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Last updateTue, 22 Aug 2017 6pm

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Picking the Right Flowmeter

There are many types of flow devices used to measure liquids and gases in closed pipes and open channels. Knowing which flowmeter is appropriate for which application requires knowing the difference between the many choices. This column seeks to give readers a basic understanding of the different types of flowmeters and what to consider when selecting them.


Greater Plant Efficiency through Positioner Innovation

13 spr BV fig1Plant operators across the world are tasked with maximizing efficiency and output from existing facilities, which can be a major challenge when there are many valves and actuators. Plant management strategy to accomplish this task includes developing a better understanding of how valve and control assets perform in the field and to adopt preventative maintenance to minimize plant downtime. Valve positioner technology today has evolved to help plant managers with this major challenge.

No Gaskets Required: Weld End Connections for Valves

vmfall12_beyond_valves_fig1To be of value, valves must be attached to a piping system. How that attachment occurs has changed over time. For decades, screwed or flanged connections were the only way to go. However, the perfection of fusion welding techniques in the 1930s led the way for new methods of joining piping components, including valves. These new ways are the butt-weld (BWE) (Figure 1) and socket-weld (SW) (Figure 2) end connections.

Soft Goods in Actuators and Valves

vmsum12_beyone_valves_o-ringsSoft goods such as rings, gaskets, bushings, washers, seals and packing sets are widely used in valves and actuators. Manufacturers specify fillings and percentages for compounds for these soft goods to ensure they will operate properly with their valve and actuator products.

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