Autovap / Rotovap:

The Steam Water Spray Retort

  • Proven retort concept - a system with minimal energy consumption
  • Designed for new packaging - flexibility in pasteurisation and sterilisation
  • Product quality - process fidelity, short cycle times


Longer shelf life with the Steam Water Spray Process

If steam and water consumption have highest priority and the container material is suitable for direct contact with oxigen in the heating phase, the steam-spray process is the optimal solution.


Directly injected steam blends with fine droplets of the water spray and results in an extremely homogenous heat transfer environment throughout the whole autoclave. As water jets spray into the cages from the sides as well, even and rapid cooling, also of comparatively flat containers, is safely achieved.

  • Quick heating, uniform heat distribution, rapid and even cooling
  • Low electricity, steam and water consumption
  • Safe counterpressure control during all process phases
  • Optimal operation also with part loads
  • Assured process fidelity
  • Suitable for different types and sizes of cages
Zeichnung Dampfsprüh-Klave


Forced convection due to rotary operation accelerates the heat transfer to the coldest spot in the containers, even with products of higher viscosity.

Short process times preserve natural quality, vitamins and nutritional values.

Agitation of the product during heating prevents burning on the container walls.

Dampfsprüh Rotation

Procedure animation

Variants for all requirements

Various as our customer´s requirements regarding capacity and sterilisation process - our range of steam spray retorts: from the 1-cage autoclave for small batches of high quality "delicatessen" up to large capacity retorts for vegetable products in pouches.

Type, Diameter Cages/gross volume litre
Rotovap DRX 1300 2/730 3/1095 4/1460  
Rotovap DRX 1500 2/1020 3/1530 4/2040  
Autovap DAX 1100 1/365 2/730 3/1095 4/1460
Autovap DAX 1400 2/1550 3/2325 4/3100 5/3875

Economic and clean

Especially pasteurised products require a fast cooling to low temperatures. The use of a heat exchanger for indirect cooling connected to 2 cooling media (first cooling phase with water from the mains, second with chilled water) ideally meets this requirement.

Rotovap 1300

In addition the use of heat exchangers significantly simplifies the incorporation of the retorts into energy and water recovery systems: Indirect cooling = multiple use of cooling water, cooling in a sterile environment

Heat exchanger

High performing, flexible and economic: Automated Batch Retort Systems

Manual loading and unloading of large capacity retorts requires great physical exertion. In this regard automatic handling systems from dft technology offer a substantial contribution of facilitation. A wide range, from manually operated packing supports to semi-automatic and fully automatic batch retort handling systems provides adequate solutions for any requirement. Simplification of work flow with guaranteed flexibility!

First-class references around the globe rely on dft technology's proven workmanship and employ our cage loading and unloading equipment in different degrees of automation up to fully automated batch retort systems in their daily production.

Sterilisation line
Work processes

Please contact us!

dft technology GmbH
Postfach 2611
D-24516 Neumünster

+49(0)4321 188-0
+49(0)4321 188-205

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