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Pipeline Valves—Always Ready

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From time to time, we will re-post particularly well-received articles that have previously run on VALVEMagazine.com so that those who might have missed them will be able to catch up on the best of the best. This article on Pipeline Valves, initially ran on November 7, 2011.

This nation is crisscrossed by hundreds of thousands of miles of crucial pipelines that transport vital feedstock from sources to the places where it’s transformed into fuel and products. For the valve industry, that translates into millions of dollars of business.


Power Plant Isolation Valves Beat the Heat

About a century ago, pressures of 300 psi and temperatures of 400°F (204°C) were normal for steam power plants. The next 50 years would see constantly rising pressures and temperatures as the quest for higher efficiency ­proceeded. By the end of the 1950s, temperatures approached 1200°F (648°C) and pressures above 4,000 psi were benchmarks for generating steam power in the supercritical (SC) range. As these new benchmarks have been achieved, the design of isolation valves used in these plants has changed, from cast iron T-pattern globe valves to 9 chrome pressure seal gate valves.

Critical Service Valves and Applications

15 sum critical 1If you perform a Google search on the words “critical service valves,” you quickly discover that the number of hits is endless. The term is one of the most over-used phrases in the valve industry today, with “severe service” running a close second. Everyone seems to use the terminology in describing their valves. No doubt there is someone out there selling a “critical service” 1/4-inch 200 water, oil, gas bronze gate valve or a “critical service” 3/4-inch hose bib.

 

Heavy Oil: Producing in a Hostile Environment

15 spr heavy oil introToday, the world has many resources of heavy oil. For those that seek to tap into that oil, the challenge has always been extraction, the process of “mining” the heavy crude. Today’s producers have developed new technologies that allow them to get such oil to the market efficiently.

Tank Cars

14 spr tank cars 1newThe next time you‘re stopped at a crossing waiting for a mile-long train you think will never pass, take a good look at how many of those cars are tank cars. Doesn’t it seem like many more tank cars are riding the rails these days?

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