OPW Fluid Transfer Group - A Dover Company
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OPWFTG Operating Companies

OPWFTG is made up of market-leading brands, or operating companies. These brands are known around the world for their quality, reliability, and exceptional performance.

OPW Engineered Systems

Specializes in designing and manufacturing products for safe and efficient loading and unloading of critical hazardous chemicals: loading arms, swivel joints, sight flow indicators, quick and dry disconnect couplers, and safety breakaways.

Civacon Knappco

Specializes in products for petroleum, chemical and dry bulk cargo tanks that help safeguard against spills, overfills, and fugitive emissions: access ports, manholes, weld rings, hatches, fill covers, swing check valves, pressure vacuum hatches, pressure relief valves, vapor valves, bottom loading equipment, delivery elbows, overfill detection devices, and vapor recovery adaptors.

OPWFTG Europe

OPW Fluid Transfer Group Europe B.V. is a leading manufacturer of a full range of loading arms, and subsequent fluid handling equipment and a major provider of cargo tank products and an extensive package of bulk handling fittings for markets in Europe, the former Soviet Union, Africa, the Middle East, and Asia as far as Pakistan.

Midland

Midland Manufacturing is a leading manufacturer of components and systems for use on general purpose and pressure rail tank cars to ensure the safe handling, loading, transport and unloading of hazardous bulk products: pressure relief valves, check valves, vacuum relief and needle valves, top transfer valves, loading and unloading angle valves, bottom equipment, rupture disc devices, actuator systems, manway cover plates, lift assisters, level measurement gauges.

Sure Seal

Specializes in components for pneumatic tank trailers, rail cars, chemical and pharmaceutical plants, and any application requiring the processing, movement and storage of dry bulk or liquid materials: butterfly valves, lined ball valves, actuators, aeration systems, relief valves, hopper tees, couplers, and sanitary valves.