CIRCOR International, Inc. designs, manufactures, and markets engineered products and sub-systems worldwide. It operates through three segments: Energy, Aerospace and Defense, and Industrial. The Energy segment offers a range of flow control solutions and services, including valves, such as engineered trunion and floating ball valves; gate, globe, and check valves; and butterfly valves, as well as delayed coking unheading devices and fluid catalytic converter and isolation valves. It also provides instrumentation fittings and sampling systems comprising sight glasses and gauge valves; liquid level controllers and level switches, plugs and probes pressure controllers, and pressure regulators; oil mist systems and preventative lubrication services; and pipeline pigs, quick opening closures, and pig signalers. This segment offers its products and services to end-user customers, such as oil companies; engineering, procurement, and construction (EPC) companies; and distributors through direct sales, sales representatives, and agents. The Aerospace and Defense segment manufactures and markets control valves, automatic recirculation valves, regulators, fluid controls, actuation systems, landing gear components, pneumatic controls, electro-mechanical controls, and other flow control products and systems. Its products and services are used by various customers in the military and defense, commercial aerospace, business and general aviation, and general industrial markets. This segment serves aircraft manufacturers and tier 1 suppliers to aircraft manufacturers. The Industrial segment provides 3 and 2 screw, progressing cavity, specialty centrifugal, and gear metering pumps; multiphase pump systems; automatic recircultaing valves; and severe service and general service control valves for the end-users, OEMs, and EPC companies. CIRCOR International, Inc. was founded in 1999 and is headquartered in Burlington, Massachusetts.