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Last updateFri, 22 Jul 2016 4pm

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Wastewater Treatment

Wastewater Treatment

Society’s desire for a clean envir...

Controlling Our Water Systems, Part II

Controlling Our Water Systems, Part II

To better understand the actuators and c...

Controlling Our Water Systems

Controlling Our Water Systems

Actuators and controls are a critical pr...

Hardfacing Alloys and Processes for Advanced Ultra-Supercritical

Hardfacing Alloys and Processes for Advanced Ultra-Supercritical

Cobalt-based Stellite 6 has been the wor...

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Basics of Elastomeric Seal Design

Basics of Elastomeric Seal Design

Wednesday, 20 July 2016  |  Kate Kunkel

Engineers need critical design information when choosing a seal for a particular valve application. This includes:

  • Operating temperature and pressure r...

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Industry Headlines

Pentair Valves & Controls Rolls Out Customer Education Program

2 DAYS AGO

Pentair Valves & Controls has introduced the Pentair University customer education program for past, present and prospective clients and industry leaders in various locations throughout the world. Pentair University’s invitation-only seminars are free to attend. In some regions of the worl...

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Watson Valve Names Bob White New President

2 DAYS AGO
Watson Valve Names Bob White New President

Watson Valve Services Inc. has named Robert “Bob” White as its new president. The current president, John M. Watson, will remain as the company’s CEO.

Bob has served as executive vice president, and ownership, of Watson Valve Services since its inception in 2002. He has continued to p...

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Canadian Oil & Gas Earnings Signal Industry Recovery

1 DAY AGO

The Canadian oil and gas earnings season began yesterday with “signs of an industry recovery as Encana Corp and Precision Drilling Corp outlined plans to boost activity,” Reuters reports .

Analysts say “the uptick in optimism might be mirrored by some U.S. shale companies like Pioneer ...

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U.S. Lower 48 Sustains $150B in Cuts by Upstream Developers

2 DAYS AGO

Out of the more than $370 billion in global capital expenditure cut by upstream developers across 2016 and 2017, $150 billion was slashed in the U.S. Lower 48 alone — more than three times any other single country. Largely due to responsiveness and flexibility in the unconventional space, spen...

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STEM Jobs in the U.S. Growing Faster Than Other Fields

2 DAYS AGO

The U.S. Department of Commerce estimates that jobs in STEM will grow 17% by 2018—that’s 55% faster than non-STEM jobs over the next decade. Several reports have linked STEM education to the continued scientific leadership and economic growth of the U.S. However, economic projections also ...

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IMF Cuts Global Growth Forecast After Brexit Vote

3 DAYS AGO

The International Monetary Fund (IMF) cut its forecasts for global economic growth this year and next as the unexpected U.K. vote to leave the European Union creates a wave of uncertainty amid already-fragile business and consumer confidence.

The global economy is projected to expand 3.1% this year a...

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Triple Offset Valves in Upstream Applications

vmspr12_upstream_photo1Triple offset valves provide an efficient solution for critical and non-critical applications when positive isolation is required in upstream oil and gas operations. Their compact nature offers savings in weight and space and most importantly, cost.

Most onshore and offshore installations traditionally use ball valves and occasionally gate valves for the majority of flow isolation applications. Specifications typically call for 6D valves, but engineers seldom look beyond these specifications to other valve types with similar or better performance.

Many of these engineers are not yet aware that in many offshore isolation applications, a triple offset valve (TOV) offers benefits in terms of weight, overall dimensions and performance versus the standard ball or gate valve. A TOV can be the right choice for applications in the turret of a floating production storage and offloading vessel (FPSO), and in virtually all topside process applications of FPSOs and platforms such as separators, water treatment, gas compression and other systems.

Today’s TOVs, with pressure ratings up to ASME Class 1500 and zero leakage, cover enough applications to achieve significant savings in weight and space, as well as total cost of ownership.


HISTORY

The TOV design was introduced in the early 1970s as the next great development after the high-performance butterfly valve. The design is totally different from conventional or high-performance butterfly valves, however, offering a 90-degree non-rubbing rotation and metal-seated zero leakage.

Since the TOV was introduced, it has become a success with end users in the downstream oil and gas, process and power industries. It is recognized as a reliable, robust and valid alternative to gate and globe valves as well as ball valves.

The TOV concept is applied in a wide variety of applications from cryogenic to high temperature and from low- to high-pressure where positive isolation is required. Since its introduction, more than 500,000 TOVs have been installed worldwide with an extremely wide range of sizes and ratings and different materials—from WCB to duplex and from CF8M to titanium.

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