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Posts Tagged ‘triple offset valve’

Valves for Frequent Cycling, High Pressures and Temperatures

Posted in Final Control Element, Oil & Gas on Monday, April 30th, 2018. No comments yet
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David Leavitt described an application of high-cycling valves in a dehydration process at the Offshore Technology Conference (OTC) in Houston, Texas. I recapped his presentation last week in a post, Triple Offset Valves and Molecular Sieve Adsorption Applications. He compared rising stem ball valves and triple offset valves (TOVs) used in these applications. David describe […]

Triple Offset Valves and Molecular Sieve Adsorption Applications

Posted in Final Control Element, Oil & Gas on Wednesday, April 25th, 2018. No comments yet
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Adsorption, different from absorption, is the process of the: …adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface.[1] In process manufacturing operations, adsorption is sometimes used in dehydration or purification processes. In the oil & gas industry, this method is used to dehydrate and remove contaminants from natural […]

Reliable Switching Valves for Ethylene Production Molecular Sieve Applications

Posted in Chemical, Final Control Element on Friday, November 10th, 2017. No comments yet
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For a valve, zero leakage is defined as no visible leakage when tested at high pressure with water and low pressure with air according to existing international standards. Some of these seat leakage standards for control and isolation valves include ANSI/FCI 70-2/IEC 60534-4, API 598, MSS SP-61 and ISO 5208. ANSI/FCI 70-2 and IEC 60534-4. […]

Top-Entry Triple Offset Valves in LNG Applications

Posted in Final Control Element on Friday, August 4th, 2017. No comments yet
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The global natural gas market continues to develop as additional liquefied natural gas (LNG) facilities come online across the world. These LNG facilities have many challenges including equipment such as valves which come in contact directly with the cryogenic process. Considerations not only include fit for the application, but also how to safely and effectively […]