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Slot tube calculator

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As Belgians, we take our beer seriously. With over 30 years of experience Trislot knows the ins and outs of the beer industry. Our slot tubes and wedge wire screens are used in multiple steps of the beer brewing process such as malting, lautering, hop infusion and of course, filtration itself.

precoat candle filters

Precoat candle filters

Trislot is the market leader in supplying slot tubes for pre-coat candle filters.

Technical details

  • Outside Diam. : 25 – 33 mm
  • Slot : 0.03-0.07 mm
  • Open area : 3-6.5%


  • High slot consistency
  • Perfect roundness
  • Strong construction – rigidity

lautertun screen

Lauter tun screens

A case study with a false bottom of diam 2100 mm showed that the water consumption could be reduced significantly, and the filtration time was reduced by 1.5 hours compared to a false bottom of milled plate.

Technical details

  • For smaller tuns : rectangular segments, for larger diameters : pie shaped segments
  • Slot openings : 0.5-0.75 mm
  • Open area : 20-30%
  • Material : mainly 304, in some cases 316L


  • High open area, reducing filtration time
  • Good cleanability, reducing water consumption
  • Self supporting
  • Custom-made
  • Perfectly flat screens