Flow rate (at atm. pressure)

Up to





mbar abs.



bar g

KNF N 936.3 Autocalve Pump
Diaphragm Gas Pump for Class B Autoclaves

Many indications in hospitals and in emergency medicine require both a reliable adjustable suction output and a specific vacuum performance. A diaphragm gas pump is a key component of medical devices used in such situations.

The new KNF N 936.3 impresses with its steadily high flow rates, especially at pressures of below 500 mbar abs. The .3 version comes with two pump heads and two stages in series.

Fast Condensate Removal

The pump head components are designed so that accumulating condensate does not impair the operation. And the diaphragm material is highly resistant to the substances found in oils used to maintain medical instruments being sterilized. Therefore, N 936.3 is able to efficiently discharge condensate and prevents corrosion from developing.

Easy Integration

Two multiple voltage motors cover all voltages used around the world, thereby significantly reducing the number of variants and the corresponding effort required on the part of the autoclave manufacturer.

Thanks to its small size and the universal connection scheme, the pump can be integrated without requiring changes to existing designs.

Performance and Motor Data
TypeN 936.3 ANE, 50 HzN 936.3 ANE, 60 Hz
Delivery at atm. pressure* l/min36 ±10%39 ±10%
Max. pressure bar g0.50.5
Ultimate vacuum mbar abs.3535
Protection classIP 00IP 00
Voltage V200–240100–120
Frequencies Hz50/6050/60
Power P1 W190190
Imax A, 50/60 Hz1.3/1.02.3/1.8

* Liter at STP

Please see KNF N 936.1.2 for model with parallel connections both sides.

To suit your unique requirements, KNF N 936.3 can be further customized on a project basis. Please contact us to learn more.

    • Specially developed for sterilisation and drying processes
    • Optimal flow characteristics for fast drying
    • Condensate-repellent surfaces in the flow area
    • Compact and powerful
    • Vacuum down to 35 mbar abs.
    • Maintenance free
    • Can operate in any installed position
    • Uncontaminated flow due to oil-free operation
    • Pump head: Aluminum
    • Diaphragm: HNBR/Stainless steel
    • Valves: HNBR

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