In many industries, environmental engineering and research, high-performance, durable and reliable diaphragm vacuum pumps are widely sought whether for evacuating, transferring or compressing functions. The N 922 pump series from KNF fits the bill. This pump series is available with stainless steel or modified PTFE pump heads, making it suitable for a wide range of applications.

Features & Benefits

What makes each version of the N 922 gas pump series stand out and how they differ from each other? Here are the advantages:

PTFE Pump Head

PTFE Pump Head, integrated Bypass Valve

Stainless Steel Pump Head, Protection Class IP 20

Stainless Steel Pump Head, Protection Class IP 54

  • High chemical resistance
  • Robust design
  • Easy to sercive – wearing parts are inexpensively to replace
  • Maintenance work can be easily carried out even on assembled analytical systems
  • Durable even with difficult operating conditions
PTFE Pump Head
  • High chemical resistance
  • Robust design
  • Easy to sercive – wearing parts are inexpensively to replace
  • Maintenance work can be easily carried out even on assembled analytical systems
  • Durable even with difficult operating conditions
PTFE Pump Head, integrated Bypass Valve
  • High operating pressure of max. 6 bar rel.
  • High level of gas tightness: 6 x 10-3 mbar x l/s according to type examination
  • Base plate enables simple and quick assembly
  • Versatile in a broad pressure and vacuum range
  • Can be used for media and ambient temperatures of up to +60 °C
Stainless Steel Pump Head, Protection Class IP 20
  • High operating pressure of max. 6 bar rel.
  • High level of gas tightness: 6 x 10-3 mbar x l/s according to type examination
  • Dynamically adjustable to the customers' system by using the three-phase motor in combination with a frequency converter 
  • Can be used for media and ambient temperatures of up to +60 °C
  • Compressor housing can be turned in 90° intervals as required
Stainless Steel Pump Head, Protection Class IP 54

Easy to service

Owing to the long service life of stationary emission measurement systems, the ease of servicing built-in components is an important feature. The N 922 gas pump series fulfills this need in every regard. The only parts which have to be replaced are the diaphragm and valves. This task must be performed once a year depending on how the pump is used. Maintenance work can be easily carried out even on assembled analytical systems using standard tools. Thanks to its robust design, there is no need to remove the pump series for servicing, thus ensuring that the measurement technology remains ready for operation even under extreme conditions. Few replacement parts, long periods between required maintenance work and low costs for spare parts all add up to pleasingly low operating costs.

 

The compressor housing of the N 922 gas pump series can be moved in increments of 90 degrees separately from the motor in order to be positioned as required for condensate discharge.

How to Maintenance and to How to Turn the Compressor Housing

How to service the N 922 gas pump series with PTFE pump head
Condensate discharge by turning the compressor housing in 90 degree steps
Show More

The Right Fit for Your Need

The N 922 is available in four variants: either with an modified PTFE head or stainless steel head and with or without an integrated bypass valve, as with proctection class IP 20 or IP 54.

 

Familiarize yourself with the technical details of our N 922 gas pump series:

PTFE Pump Head

PTFE Pump Head, integrated Bypass Valve

Stainless Steel Pump Head, Protection Class IP 20

Stainless Steel Pump Head, Proctection Class IP 54

­­Flow Rate (max.): 18 l/min

Operating Pressure (max.): 1.5 bar (rel.)

Ultimate Vacuum (max.): 200 mbar (abs.)

Get all technical details here
PTFE Pump Head

Flow Rate (max.): 18 l/min

Operating Pressure (max.): 1.5 bar (rel.)

Ultimate Vacuum (max.): 200 mbar (abs.)

Get all technical details here
PTFE Pump Head, integrated Bypass Valve

Flow Rate (max.): 25 l/min

Operating Pressure (max.): 6 bar (rel.)

Ultimate Vacuum (max.): 110 mbar (abs.)

Get all technical details here
Stainless Steel Pump Head, Protection Class IP 20

Flow Rate (max.): 25 l/min

Operating Pressure (max.): 6 bar (rel.)

Ultimate Vacuum (max.): 110 mbar (abs.)

Get all technical details here
Stainless Steel Pump Head, Proctection Class IP 54

Modular System Options

Every application is different and some are one of a kind. By selecting and combining a variety of options, ranging from the material used to make the pump components that come into contact with the media, to the drive and the mechanical elements such as the circuit point and connections, it is easy to tailor every series model to meet application-specific requirements. 

The following pump parts of the N 922 gas pump series can be customized by our modular system: 

Pump head
Diaphragm
Valves
Motor
Pump head
▪  Modified PTFE
▪  Stainless steel
Diaphragm
▪  PTFE-coated­
▪  EPDM
Valves
▪  FFPM
▪  Stainless steel­
Motor
▪  Capacitor motor with 230 V, 50 Hz
▪  Capacitor motor with 100 V, 50/60 Hz
▪  Capacitor motor with 115 V, 60 Hz
▪  Capacitor motor with 220 V, 60 HZ
▪  Three-phase motor with 230/400 V, 50/60 Hz

Tell Me What Your Needs Are!

If you would like to know which of our N 922 gas pumps is the right pump for your needs or if you would like a live demo, please do not hesitate to contact me.

Adrian Blatter
Area Sales Manager Direct Export

Adrian Blatter

Phone
+49 7664/5909 663

Email
adrian.blatter@knf.com

 

LinkedIn Profile

Follow us on LinkedIn!

Join our community and get automatically updated with exciting news and stories about our products and company.
Let's connect!

KNF Tailored Solutions