Wednesday 11 November 2020

Why choose Corrosive service ball valves from Gosco Valves?

Corrosive service valves are often identified by applications that challenge the valve’s ability to survive, but the term SSV can mean different things to different people. In the past, defining Corrosive service valves had little, if any, global agreement or common recognition. That is about to change as the Manufacturers Standardization Society (MSS; Vienna, Va.; www.msshq.org) has accepted an application to produce a standard practice document to define them.

Within these challenging applications, the conditions that make the service severe are being analyzed, quantified and qualified. From this effort, it is expected that objective and repeatable definitions will arise, along with guidance to improve the performance of SSVs, reduce unnecessary costs, provide longer service life and process runs, improve safety and reduce environmental issues.



This blog provides information about the selection of Corrosive service ball valves in all chemical process industries (CPI), but focuses on metallurgical processes and applications, and offers examples to illustrate both the successful and unsuccessful use of this type of valve. The intent of the article is to raise the awareness of SSV considerations for all industry stakeholders, including suppliers and manufacturers, specifies and users, as well as owners. The article also supplies tools to better understand where and why Corrosive service valves should be categorized separately from commodity or general purpose valves (GPVs).

Corrosive service ball valves can be found throughout the CPI. However, certain industry sectors have many more SSV-related challenges than others. For example, municipal water treatment will have fewer SSV opportunities or needs than the mining or chemical industries.

In general, valves have two basic uses; they either control a process variable (like pH), or they isolate the process. No matter what type of valve — ball, butterfly, check or globe — all fit somewhere into the basic role of control or isolation.

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