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Fully automatic non-stop filtration with low dedusting loss

HETA Slot Type Filters are mainly used as product filters for the filtration of highly polluted liquids. Because of its mechanical dedusting system, this fully automatic non-stop filter is suitable for nearly all scopes of application and is characterised by a small deducting loss. Slot type filters are very reliable and durable, at the same time they only require a low maintenance effort.

Characteristics of the filter system

  • Robust construction
  • Filtration of solids from liquids
  • Design pressure up to 16 bar
  • Temperature range from -10 °C to +220 °C
  • Suitable for filter finenesses larger 25 µm
  • Construction with heating jacket or double casing possible. 


The filter vessel can be produced made of stainless steel or carbon steel.

Benefits of the filter system

  • Low backflushing rate
  • Suitable also for low flow rates
  • Non-stop filter operation
  • Very durable
  • Ex-protected construction of the system possible


  • Rotating slot type element with scrapers for self-cleaning

The slot type element can be supplied made of stainless steel, titanium, Hastelloy, Monel / Inconel or Super Duplex materials. Other material can be supplied upon request.


  • Differential pressure transmitter / manometer
  • Level indicator / sight glass
  • Quick acting closure
  • Cover lifting and swivelling device
  • Automatic vent
  • Safety vent valve
  • Shut-off unit (ball valve or butterfly valve)
  • Control (IPC / LOGO / SPS)
  • Proximity switch with timing disc
  • Three-phase motor