08222017Tue
Last updateTue, 22 Aug 2017 6pm

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Standards

New API Standard for Globe Valves

14 spr standards globeWhile 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.


Pressure Seal Standards Update

VM STANDARDS GRAPHICThe 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.

Driving Valve Design in the Power Industry

nuclear plantsContrary 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.

API's New Casting Quality Standards

smelterpouringwebThe Valve Manufacturers Association held its annual Technical Seminar & Exhibits at the Hilton NASA Clear Lake in Houston, March 8-9. More than a dozen speakers presented on a variety of topics that centered on “Prevailing Challenges and Solutions for the Oil & Gas/Petrochemical Industries.”

Rick Faircloth is senior principal engineer, Engineered & Process Valves at Cameron Valves & Measurement in Houston. His presentation at the Technical Seminar provided a comprehensive overview of the newly proposed API casting quality standard, as well as a comparison with that of the Manufacturer’s Standardization Society (MSS).

The Proposed MSS Standard for ‘Standard-Class’ Castings

The issue of “commercial” casting quality has been argued at length at meetings, seminars and after-hours watering holes. But no one could really state what quality requirements needed to be met in order to call a casting a quality, commercial-grade valve casting.

The first thing that needs to be addressed is the word “commercial.” Commercial is not a technical casting term, so out it goes. In its place we use the term “standard class,” to differentiate them from their high-end “special class” brothers.

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