{"id":5214,"date":"2025-08-11T16:13:07","date_gmt":"2025-08-11T08:13:07","guid":{"rendered":"https:\/\/waltervalves.com\/?p=5214"},"modified":"2025-08-11T16:13:08","modified_gmt":"2025-08-11T08:13:08","slug":"how-does-a-double-block-and-bleed-valve-work","status":"publish","type":"post","link":"https:\/\/waltervalves.com\/ja\/how-does-a-double-block-and-bleed-valve-work\/","title":{"rendered":"\u30c0\u30d6\u30eb\u30fb\u30d6\u30ed\u30c3\u30af\u30fb\u30a2\u30f3\u30c9\u30fb\u30d6\u30ea\u30fc\u30c9\u30fb\u30d0\u30eb\u30d6\u306f\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u306e\u304b\uff1f"},"content":{"rendered":"<p><a href=\"https:\/\/waltervalves.com\/ja\/products-services\/instrumentation-dbb-valves\/\" data-type=\"link\" data-id=\"https:\/\/waltervalves.com\/products-services\/instrumentation-dbb-valves\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u30c0\u30d6\u30eb\u30d6\u30ed\u30c3\u30af\uff06\u30d6\u30ea\u30fc\u30c9\uff08DBB\uff09\u30d0\u30eb\u30d6 <\/a>\u306f\u3001\u5371\u967a\u306a\u6d41\u4f53\u30d7\u30ed\u30bb\u30b9\u306e\u9694\u96e2\u3068\u6f0f\u308c\u9632\u6b62\u3092\u63d0\u4f9b\u3059\u308b\u914d\u7ba1\u30b7\u30b9\u30c6\u30e0\u306e\u91cd\u8981\u306a\u5b89\u5168\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002\u3053\u306e\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9\u3067\u306f\u3001\u30c0\u30d6\u30eb\u30d6\u30ed\u30c3\u30af\uff06\u30d6\u30ea\u30fc\u30c9\u30d0\u30eb\u30d6\u304c\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u306e\u304b\u3001\u305d\u306e\u4e3b\u8981\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3001\u305d\u3057\u3066\u306a\u305c\u30aa\u30a4\u30eb\/\u30ac\u30b9\u3001\u5316\u5b66\u3001\u305d\u306e\u4ed6\u306e\u30ea\u30b9\u30af\u306e\u9ad8\u3044\u7523\u696d\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u306a\u306e\u304b\u3092\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30c0\u30d6\u30eb\u30d6\u30ed\u30c3\u30af\uff06\u30d6\u30ea\u30fc\u30c9\u30d0\u30eb\u30d6\u304c\u7279\u5b9a\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u306e\u304b\u3092\u7406\u89e3\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u3082\u3001\u7570\u306a\u308b\u30bf\u30a4\u30d7\u3092\u6bd4\u8f03\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u3082\u3001\u3053\u306e\u8a18\u4e8b\u306fDBB\u30d0\u30eb\u30d6\u306e\u6a5f\u80fd\u6027\u306e\u5168\u3066\u306e\u5074\u9762\u3092\u30ab\u30d0\u30fc\u3057\u3066\u3044\u307e\u3059\u3002DBB\u30d0\u30eb\u30d6\u306e\u52d5\u4f5c\u539f\u7406\u3001\u696d\u754c\u6a19\u6e96\u3001\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u3054\u89a7\u4e0b\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:28px\">\u30d6\u30ed\u30c3\u30af\uff06\u30d6\u30ea\u30fc\u30c9\u30d0\u30eb\u30d6\u3068\u30c0\u30d6\u30eb\u30d6\u30ed\u30c3\u30af\uff06\u30d6\u30ea\u30fc\u30c9\u30d0\u30eb\u30d6\u306e\u9055\u3044\u306f\uff1f<\/h2>\n\n\n\n<p>\u30d6\u30ed\u30c3\u30af\u30fb\u30a2\u30f3\u30c9\u30fb\u30d6\u30ea\u30fc\u30c9\u30fb\u30b7\u30b9\u30c6\u30e0\u3068\u30c0\u30d6\u30eb\u30fb\u30d6\u30ed\u30c3\u30af\u30fb\u30a2\u30f3\u30c9\u30fb\u30d6\u30ea\u30fc\u30c9\uff08DBB\uff09\u30b7\u30b9\u30c6\u30e0\u306e\u533a\u5225\u306f\u3001\u6d41\u4f53\u9694\u96e2\u306b\u304a\u3051\u308b\u5b89\u5168\u54f2\u5b66\u306e\u6839\u672c\u7684\u306a\u9055\u3044\u3092\u8868\u3057\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"410\" src=\"https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/The-difference-between-shut-off-exhaust-valve-and-double-shut-off-exhaust-valve.webp\" alt=\"The-difference-between-shut-off-exhaust-valve-and-double-shut-off-exhaust-valve\" class=\"wp-image-5227\" style=\"width:566px;height:auto\" srcset=\"https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/The-difference-between-shut-off-exhaust-valve-and-double-shut-off-exhaust-valve.webp 