Industry Knowledge
Selection guides, safety comparisons, installation tips, and application case studies — sourced from DERVOS technical content.
7 articles
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In refinery turnaround work, pipeline isolation is often treated as a routine maintenance task until operators face leakage during hot work preparation or line intervention. Choosing between a spectacle blind valve and a paddle blind is not simply a matter of installation preference. The selection a...
Common installation mistakes involving depressurization, flange alignment, sealing surfaces, torque, temperature, supports, and leakage testing, with guidance for reliable positive isolation.
Read article →Customer Challenge: Seal Failure and Lack of Positive Isolation During Frequent Multi-Media Switching
Read article →The core value of a line blind valve (blind valve / blind isolation device)is positive isolation—achieving zero leakage through a solid blind plate. This function is almost irreplaceable in oil & gas, petrochemical, and storage & transportation systems.
Read article →If zero leakageis required, then conventional valves (such as gate valves or ball valves) introduce risk, as their performance depends on sealing integrity.
Read article →Introduction: Why Steam Isolation Demands Specialized Valves
Read article →For pipelines carrying high-pressure or high-temperature media, a line blind provides more reliable full isolation compared to a gate valve. Although a gate valve can achieve complete shut-off, frequent operation or prolonged exposure to high temperatures can accelerate sealing surface wear or lead ...
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