Flow rate (at atm. pressure)
Upgraded with Stainless-Steel Pump Heads
Offering a 40% increase in flow rate compared to its predecessors, KNF N 922 ST is the latest expansion to its series. Equipped with the new stainless-steel pump heads, this robust, highly gas-tight vacuum pump is now suitable for a broader spectrum of applications.
Maintenance without Disassembly
Easy servicing remains the first priority while developing the N 922 ST series. Few replacement parts, long maintenance intervals, and low inspection costs make the N922 ST ideal for use in gas sampling and emission monitoring instruments.
Depending on the application, the maintenance only needs to be performed once a year. Thanks to the durable design, the whole process can be carried out using a standard tool.
|IP 20||Single-phase AC||From 100 – 120 V at 50/60 Hz|
to 200 – 240 V at 50/60 Hz
|Comes with a mounting plate with a flexible bore pattern|
|IP 54||Single-phase AC with a terminal box||100 – 120 V at 50/60 Hz230 V|
at 50 Hz220 V at 60 Hz
|IP 54||Three phase AC||230/400 V at 50/60 Hz||Condensate optimization*|
Dynamically adjustable performance**
* For optimal condensate, the compressor housing in IP 54 models can be repositioned in increments of 90° separately from the motor.
** IP 54 models with a three-phase AC motor can be operated with a frequency converter, making the pump performance dynamically adjustable according to specific requirements.
See also KNF N 922 STE Ex for explsion-proof models. For any question, please contact us.
Flow rate l/min at atm. pressure 25 Ultimate vacuum mbar abs. 110 Operating pressure bar g 6 Permissible media temperature °C 0° to +60°C Permissible ambient temperature °C +5° to +60°C; 0° if frost-free (non-condensing) Motor protection IP 54 / IP 20
- Pump head: stainless steel
- Diaphragm: PTFE-coated/EPDM
- Valves: stainless steel