The autoclave sterilizes on the basis of the →pre-vacuum method combined with the fractionated flow method. A piston pump used to create the vacuum combines the advantages of great efficacy with extreme robustness in continuous operation. Thus the autoclave can be immediately put into operation without additional installation work, apart from providing the necessary power supply. For the optional connection of the one-way drain and an external water treatment unit please follow the water main and general information for the proper installation which must be observed when setting up the device.