08222017Tue
Last updateTue, 22 Aug 2017 6pm

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Technical

Braided Packing: An Old Technology with a Modern Twist

Braided PackingCompression packing is the primary method employed to seal the stem of many types of valves. It is made from soft, pliable material that is cut or formed into rings and compressed in an annular cavity to seal around a moving shaft. Compression packings are contained and compressed by a packing gland within a cavity called a stuffing box. It is a technology that has existed for a long time.


Fugitive Emission Testing and Certification of Valves – What Next?

Fugitive Emission Testing and Certification of Valves What NextThe primary sources of fugitive emissions from refineries and chemical plants are equipment leaks, process venting, evaporation losses, flaring, and accidents and equipment failures. When monitoring plants, the Environmental Protection Agency (EPA) is heavily focused on methane emissions.

Why such a heavy focus on methane? According to the EPA, methane is the predominant greenhouse gas emitted by the oil and gas sector. It is the second most prevalent greenhouse gas emitted in the U.S. from human activity. Per EPA reports, pound for pound, methane has 25 times the global warming potential of carbon dioxide. Methane’s lifetime in the atmosphere is much shorter than CO2, but it is more efficient at trapping radiation. As such, it is considered detrimental to public health.

Knifegate Valve Maintenance and Repair

Knife Gate Valve Maintenance and Repair 1Knife gate valves are used to provide isolation in various applications including oil sands slurries, pulp stock, waste water and power generation. It is one of the simplest valve designs, and with only one moving part, the preventative maintenance schedule is straightforward.

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