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Last updateTue, 27 Sep 2016 3pm

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An Alternative Basics Education: Valve Ed Comes to You!

An Alternative Basics Education: Valve Ed Comes to You!

For the first time in the seven-year his...

Give Your Flow Meter a Happy Home

Give Your Flow Meter a Happy Home

Increased emphasis on the need to improv...

What’s in Store for the Construction Market?

What’s in Store for the Construction Market?

As was the case with many of the present...

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Industry Headlines

ValvTechnologies Joins MSS of the Valve and Fittings Industry Committee

-1 DAYS AGO

ValvTechnologies, Inc. has been unanimously approved for membership in the Manufacturers Standardization Society (MSS) of the Valve and Fittings Industry Committee. Representing ValvTechnologies is Tony Majka, director of engineering.

The MSS is a non-profit technical association organized for develo...

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Jim White of Curtiss-Wright is New VMA Chair; Kim Beise of Dowco Receives Top Honor

-1 DAYS AGO

At the Valve Manufacturers Association’s 78th Annual Meeting, held Sept. 21-23 in Rancho Mirage, CA, Bob Kemple of ASCO (2015/16 VMA Chairman) passed the gavel for the coming year to Jim White of Curtiss-Wright, who will chair VMA through the 2017 annual meeting. The election took place at the ass...

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Alaska, ConocoPhillips Forming LNG Joint Venture

15 HOURS AGO

The State of Alaska, through the Alaska Gasline Development Corporation (AGDC), and ConocoPhillips Alaska Inc. have executed a Memorandum of Understanding regarding negotiations to form a joint venture (JV) that could facilitate marketing LNG from the Alaska LNG project to global LNG markets and acqui...

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Many Houston Chemical Facilities Could Be Operating Illegally

15 HOURS AGO

“Firefighters once routinely visited buildings in their districts to plan for emergencies — including ferreting out hazmat sites — but those visits stopped in April 2014. The department had started entering old plans into a new, sophisticated database and didn't want to create a ba...

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U.S. Consumer Confidence Surges to Nine-Year High

-1 DAYS AGO

The Conference Board Consumer Confidence Index, which had increased in August, improved further in September. The Index now stands at 104.1, up from 101.8 in August. The 104.1 figure is the highest since August 2007.

“Consumer confidence increased in September for a second consecutive month and i...

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Texas Manufacturing Strengthened in September

-1 DAYS AGO

Texas factory activity increased markedly in September, according to business executives responding to the Texas Manufacturing Outlook Survey . The production index, a key measure of state manufacturing conditions, rose 12 points to 16.7, suggesting output picked up at a notably faster pace this month...

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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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