1950	The world's first electric barrel pump Type FLUX 300.
1953	The first explosion-proof barrel pump Type F 300 Ex, tested and certified by the Federal Bureau of Standards (PTB). Test Certificate No. PTB Nr. III B/E3134
1970	New explosion-proof motor Type F 410 Ex.
1976	All barrel pumps in stainless steel for use in hazardous areas are tested again for safety.
1984	All FLUX drive motors for use in hazardous areas are tested and certified according to European standards EN 50014.
1993	Liquid meters Type FMC are tested and certified according to European standards EN 50014.
1997	The world's first explosion-proof commutator motor Type F 460 Ex, which has been tested and certified according to ATEX-Directive 94/9/EC. EC-Type-Examination Certificate No. PTB 97 ATEX 1035.
2000	The complete FLUX range of barrel pumps and high viscosity liquid pumps in stainless steel are tested and certified according to ATEX-Directive 94/9/EC by the Federal Bureau of Standards (PTB).
2003	The world's first brushless barrel pump motor Type FBM 4000 Ex, explosion-proof to ATEX-Directive 94/9/EC. EC-Type-Examination Certificate No. PTB 03 ATEX 1042. Air-operated diaphragm pumps in conductive version are certified for use in hazardous areas.