filter differential pressure monitoring
  • Insert with non-return valve 1"
  • Set for conversion to another model in the BOXER® series

For information on inserts for replacement of an older Grünbeck filter with a BOXER® and technical details, see the product data sheet, which is available to download.