OPW Engineered Systems Timeline

We are not the only fluid-handling equipment provider, but we are the only one with the OPW difference. We are also the only company that will never walk away until all expectations are met or exceeded – the OPW promise. See how we have grown a network of professional, knowledgeable and well-trained channel partners over 100-plus years of field experience.


Ohio Pattern Works is founded in Cincinnati, Ohio, USA

Ohio Pattern Works is the leading supplier of couplings, valves and nozzles to major oil and chemical companies

G. L. Ohrstrom & Associates acquires company and changes name to OPW

OPW introduces Kamlok® cam and groove quick-disconnect coupling

Dover Corporation acquires OPW

Kamvalok® dry disconnect coupling is the result of OPW's pioneering efforts to reduce liquid product loss

OPW reorganized into three separate business units; OPW Engineered Systems, OPW Fluid Handling, and OPW Fueling Components

OPW splits three business units into three distinct companies

OPW Fluid Handling changes its name to CIVACON (Cincinnati Valve and Control)

OPW relocates Civacon Cincinnati, Ohio facility to Kansas City. Kamlok®, Autolok™, Kamvalok®, and Drylok™ are moved to OPW Engineered Systems in Lebanon, Ohio

OPW Fluid Transfer Group was formed to include OPW-ES, Civacon/Knappco, Midland Manufacturing and OPW Fluid Transfer Group Europe B.V.

Acquired the Epsilon dry disconnect product line from Eaton Corp.

OPW acquires Hiltap Fittings, a leading supplier of high/low pressure and temperature fittings

OPW Fueling Components, combines with OPW Fluid Transfer Group to form one global company, focused on the distribution and transportation of critical fluids and fuels

OPW acquires Lianyungang Jump Petroleum Chemical Machine Co. Ltd


OPW-ES Products

Delivering the best quality loading arms

OPW offers premium-grade top and bottom loading arms, swivel joints, sight flow indicators, quick and dry disconnect couplers and safety breakaways for use in railcar rack systems and platforms, bulk plant and liquid terminals applications.

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Every Arm. Every Option. Only OPW.

OPW offers the most complete line of loading arm systems and loading-rack equipment for today's bulk loading and unloading requirements.

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Every Arm. Every Option. Only OPW.

Design, plant and maintenance engineers use OPW swivel joints in flexible piping systems, loading arms, hose reels, sewer rodding and wastewater treatment equipment, and various types of process machinery.

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Every Arm. Every Option. Only OPW.

OPW Engineered Systems is a world-class manufacturer of quick and dry disconnect fittings designed to meet any fluid handling need.

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Every Arm. Every Option. Only OPW.

Whether you’re monitoring petroleum products, liquefied gases, solvents, or hazardous, corrosive chemicals, OPW’s collection of Process Products help keep your fluids under control.

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