Diaphragm Gas Pumps

KNF offers a large selection of diaphragm pumps for sampling, evacuating and compressing applications. All pump types are based on the same working principle of an oscillating diaphragm inside the pump head offering oil-free, uncontaminated and maintenance-free operation.

Model Flow rate at
atm. pressure
(mbar absolute)
(bar relative)
Temperature-resistant and heated pumps up to 100 down to 180 up to 1.5 up to 43.5
Micro pumps up to 12 down to 200 up to 1.5 up to 21.8
Vacuum pumps and compressors up to 130 down to 0.5 up to 7.0 up to 101.5
Chemically resistant pumps up to 60 down to 2.0 up to 1.5 up to 21.8
Explosion proof pumps up to 220 down to 53 up to 4.0 up to 58.0
Double diaphragm pumps up to 130 down to 4 up to 3.0 up to 43.5