Application fields
- Agriculture
- Automotive
- Chemical industry
- Climate control
- Environmental / analysis
- Food industry
- Fuel cells
- Inkjet / Reprographics
- Medical
- Security
- Semi-conductor industry
- Vacuum technology
Applications in the Laboratory
- Centrifugal concentration
- Degassing
- Desiccation
- Filtration
- Fluid aspiration
- Gel drying
- Liquid dosing
- Liquid metering
- Liquid transfer
- Rotary evaporation
- Solid phase extraction
- Vacuum ovens
Diaphragm Gas Pumps and Compressors
Sampling, evacuating and compressing – for tasks like these, KNF offers a wide range of diaphragm pumps and model variants. All the pump types offer media transfer without contamination and are maintenance-free.
Model | Flow rate at atm. pressure (l/min) |
Vacuum (mbar absolute) |
Pressure (bar g) |
|
---|---|---|---|---|
Explosion proof pumps | up to 220 | down to 53 | up to 4.0 | |
Temperature-resistant and heated pumps | up to 100 | down to 180 | up to 1.5 | |
Chemically resistant pumps | up to 60 | down to 2.0 | up to 1.5 | |
Double diaphragm pumps | up to 280 | down to 4 | up to 3.0 |
Explosion proof pumps
Explosion-proof pumps are designed to prevent internal or external explosions by enclosing parts that could ignite either the transfer media or the surrounding atmosphere. KNF supplies a range of explosion-proof pumps for use in potentially explosive atmospheres. All our pumps are ATEX-compliant and certified in accordance with the 94/9/EC directive on equipment and protective systems.
Flow rate at atm. pressure (l/min) |
Vacuum (mbar absolute) |
Pressure (bar g) |
Model | Download PDF |
---|---|---|---|---|
7.5 | 140 | 1.5 | N 87 TTE Ex | |
13 | 53 | 1.5 | N 726 FTE Ex | |
from 7 to 13 | 125 | 1.5 | N 726 FT.29 E Ex | |
15 | 100 | 2.5 | N 026... .9 E Ex | |
26 | 100 | 2 | N 026.1.2... .9 E Ex | |
27 | 100 | 4 | N 143... .9 E Ex | |
48 | 100 | 4 | N 186.1.2... .9 E Ex | |
120 | 115 | 1 | N 0150... .9 E Ex | |
220 | 115 | 1 | N 0150.1.2... .9 E Ex |
|
Temperature-resistant and heated pumps
Temperature-resistant pumps can transfer air as well as neutral or aggressive gases at temperatures up to 240 °C. In order to prevent condensation of the measuring gas, the heated head pump types possess temperature-resistant pump head components and optional thermostatic or electronic temperature control.
Flow rate at atm. pressure (l/min) |
Vacuum (mbar absolute) |
Pressure (bar g) |
Model | Download PDF |
---|---|---|---|---|
Temperature resistant pumps | ||||
6 | 290 | 1.5 | N 86... .16 E | |
10.5 | 240 | 1.5 | N 012... .16 E | |
18 | 200 | 1.5 | N 024... .16 E | |
30 | 200 | 1.5 | N 036... .16 E | |
30 | 200 | 1.5 | N 036.0... .16 E | |
100 | 180 | 1.5 | N 0100... .16 E | |
Heated pumps with thermostatically temperature limit stop | ||||
10.5 | 240 | 1.5 | N 012 ST.11 E | |
18 | 200 | 1.5 | N 024 ST.11 E | |
30 | 200 | 1.5 | N 036 ST.11 E | |
30 | 200 | 1.5 | N 036.0 ST.11 E | |
100 | 180 | 1.5 | N 0100 ST.11 E | |
Heated pumps with electronic control | ||||
10.5 | 240 | 1.5 | N 012 ST.26 E | |
18 | 200 | 1.5 | N 024 ST.26 E | |
30 | 200 | 1.5 | N 036 ST.26 E | |
30 | 200 | 1.5 | N 036.0 ST.26 E | |
100 | 180 | 1.5 | N 0100 ST.26 E |
Double diaphragm pumps
KNF double diaphragm pumps offer a high level of performance and greatly enhance safety, especially when working with dangerous, rare and valuable gases. A second diaphragm is located underneath the working diaphragm. The safety diaphragm has a significantly longer service life than the working diaphragm, thus ensuring that no gas can escape into the environment even if the working diaphragm ruptures.
Flow rate at atm. pressure (l/min) |
Vacuum (mbar absolute) |
Pressure (bar g) |
Model | Download PDF |
---|---|---|---|---|
4.5 | 250 | 1 | N 86 AN.12 DCB | |
11 | 250 | 0.6 | N 816 AV.12 DCB | |
25 | 200 | 0.6 | N 838 AN.12 DCB | |
30 | 100 | 3 | N 143... .12 E | |
30 | 3 | - | N 186.3... .12 E | |
50 | 100 | 3 | N 186.1.2... .12 E | |
150 | 100 | 2 | N 0150 AN.12 E | |
150 | 20 | - | N 0150.3 AN.12 E | |
280 | 100 | 2 | N 0150.1.2 AN.12 E |
|