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A ball valve is a flow control device which uses a hollow, perforated, and pivoting ball to control fluid flowing through it. It is open when the hole through the middle of the ball is in line with the flow inlet, and closed when it is pivoted 90 degrees by the valve handle, blocking the flow. [1]
Valves stop (or regulate) the flow of liquids or gases. They are categorized by application, such as isolation, throttling, and non-return. Isolation valves temporarily disconnect part of a piping system to allow maintenance or repair, for example. Isolation valves are typically left in either a fully open or closed position.
The inside of an extremely large butterfly valve Duplex ball valve Three check valves in corrosion-resistant Hastelloy Stainless steel gate valve. Valves can be categorized into the following types, based on their operating mechanism: Ball valve, for on–off control without pressure drop. Ideal for quick shut-off, since a 90° turn completely ...
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In 2015, it bought Worldmark, a British labelling company specializing in labels for the technology sector, for $255 million. [10] In 2016, it acquired Checkpoint Systems for $422 million. [11] In December 2016, CCL acquired Innovia Films Ltd, a British specialty films company, for $1.13 billion Canadian Dollars. [12] In 2017, it joined the S&P ...
Eight people were killed and 17 others injured in a stabbing attack on a college campus in eastern China on Saturday, police said — the latest in a recent spate of attacks that has shaken a ...
Pinch valves employ an elastic tubing (sleeve/hose) and a device that directly contacts the tubing (body). Forcing the tubing together creates a seal that is equivalent to the tubing's permeability. [1] Air-operated pinch valves consist of an elasticised reinforced rubber hose, a type of housing, and two socket end covers (or flanges).
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