Process Pumps

KNF designs and manufactures diaphragm pumps for sampling, transferring, evacuating and compressing process media for many industrial applications. Our oil-free diaphragm pumps meet discerning engineer's requirements for robust and contamination-free performance under the most challenging and corrosive conditions. Additionally, our modular system allows us to custom-design pumps to meet your specific application requirements.

Featured Video: KNF Process Media Pumps for Industrial Applications

ATEX Compliant Pumps

ATEX pumps are designed to prevent internal or external explosions by enclosing parts that could ignite. KNF ATEX-compliant pumps are certified in accordance with the 94/9/EC directive on equipment and protective systems.
View guidelines on the application of directive 94/9/EC

Equipment for Explosive Atmospheres (ATEX) - European Commission references standards on equipment and protective systems intended for use in potentially explosive atmospheres.
Learn more about ATEX

Model Flow rate at
atm. pressure
(L/min)
Vacuum
(mbar absolute)
Pressure
(bar relative)
Pressure
(psig)
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N 87 TTE Ex - 50/60Hz 7.5 140 1.5 21.8
N 026... .9 E Ex - 50Hz 15 100 2.5 36.3
N 922 FTE Ex - 50Hz 16 200 up to 1.5 up to 21.8
N 922 FT.29 E Ex - 50Hz up to 16 200 up to 1.5 up to 21.8
N 922 FTE Ex - 60Hz 18 200 up to 1.5 up to 21.8
N 922 FT.29 E Ex - 60Hz up to 18 200 up to 1.5 up to 21.8
N 026.1.2... .9 E Ex - 50Hz 26 100 2 29.0
N 630 ST.9 E Ex – 50Hz 30 120 4 58.0
N 630 ST.9 E Ex - 60Hz 35 120 4 58.0
N 630.15 ST.9 E Ex – 50Hz 30 70 9 131.0
N 630.15 ST.9 E Ex - 60Hz 35 70 9 131.0
N 630.3 ST.9 E Ex – 50Hz 30 25 0.5 7.3
N 630.3 ST.9 E Ex - 60Hz 35 25 0.5 7.3
N 630.1.2 ST.9 E Ex - 50Hz 58 120 4 58.0
N 630.1.2 ST.9 E Ex - 60Hz 68 120 4 58.0
N 0150 ST.9 E Ex - 50Hz 100 130 1 14.5
N 0150.3 ST.9 E Ex - 50Hz 100 30 0.5 7.3
N 0150.1.2 ST.9 E Ex - 50Hz 200 130 1 14.5