{"id":5130,"date":"2026-06-02T08:00:00","date_gmt":"2026-06-02T00:00:00","guid":{"rendered":"https:\/\/www.aox-actuator.com\/?p=5130"},"modified":"2026-06-18T17:30:29","modified_gmt":"2026-06-18T09:30:29","slug":"how-to-choose-explosion-proof-electric-valve","status":"publish","type":"post","link":"https:\/\/www.aox-actuator.com\/fa\/blog\/standards\/how-to-choose-explosion-proof-electric-valve\/","title":{"rendered":"How to Choose an Explosion Proof Electric Valve: 5 Factors That Matter"},"content":{"rendered":"

\u06cc\u06a9 explosion-proof electric valve<\/a> is a mandatory safety barrier in any facility handling flammable gases or combustible dusts. Neglecting the specific gas group rating on these units often leads to catastrophic ignition events during a routine plant trip. Field experience shows that a single unsealed conduit entry can invalidate the entire safety rating of the assembly, posing a massive risk to infrastructure.<\/p>\n\n\n\n

Professional contractors prioritize these valves in refineries and chemical headers where an undefined valve position during power loss creates an unacceptable risk. Correct selection ensures the valve defaults to a controlled state without the need for immediate technician intervention. Choosing a certified partner ensures your facility meets regulatory audits while protecting your long-term operational costs.<\/p>\n\n\n\n

Why Standard Electric Actuators Cannot Be Used in Hazardous Areas<\/strong><\/h2>\n\n\n\n
\"\u0645\u062c\u0645\u0648\u0639\u0647<\/figure>\n\n\n\n

In industrial automation, we define a hazardous area by the presence of substances that form explosive mixtures with air. This includes hydrogen vapors in gas distribution stations, methane in sewage treatment, or fine organic dust in grain silos. These environments are strictly classified into \u201cZones\u201d based on the frequency of explosive atmospheres according to international standards like IEC 60079, requiring hardware that can contain internal sparks.<\/p>\n\n\n\n

The risk of ignition from standard electrical equipment<\/strong><\/h3>\n\n\n\n

When you are dealing with explosive vapors, standard electric actuators are a significant liability because they are not built to contain internal thermal energy. Standard motors generate heat, and their mechanical switches can produce small arcs during operation, acting as ignition sources in volatile air. A certified flame-proof enclosure, such as the AOX-Q series, ensures that any internal combustion is cooled and contained before it ever reaches the external atmosphere.<\/p>\n\n\n\n

5 Factors to Evaluate When Choosing an Explosion-Proof Electric Valve<\/strong><\/h2>\n\n\n\n

Factor 1 \u2014 Explosion-proof certification: ATEX vs. IECEx<\/strong><\/h3>\n\n\n\n

The first step is verifying that the certification aligns with your specific hazard profile. Globally, ATEX and IECEx are the benchmarks, defining strict criteria for Gas Groups (IIA, IIB, IIC) and Temperature Classes (T1\u2013T6). You must match the \u201cEx db\u201d (flame-proof) rating to your gas group; for instance, Group IIB is standard for most chemicals, but Hydrogen requires Group IIC protection. For high-stakes projects, the electric explosion-proof ball valve<\/a> \u062a\u0631\u062c\u06cc\u062d \u062f\u0627\u062f\u0647 \u0634\u062f\u0647 \u0628\u0631\u0627\u06cc \u0645\u062d\u06cc\u0637\u200c\u0647\u0627\u06cc \u0645\u0646\u0637\u0642\u0647 \u06f1 \u0648 \u0645\u0646\u0637\u0642\u0647 \u06f2 \u0627\u0633\u062a.<\/p>\n\n\n\n

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\u0646\u0648\u0639 \u0634\u06cc\u0631\u060c \u0646\u06cc\u0627\u0632 \u0628\u0647 \u06af\u0634\u062a\u0627\u0648\u0631 \u0648 \u0633\u06cc\u06af\u0646\u0627\u0644 \u06a9\u0646\u062a\u0631\u0644<\/strong><\/h3>\n\n\n\n

\u0642\u0637\u0631 \u0627\u0633\u0645\u06cc (DN15\u2013DN400) \u0648 \u062f\u0631\u062c\u0647 \u0641\u0634\u0627\u0631 (PN16\u2013PN65) \u0634\u06cc\u0631 \u062e\u0648\u062f \u0631\u0627 \u062a\u0623\u06cc\u06cc\u062f \u06a9\u0646\u06cc\u062f. \u062f\u0627\u0646\u0633\u062a\u0646 \u0645\u0646\u0628\u0639 \u062a\u063a\u0630\u06cc\u0647 (AC220V \u06cc\u0627 DC24V) \u0648 \u0646\u0648\u0639 \u0633\u06cc\u06af\u0646\u0627\u0644 \u0645\u0648\u0631\u062f \u0646\u06cc\u0627\u0632 \u062a\u0636\u0645\u06cc\u0646 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u0627\u0644\u06a9\u062a\u0631\u0648\u0646\u06cc\u06a9 \u062f\u0627\u062e\u0644\u06cc \u0628\u0627 \u0645\u0639\u0645\u0627\u0631\u06cc \u06a9\u0646\u062a\u0631\u0644 \u0645\u0648\u062c\u0648\u062f \u0634\u0645\u0627 \u0633\u0627\u0632\u06af\u0627\u0631 \u0627\u0633\u062a.<\/p>\n\n\n\n

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\"\u06f1.<\/figure>\n\n\n\n

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