Filter series F-MI3

Compact filters for diverse applications

Filters are used in fluidic systems to protect sensitive components from damage due to contamination and particles. For the safe operation of micro annular gear pumps and their precision-machined rotors, the use of a 10 µm meshed filter is recommended. With compact filter units made out of corrosion-resistant materials, with high filtration performance and different mesh sizes, HNP Mikrosysteme offers suitable filter solutions for all of its pump series.

The filter series F-MI3 is available in three different configurations. The »inlet filter«, without an external housing, is directly immersed in the liquid. The »inline filters« are designed to be installed downstream in the feed line, i.e. directly before the pump. The maintenance-friendly »T-design« offers the advantage of changing the filter element without having to uninstall the filter from the feed line, and the option to open the bottom for releasing medium or emptying the filter. To avoid sedimentation and cross-contamination the filters have small dead volumes and are manufactured with smooth surfaces (Ra 0.8).


  • Corrosion-resistant materials
    stainless steel or alloy C22, FFPM
  • Metal filter elements
    without solder or adhesives
  • High filtration performance and small size
    pleated filter elements for low pressure drops even at high flow rates and viscosities
  • Wide configuration variety
    different body shapes and body materials, filter fineness and sealing materials
  • User-friendly and economical
    filter elements can be cleaned or replaced

Filter characteristics for filter fineness 10 µm

Inline filter F-MI3 (straight)

Inlet filter F-MI3

Inline filter F-MI3-T

Type Inlet filter, Inline filter (straight, T-shape)
Filter area 160 cm²
Filter fineness 10 µm; optional: 3 µm, 25 µm, 40 µm, 100 µm
Fluid connection conical internal thread 3/8" NPT
Measurements (ø x H) Inlet filter: Ø 35 x 84 mm
Straight shape: Ø 48 x 105 mm
T-shape: Ø 70 x 114 mm
Internal volume Inlet filter: -
Straight shape: 65 ml
T-shape: 92 ml
Materials stainless steel
Seal materials Inlet filter: -
Inline filter: FPM, FFPM, EPDM
Operating pressure Inlet filter: -
Inline filter: max. 200 bar
Differential pressure range Inlet filter: -
Inline filter: max. 10 bar
Operating temperature range Inlet filter: -200 ... +250 °C
Inline filter: -10 ... +140 °C (-40 ... +275 °C *)
Remark * depending on seal material
File Language Size
Quick guide inline filter F-MI3-T
Quick guide inline filter F-MI3-T (81 KB)
Kurzanleitung Inline-Filter F-MI3-T (81 KB)
81 KB
Drawing filter series F-MI3
Drawing filter series F-MI3 (115 KB)
Maßzeichnung Filterserie F-MI3 (113 KB)
115 KB
Product info filter series F-MI3
Product info filter series F-MI3 (76 KB)
Produktinformation Filterserie F-MI3 (77 KB)
Fiche produit filtre série F-MI3 (78 KB)
76 KB