800w, https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/The-difference-between-shut-off-exhaust-valve-and-double-shut-off-exhaust-valve-300x154.webp 300w, https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/The-difference-between-shut-off-exhaust-valve-and-double-shut-off-exhaust-valve-768x394.webp 768w, https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/The-difference-between-shut-off-exhaust-valve-and-double-shut-off-exhaust-valve-18x9.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>\u6a19\u6e96\u7684\u306a\u30d6\u30ed\u30c3\u30af\uff06\u30d6\u30ea\u30fc\u30c9\u69cb\u6210\u306f\u3001\u30d6\u30ea\u30fc\u30c9\u30dd\u30fc\u30c8\u3068\u7d44\u307f\u5408\u308f\u3055\u308c\u305f\u5358\u4e00\u30d0\u30eb\u30d6\u3092\u901a\u3057\u3066\u57fa\u672c\u7684\u306a\u9694\u96e2\u3092\u63d0\u4f9b\u3057\u3001\u4e0b\u6d41\u306e\u6e1b\u5727\u3092\u53ef\u80fd\u306b\u3057\u306a\u304c\u3089\u30d7\u30ed\u30bb\u30b9\u6d41\u4f53\u306b\u5bfe\u3057\u3066\u4e00\u3064\u306e\u30d0\u30ea\u30a2\u3092\u4f5c\u308a\u307e\u3059\u3002\u30ea\u30b9\u30af\u306e\u4f4e\u3044\u5a92\u4f53\u3092\u4f7f\u7528\u3059\u308b\u975e\u81e8\u754c\u7528\u9014\u3067\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u30b7\u30f3\u30d7\u30eb\u306a\u69cb\u6210\u3067\u5341\u5206\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u30c0\u30d6\u30eb\u30fb\u30d6\u30ed\u30c3\u30af\u30fb\u30a2\u30f3\u30c9\u30fb\u30d6\u30ea\u30fc\u30c9\u30fb\u30b7\u30b9\u30c6\u30e0\u306f\u30012\u3064\u306e\u5b8c\u5168\u306b\u72ec\u7acb\u3057\u305f\u30a2\u30a4\u30bd\u30ec\u30fc\u30b7\u30e7\u30f3\u30fb\u30d0\u30eb\u30d6\u3092\u76f4\u5217\u306b\u7d44\u307f\u8fbc\u307f\u3001\u305d\u306e\u9593\u306b\u5171\u6709\u306e\u30d6\u30ea\u30fc\u30c9\u30fb\u30d0\u30eb\u30d6\u3092\u6226\u7565\u7684\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u3067\u3001\u3053\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3092\u3088\u308a\u9ad8\u3044\u5b89\u5168\u57fa\u6e96\u3078\u3068\u9ad8\u3081\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8a2d\u8a08\u306b\u3088\u308a\u30012\u3064\u306e\u30dd\u30b8\u30c6\u30a3\u30d6\u30fb\u30d0\u30ea\u30a2\u304c\u305d\u308c\u305e\u308c\u72ec\u7acb\u3057\u3066\u3069\u3061\u3089\u304b\u306e\u65b9\u5411\u304b\u3089\u306e\u5168\u30b7\u30b9\u30c6\u30e0\u5727\u529b\u3092\u5c01\u3058\u8fbc\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u30011\u3064\u306e\u30d0\u30eb\u30d6\u304c\u6545\u969c\u3057\u305f\u5834\u5408\u306b\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u30fb\u30b7\u30fc\u30eb\u3092\u52b9\u679c\u7684\u306b\u63d0\u4f9b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>API 6D \u898f\u683c\u3067\u306f DBB \u30d0\u30eb\u30d6\u306f 2 