Kest Magnetic Coupled Mixer - KM ATEX

Mixing volumes from 0,2 l - 22000 l.

The Kest Mixer is a bottom mounted magnetic coupled mixer. With its aseptic design, excellent mixing performance and ability to mix to the last drop it has become a popular choice for critical pharma and biotech applications where full product recovery is important.

The Kest Mixer KM ATEX range covers mixing volumes up to 22 000 liters. The Kest Mixer is designed for CIP/SIP applications in an ATEX environment.

Kest Mixer KM ATEX has a Zone 1 classification available for both Gas or Gas & Dust environments. Short down times is secured by features like our patented Kest-Lock Connection. Our revolution counter gives you secure control of your mixing process.

Kest has incorporated a lot of updates for the Kest KM ATEX mixer, mixing to the last drop is of course one of the features that impact the customers most since they can achieve full product recovery. What it really means is that you can continue to run the mixer when you are emptying the tank. For most sizes you can run it at 100 rpm, 15 minutes after that the liquid level has gone under the top of the mixing head, see table 1. Most competitors have a requirement that the mixing head always shall be covered with liquid in an ATEX application.

The Kest Mixer KM ATEX range can be customized to perfectly fit your needs.


Sizes up to 22,000 litres
Pressure range -1 to 10 bar
Temp. range 0°C to 150°C
Material -Mixerhead: 1.4435 (316L) and Silicone carbide (SiC)
-Bearing: Zirconium dioxide (ZrO2)
-Tankplate: 1.4435 (316L)
-Sealing EPDM or Silicone
Finishing SF1 on surfaces in product contact
Electrische specifications Depends on model type
Marking Head and Bearing is marked with ID No. Tank plate is marked with material grade and heat number
Certificates FDA, USP Class VI, 3.1, IP55, ATEX 2GD


  • Classified for zone 1 both inside and outside the tank, see data sheet for detailed classification.
  • Can be installed in both Gas and Dust environments, see data sheet for detailed classification.
  • The mixer can mix to the last drop, even when the liquid level is below the Mixing head.
  • An extra support for the drive unit is included as standard.

pdfDatasheet KEST Magnetic Coupled Mixer, KM ATEX
English - 1,67 MB - Ed. DS-000011 REV A