- Published on Monday, 21 September 2015 15:09
- Written by Ross Waters
At this time, no national standards exist that clearly define severe service valves (SSVs) or set them apart from general purpose valves.
Most experts agree that SSVs are identified by applications, and that these applications challenge the valve’s ability to provide a minimum acceptable level of performance over a minimum acceptable duration. All valve design functions require basic information, but for those valves destined for severe service, it is imperative to have a comprehensive understanding of the factors that affect their in-service performance. A recognized definition would benefit users through improved process performance and increased profitability, safety and environmental protection.
- Published on Monday, 24 November 2014 10:38
- Written by Eric McClafferty
The U.S. valve industry has been hit very hard over the last seven years by export control penalties. Over 50 companies in the fluid handling industry, including numerous valve companies of all sizes, have paid penalties ranging from $250 million to tens of thousands of dollars in connection with violations of export controls. Companies have seen their names publicized in connection with violations of U.S. law and their reputations before key U.S. government agencies have been severely damaged. A number of those penalty cases arose because companies were not prepared for a series of past changes in the Export Administration Regulations (EAR), which are implemented by the U.S. Department of Commerce’s Bureau of Industry and Security (BIS). Now, a new set of changes is coming to export controls on valves that can be used to handle chemicals. Companies have a chance to prepare for the change in rules and avoid violations.
- Published on Tuesday, 24 June 2014 14:58
- Written by Javier Vergara
While the American Petroleum Institute (API) and other organizations published a variety of valve standards covering gate, ball, check, butterfly and plug valves for decades, the first for globe valves came out in 2013. It is API 623, Steel Globe Valves—Flanged and Butt-welding Ends, Bolted Bonnets. The size range covered by the valves in this standard is 2-24 inches, and the standard covers ANSI classes 150 through 2500.
- Published on Monday, 28 April 2014 13:13
- Written by Carlos E. Davila, PE
The EPA has been reducing the allowable fugitive emissions on valves in the last few years. Due to the upcoming emission legislation, most refineries, chemical and process industry plants will have to monitor their emissions more closely. Additionally, new industry standards, both API and ISO, are being published or revised for type testing of valves to improve emissions in new valves.
- Published on Monday, 06 May 2013 16:56
- Written by Paul Major
Contrary to what might be expected, valve design in the power industry is not necessarily driven by codes and standards. So what is it, then, that sends engineers to the drawing board?
In a recent presentation at VMA’s 2013 Technical Seminar on valve and actuator trends, Paul Major of Velan Valve Corporation answered that question while illustrating the importance of codes and standards for the smooth, safe operation of power plants. Following is a summary of the key points Major made during his presentation.