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class=\"wp-block-heading\" style=\"font-size:28px\">DBB\u30b7\u30b9\u30c6\u30e0\u306e\u30d6\u30ea\u30fc\u30c9\u30d0\u30eb\u30d6\u306f\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u306e\u304b\uff1f<\/h2>\n\n\n\n<p>\u30c0\u30d6\u30eb\u30fb\u30d6\u30ed\u30c3\u30af\u30fb\u30a2\u30f3\u30c9\u30fb\u30d6\u30ea\u30fc\u30c9\u30fb\u30a2\u30c3\u30bb\u30f3\u30d6\u30ea\u30fc\u306e\u30d6\u30ea\u30fc\u30c9\u30d0\u30eb\u30d6\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u8a3a\u65ad\u5fc3\u81d3\u90e8\u3067\u3042\u308a\u3001\u5b89\u5168\u30bb\u30f3\u30c1\u30cd\u30eb\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u30022\u3064\u306e\u30d7\u30e9\u30a4\u30de\u30ea\u30fc\u30fb\u30a2\u30a4\u30bd\u30ec\u30fc\u30b7\u30e7\u30f3\u30fb\u30d0\u30eb\u30d6\u306e\u9593\u306b\u914d\u7f6e\u3055\u308c\u305f\u3053\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u76f4\u5217\u306b\u914d\u7f6e\u3055\u308c\u305f2\u3064\u306e\u30d0\u30eb\u30d6\u3060\u3051\u3092\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30c8\u3067\u691c\u8a3c\u53ef\u80fd\u306a\u30a2\u30a4\u30bd\u30ec\u30fc\u30b7\u30e7\u30f3\u30fb\u30b7\u30b9\u30c6\u30e0\u306b\u5909\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"462\" src=\"https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Relief-valve-in-double-block-and-bleed-system.webp\" alt=\"Relief-valve-in-double-block-and-bleed-system\" class=\"wp-image-5231\" style=\"width:608px;height:auto\" srcset=\"https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Relief-valve-in-double-block-and-bleed-system.webp 800w, https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Relief-valve-in-double-block-and-bleed-system-300x173.webp 300w, https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Relief-valve-in-double-block-and-bleed-system-768x444.webp 768w, https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Relief-valve-in-double-block-and-bleed-system-18x10.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>\u30d6\u30ea\u30fc\u30c9\u30dd\u30fc\u30c8\u3067\u691c\u51fa\u3055\u308c\u305f\u6d41\u4f53\u3084\u5727\u529b\u306f\u3001\u7247\u65b9\u307e\u305f\u306f\u4e21\u65b9\u306e\u30d6\u30ed\u30c3\u30af\u30d0\u30eb\u30d6\u306b\u6f5c\u5728\u7684\u306a\u6f0f\u308c\u304c\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u78ba\u8a8d\u6a5f\u80fd\u306f\u3001\u4f5c\u696d\u958b\u59cb\u524d\u306b\u7d76\u5bfe\u7684\u306a\u9694\u96e2\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u4f5c\u696d\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30d6\u30ea\u30fc\u30c9\u30d0\u30eb\u30d6\u306f\u305d\u306e\u8a3a\u65ad\u7684\u5f79\u5272\u306b\u3068\u3069\u307e\u3089\u305a\u3001\u5fc5\u8981\u4e0d\u53ef\u6b20\u306a\u5727\u529b\u7ba1\u7406\u6a5f\u80fd\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u30c7\u30e5\u30a2\u30eb\u30b7\u30fc\u30eb\u9593\u306b\u9589\u3058\u8fbc\u3081\u3089\u308c\u305f\u6d41\u4f53\u306e\u71b1\u81a8\u5f35\u3092\u5b89\u5168\u306b\u9003\u304c\u3057\u3001\u5371\u967a\u306a\u5727\u529b\u4e0a\u6607\u3092\u9632\u304e\u307e\u3059\u3002\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306e\u969b\u306b\u306f\u3001\u30b7\u30fc\u30eb\u9593\u7a7a\u6d1e\u306e\u5b8c\u5168\u306a\u6e1b\u5727\u3068\u6392\u51fa\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30d6\u30ea\u30fc\u30c9\u30d0\u30eb\u30d6\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u9593\u306e\u76f8\u4e92\u6c5a\u67d3\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u969b\u306e\u6d41\u4f53\u5206\u6790\u7528\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30dd\u30a4\u30