KNF Micro Diaphragm Pump PM22997-NMP850 VideoJetKNF Micro Diaphragm Pump PM22997 NMP850 (VideoJet) The KNF PM22997 NMP850 is a micro diaphragm pump engineered for precise gas and air handling in compact systems. Designed with KNFs reliable diaphragm technology, it delivers oil free, maintenance free performance with consistent flow and pressure stability. Frequently integrated into VideoJet systems, it ensures dependable operation in printing, medical, and analytical equipment. Key Specifications