[5][6] As of 2021, Dover's business was divided into five segments: Engineered Products, Clean Energy and Fueling, Imaging & Identification, Pumps & Process Solutions and Climate and Sustainability Technologies.

The company was shortened to OPW, and in 1949 one of its engineers, Leonard H. Duerr, invented the automatic shutoff fuel-dispensing nozzle valve.

[21] Today, the basic technology of Duerr's invention continues to exist in automatic shutoff nozzles,[22] and OPW is still a part of Dover, specializing in the design and manufacture of commercial and retail-fueling.

[27] 1964 marked a significant year, as OPW's former leader Thomas Sutton became president of Dover, and corporate headquarters were relocated to New York City.

[28] The Sargent Aerospace & Defense unit persisted as a global supplier of precision-engineered components and aftermarket services, performing critical functions on a variety of commercial and military aircraft, submarines and land-based vehicles.

Hillphoenix now manufactures commercial refrigeration systems and mechanical centers, electrical distribution products, walk-in coolers and freezers, and specialty display cases and fixtures.

[36][clarification needed] Dover focused on growing target areas from 2007 to 2009, including electronic communication, energy and fluids, product identification, and refrigeration.

Anthony designs and manufactures specialty glass, commercial-glass refrigeration and freezer doors, lighting systems, and display equipment.

Factors at play in this decision included Chicago's central location, wide variety of housing options for employees, quality of life, and nearby air service to national and global destinations.

Livingston's corporate development strategy sought to strengthen promising businesses and divest those that were either growing slowly or had significant exposure to highly volatile industries.

Livingston also worked to reduced expenses by consolidating back office operations, metal purchases, and freight transportation.

[36] In 2011, Dover expanded its acoustic components business with the purchase of Sound Solutions, a manufacturer of dynamic speakers and receivers for mobile phones and other consumer electronics, for $855 million.

[44] Dover had acquired Knowles, a designer and manufacturer of hearing-aid technology and other acoustical componentry, six years earlier for $750 million.

[45] Sound Solutions and Knowles gave Dover the necessary scale to develop items for the rapidly evolving mobile-electronics industry.

[47] Today, Knowles continues to be a global supplier of communication-technology components, such as MEMS (micro-electro-mechanical systems), microphones, speakers, receivers, transducers, capacitors and oscillators.

[56] In 2007, Dover reported four segments: Industrial Products, Engineered Systems, Fluid Management, and Electronic Technologies.

[57] Following 2014, Dover Corporation operated with four segments: Energy, Engineered Systems, Fluids, and Refrigeration & Food Equipment.

[16] Dover Corporation is as of 2022 divided into five operating segments: Engineered Products, Clean Energy and Fueling, Imaging and Identification, Pumps and Process Solutions, and Climate and Sustainability Technologies.

[63] The Imaging and Identification segment supplies equipment and services to the marking and coding, product traceability, and digital textile printing markets.

[63] The Pumps and Process Solutions segment manufactures products for handling fluids across the chemical, hygienic, biopharma, oil and gas, and industrial sectors.

[63][7] Dover's energy segment works in the drilling and production markets to develop systems that extract oil and gas.

[66] DEA includes Quartzdyne, which designs, develops, and manufactures resonating quartz pressure transducers for the downhole oil-and-gas industry.

Lastly, Performance Motorsports Inc., Texas Hydraulics, Vehicle Service Group, and Warn are focused on the automobile and vehicle-service industry.

The systems are able to be remotely controlled and configured over the internet via a web interface; owners are able to see the status of the car wash and send commands to the machine.

[81][82][83] The Imaging & Identification segment is involved with the design and manufacture of equipment, consumables and software, in addition to providing support services for the marking and coding and for digital textile printing markets.