This Krieger MMU 50 is a used mixer and blender — sometimes referred to as a mixing vessel or process mixer — built in 1995 and currently located in France. Machines of this type are used across the pharmaceutical, cosmetic, chemical, and food processing industries for the controlled blending, emulsifying, and homogenising of liquid and semi-liquid products. Krieger is a recognised manufacturer of industrial mixing and processing equipment, known for building high-specification vessels suited to demanding production environments.
The unit offers a useful working capacity of 50 litres, with a total tank volume to the rim of 80 litres. The vessel is equipped with three distinct agitation systems, giving operators considerable flexibility in processing different product types and viscosities: an outer arm mixer operating at variable speeds between 11 and 44 rpm, an inner arm mixer running between 21 and 84 rpm, and a high-speed homogeniser with a variable speed range of 1,150 to 4,350 rpm. All motors feature variable speed control.
The tank is a fixed, non-mobile vessel constructed from stainless steel grade 1.4435, a low-carbon austenitic alloy commonly specified for pharmaceutical and cosmetic applications due to its corrosion resistance and suitability for cleaning-in-place processes. The tank operates under a service pressure range of -1 to +2.0 bar and can withstand a maximum product temperature of 125 °C, making it suitable for processes requiring vacuum, pressure, or elevated heat.
The vessel is fitted with a double jacket with a volume of 13 litres, used for heating or cooling the product via a circulating fluid. The jacket operates at a maximum service pressure of 4.0 bar and a maximum temperature of 140 °C, enabling precise thermal control throughout the mixing cycle. The lid has a diameter of 119 mm. The machine has a total weight of 1,350 kg.
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