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Technical


High-Performance Polymers: The Gap Between Need and Science

In many engineering sectors, application environments for polymer-based materials are expanding into ever higher temperatures, differential pressures and increased corrosive chemical attack. Consequently, end users and material providers must address the need for improved or new materials that will meet these demands, which is no small feat.

In this article, we will consider the generically classified “high-performance polymers” (HPPs) that include such material families as polyaryletherketones, polyphenylene sulphides, polyimides, polyamideimides and polyphenylsulphones. These are all commonly selected as the primary polymer type for components used in highly demanding environments.

Valve Packing & Gasket Research and Development Devices

teadit gasketsThe continuous improvement of valve packing technology has created a new baseline for the industry to achieve emission levels that previously were possible only with the use of bellows seals. To develop low emission valve packing and bonnet gaskets, it is necessary to have testing devices that simulate the actual service conditions while the critical parameters are monitored. This article summarizes several testing devices available to the help valve manufacturers engineer products that reduce emissions and meet new standards set by EPA consent decrees.

Understanding Functional Safety Standards

Understanding Functional Safety StandardsWhile many people might recognize the term “functional safety” and assume they know what it means, for the purposes of standards, the term itself needs explanation. Finding an understanding and complying with functional safety standards play a vital role in everyone’s safety. Breaking down what it is and why it matters are the first steps to full comprehension of functional safety and, ultimately, a safer world.

Improve Ethylene Conversion: Critical Control Valves for Cracked Gas Processing

Improve Ethylene Conversion

Maximum ethylene production requires several conditions: a highly saturated feedstock, high coil outlet temperature, low hydrocarbon partial pressure, short residence time in the radiant coil, and rapid quenching of the cracked gases. Out of these, cracked gas quenching is the only condition occurring downstream of the furnace, and is one of several steps that must occur before hydrocarbon fractionation occurs.

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