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Durco Quarter-turn Valve

Flowserve's product line of Durco® quarter-turn valves consists of manually operated plug, ball and butterfly valves, which are widely used in the petroleum refining, chemical processing, pulp & paper, and pharmaceutical industries. These industries often have demanding corrosive services that require valves not only to control process fluids, but also to keep process fluids from reaching the atmosphere. With today's emphasis on environmental concerns, Durco valves are widely used because their rotary shaft motion makes the stem seal inherently less susceptible to atmospheric leakage.

The mainstay of the Durco line of quarter-turn valves is a rugged plug valve manufactured in a wide variety of materials and styles. The Durco Sleeveline plug valve is often used for bubble-tight shutoff isolation for pumps, reactors and other process equipment. The versatile Sleeveline plug valve design can be modified to meet a number of specific application requirements. The Durco T-line plug valve body and plug are both fluoropolymer-lined, providing an economical solution for corrosive applications. Both Durco plug valves can be fitted with characterized plugs and are suitable for control applications.

An important part of the Durco product line is a wide range of butterfly valves (available in both concentric and double-offset designs). Concentric style bodies are fluoropolymer-lined and offer triple-stem seal protection. The high perfor- mance double-offset butterfly valve offers a choice of soft, metal or fire-seal seats, and is available in both wafer and lug-style bodies. Its extensive ball valve line includes a number of lined and metallic versions. Although Durco valves are typically equipped with manual operators, they are especially well suited for adaptation to actuation systems.

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