STELZER – History since 1946

1946
Erwin STELZER Rührtechnik was established as a family-owned enterprise
1985
Takeover by Westfalia Separator AG
Establishment of STELZER Rührtechnik GmbH1989
Development of new agitator type series for industrial applications
1994
Member of the GEA Group, Special Product Division
1998
Takeover by Vaahto Group Plc., Finland
Establishment of STELZER Rührtechnik International GmbH2003
Development of biogas agitators with volumes up to 12.000 m³
2008
Customer-specific development of a “blowers” based on the “hermet” magnetic agitator
2009
Extension of the “hermet” magnetic agitator to bio-fermentation systems
2010
Development of “hermet” magnetic agitators for residual quantities
2011
Foundation of the Steva Oy sales office for Scandinavia
2012
Introduction of the CFD flow simulation
2013
Delivery of the largest chemical agitator in the history of the company
2014
Modernisation of the STELZER laboratory