1892
Ohio Pattern Works is founded in Cincinnati, Ohio, USA
1916
Ohio Pattern Works is the leading supplier of couplings, valves and nozzles to major oil and chemical companies
1948
G. L. Ohrstrom & Associates acquires company and changes name to OPW
1949
OPW introduces Kamlok® cam and groove quick-disconnect coupling
1960
Dover Corporation acquires OPW
1961
Kamvalok® dry disconnect coupling is the result of OPW's pioneering efforts to reduce liquid product loss
1983
OPW reorganized into three separate business units; OPW Engineered Systems, OPW Fluid Handling, and OPW Fueling Components
1988
OPW splits three business units into three distinct companies
1989
OPW Fluid Handling changes its name to CIVACON (Cincinnati Valve and Control)