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<p><span lang="ru">A</span> <b>shutdown valve</b> (also referred to as <b>SDV</b> or <b>emergency shutdown valve</b>, <b>ESV</b>, <b>ESD</b>, or <b>ESDV</b>; or <b>safety shutoff valve</b>) is an <a href="page.php?w=actuated">actuated</a> <a href="page.php?w=valve">valve</a> designed to stop the flow of a hazardous fluid upon the detection of a dangerous event. This provides protection against possible harm to people, equipment or the environment.Shutdown valves form part of a <a href="page.php?w=safety_instrumented_system">safety instrumented system</a>.</p><p>
<a accesskey="3" href="page.php?w=Shutdown_valve&amp;p=2">3.Next</a>
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