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Human Factors Can Cause a Disaster—or Prevent One

Human Factors Can Cause a Disaster—or Prevent One

Process industry plants are complex and ...

Improving Valve Sealing Performance and Reliability

Improving Valve Sealing Performance and Reliability

From time to time, we are re-posting wel...

A Primer on Fugitive Emissions

A Primer on Fugitive Emissions

Fourscore and seven years ago, no one ha...

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Industry Headlines

Industry Headlines

Emerson Expanding Mississippi Facility

1 DAY AGO

Emerson plans on delivering $500,000 in new equipment to its facility in Sherman, MS. Because of this investment , and its promise of new jobs for the region, the Sherman Economic Development Corp. has approved $150,000 in grants for Emerson.

"We have a relatively new Fisher product that will be reloca...

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REXA and CCC Form Joint Initiative

1 DAY AGO

REXA and Compressor Controls Corporation (CCC) have formed a joint initiative to modernize steam turbine controls for enhanced performance based upon each company’s core competency.

There are more than 10,000 turbomachinery trains worldwide powered by CCC. By upgrading mechanical and hydraulic go...

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Chevron and Pembina Sign Deal to Build Pipelines, Other Facilities

1 DAY AGO

Calgary-based Pembina Pipeline Corp. has signed a 20-year deal with Chevron to build natural gas pipelines and processing facilities for a potential production operation in northwest Edmonton, Alberta. The infrastructure developed over the term of this agreement has the potential to represent a multi-...

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U.S. in Midst of Biggest Drilling Surge Since 2012

1 DAY AGO

“U.S. drillers pushed ahead on the biggest surge in oil drilling since 2012 as companies take advantage of oil prices that have held steady above $50 for almost three months,” Bloomberg reports .

“Drilling is booming in a few shale plays -- led by the Permian Basin in West Texas and Ne...

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U.S. Private Sector Growth Slows from January’s 14-Month Peak

1 DAY AGO

At 54.3 in February, the seasonally adjusted Markit Flash U.S. Composite PMI Output Index dropped from 55.8 in January but remained above the 50.0 no-change value for the twelfth consecutive month. The latest reading signaled that private sector output growth moderated from the 14-month high recorded ...

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NAM Kicks Off Tour at Emerson Innovation Center in Austin

1 DAY AGO

The National Association of Manufacturers (NAM) kicked off the 2017 State of Manufacturing Tour at Emerson Innovation Center in Austin, TX—a “hotbed of modern manufacturing.” The event is the first in a series of stops in six states throughout the next week, including a visit with Pr...

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Standards Spring from the Need to Protect

vmspr12_anniv_1Inspection personnel are checking dimensions of finished components to ensure compliance to newly published valve standards.

Most of us in the valve industry take for granted the interchangeability and standardization of the valves produced today. Yet it wasn’t that long ago that valves were individually produced in accordance with the standards of each manufacturer.

Things like end-to-end dimensions, flange sizes and bolt circles, and even pressure ratings, were left up to the engineering and production departments of each company. Such factors were addressed in due time; however, as with many drivers in the manufacturing world, the first valve standard to be drafted covered something much more important—life and death.

Back in the latter half of the 19th century, boiler explosions were occurring at an alarming frequency, and public outcry was heard throughout the land—it appeared that the steam-fired industrial revolution was threatening to literally blow itself up.

In 1880, the American Society of Mechanical Engineers (ASME) was formed and over the next few decades this group of engineers created the first iteration of the Boiler and Pressure Vessel Code (B&PVC). The problem of inconsistent boiler integrity was high on the group’s list of topics to be addressed. While the code initially dealt with a number of issues concerning materials and construction, it ­wasn’t until the 1914 edition of the B&PVC that safety valves were covered. It would be the first time in ­history that makers of safety valves had agreed to common standards for their products.

These groundbreaking safety valve rules and regulations would be honed over the years and are still actively supported today by a group in ASME called the National Board of Boiler and Pressure Vessel Inspectors.


vmspr12_anniv_7Power plants created the first need for valve standardization.A PUSH FORWARD

The industrial growth during the first years of the 20th century highlighted the need for valve and piping standardization throughout the world of manufacturing. The Henry Ford automobile assembly line techniques were adopted by many industries, including valve and fitting manufacturers. While products were flying off the assembly lines at record rates, there was no interchangeability between manufacturers’ products. You only have to look at catalogs of the day—product images show valves with blank flanges, devoid of bolt holes—to see that something was missing. The something was flange standards. Back then, it was up to the purchaser to provide the bolt-hole drilling information.

vmspr12_anniv_2In days past, customers had to specify the flange drilling they required because there were no standards to follow.This lack of interchangeability resulted in a Committee of Manufacturers on Standardization of Pipe Fittings and Valves, which was formed in 1912. The group would later become the Manufacturers Standardization Society (MSS); it published its first pamphlet on pipe schedules of flanges and flanged fittings in October of 1912 and additional flange standards over the next few years. The official creation of MSS in 1924 opened the door for many valve standards over the next nine decades. During that time, numerous standards originally developed by MSS would be adopted by other organizations, such as ASME and the American Petroleum Institute (API).

vmspr12_anniv_3This check valve and globe valve installed in a 1942-era warship have been built to recently standardized end-to-end dimensions to ensure interchangeability.The American Standards Association committee B16, Sectional Committee on the Standardization of Pipe Flanges & Fittings, was created in 1921. It would later spawn other B16 committees of great importance to the valve industry. For example, one of the issues tackled by this B16 group was the lack of valve end-to-end standards. A 1927 charter to create common end-to-end standards was beset by many difficulties, not the least of which was the economic downturn of the 1930s. In 1937, the group finally adopted a proposal MSS originally put forth in 1931. This document would later become ASME/ANSI B16.10, Face-to-Face and End-to-End Dimensions of Valves.

In 1936 API, in response to the huge growth in the oil and gas business, published 5-G-1, Pipeline Valves. Following the turmoil of World War II, API 5-G-1 would be expanded into the first edition of API 6D, at the time titled Iron and Steel Flanged Gate, Plug and Check Valves for Pipeline Service.

Probably the most familiar standard in the industrial valve business today is API 600, which covers steel valves for refinery service. When first published in 1939, the document was titled API Standard on Flanged Steel, Outside Screw and Yoke, Wedge Gate Valves. The API 600 document exists today as Steel Gate Valves, Flanged and Butt-welding Ends, Bolted Bonnets.

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