Last updateMon, 26 Jul 2021 9pm

Selecting Non-metal Materials for Valve Components and Coatings

Non-metallic materials are commonly used for valve components. The selection of non-metallic materials for valve design and for application-specific conditions is critical to ensuring product reliability. Like metallic materials used in valve designs, to meet reliability target selection of non-metallic materials is important to fulfill the design function of the component in the intended applications. In this article, we address some key areas to aid in the design and selection of non-metallic materials.

Enhanced Safety in LNG Applications

For more than 40 years, the safety record of the global LNG industry has been excellent, due to attention to detail in engineering, construction and operations. While the safety of processing and handling LNG has always been paramount, it is now even more important to retain this excellent record as LNG installations are getting smaller, therefore multiplying and being constructed closer to populous areas. The reliability and dependability of pressure safety valves (PSVs) protecting these installations is more critical than ever.

The Next Step in Functional Safety

The main goal of functional safety is to prevent accidents. When people think of functional safety, key words such as failure rates and safety integrity level (SIL), come to mind. However, these words only scratch the surface of understanding functional safety. Plant engineers and end users know the use of IEC 61508 certified devices alone does not guarantee a safe design, especially with a final element assembly. For example, analyzed field failure reports for remote actuated valve assemblies show that the root cause for many of these failures is application mismatch, insufficient lifetime torque matching and assembly errors. A study done in the UK supports this as well (Figure 1). The realization is that these automated valve assemblies do not always provide the anticipated safety.

The Future of Manufacturing is Already Here

Companies in the valve and control products industry are responding to a confluence of forces that are changing the landscape of manufacturing.

Kevin Tinsley shares a commonly held fear in the manufacturing industry. “My nightmare is getting the phone call that somebody got hurt in our facility,” said Tinsley, senior vice president of Neles Global Operations. The company recently mitigated some of the risk by combining artificial intelligence (AI) and robotics to perform high-pressure testing of its valves.

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