f3\u30c8\u3068\u3057\u3066\u3082\u6a5f\u80fd\u3057\u307e\u3059\u3002\u6280\u8853\u8005\u306f\u307e\u305a\u4e0a\u6d41\u5074\u306e\u9694\u96e2\u30d0\u30eb\u30d6\u3092\u9589\u3058\u3001\u30d6\u30ea\u30fc\u30c9\u30fb\u30dd\u30fc\u30c8\u3092\u901a\u3057\u3066\u30b7\u30fc\u30eb\u306e\u5b8c\u5168\u6027\u3092\u78ba\u8a8d\u3057\u3001\u305d\u308c\u304b\u3089\u4e0b\u6d41\u5074\u306e\u30d0\u30eb\u30d6\u3092\u9589\u3058\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u8ad6\u306b\u3088\u308a\u3001\u5404\u30b7\u30fc\u30eb\u306e\u6027\u80fd\u3092\u9806\u756a\u306b\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:28px\">\u5de5\u696d\u7528\u9014\u3067\u30c0\u30d6\u30eb\u30fb\u30d6\u30ed\u30c3\u30af\u30fb\u30a2\u30f3\u30c9\u30fb\u30d6\u30ea\u30fc\u30c9\u304c\u5fc5\u8981\u306a\u5834\u5408\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>\u30c0\u30d6\u30eb\u30d6\u30ed\u30c3\u30af\uff06\u30d6\u30ea\u30fc\u30c9\u30d0\u30eb\u30d6\u306f\u3001\u305d\u306e\u6bd4\u985e\u306a\u304d\u5b89\u5168\u6027\u306b\u3088\u308a\u3001\u591a\u304f\u306e\u30cf\u30a4\u30ea\u30b9\u30af\u306a\u7523\u696d\u30b7\u30ca\u30ea\u30aa\u306b\u304a\u3051\u308b\u9694\u96e2\u306e\u305f\u3081\u306e\u30b4\u30fc\u30eb\u30c9\u30b9\u30bf\u30f3\u30c0\u30fc\u30c9\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"506\" src=\"https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Double-block-exhaust-valve-industrial-application.webp\" alt=\"Double-block-exhaust-valve-industrial-application\" class=\"wp-image-5228\" style=\"width:575px;height:auto\" srcset=\"https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Double-block-exhaust-valve-industrial-application.webp 800w, https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Double-block-exhaust-valve-industrial-application-300x190.webp 300w, https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Double-block-exhaust-valve-industrial-application-768x486.webp 768w, https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Double-block-exhaust-valve-industrial-application-18x12.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" 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6D\u3001ISO 14313\u3001ASME 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style=\"font-size:28px\">DBB\u30d0\u30eb\u30d6\u306e\u4e3b\u306a\u9078\u5b9a\u57fa\u6e96<\/h2>\n\n\n\n<p>\u9069\u5207\u306a\u30c0\u30d6\u30eb\u30d6\u30ed\u30c3\u30af\uff06\u30d6\u30ea\u30fc\u30c9\u30d0\u30eb\u30d6\u3092\u9078\u629e\u3059\u308b\u306b\u306f\u3001\u6700\u9069\u306a\u6027\u80fd\u3068\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u3001\u8907\u6570\u306e\u6280\u8853\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u614e\u91cd\u306b\u8a55\u4fa1\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u5727\u529b\u3068\u6e29\u5ea6\u306e\u5b9a\u683c\u3092\u5fb9\u5e95\u7684\u306b\u8a55\u4fa1\u3057\u3001\u30d7\u30ed\u30bb\u30b9\u6761\u4ef6\u3068\u306e\u9069\u5408\u6027\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u30a8\u30e9\u30b9\u30c8\u30de\u30fc\u30b7\u30fc\u30eb\u3067\u5341\u5206\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u8150\u98df\u6027\u3084\u9ad8\u6e29\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u901a\u5e38\u30e1\u30bf\u30eb\u30b7\u30fc\u30eb\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"571\" src=\"https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Key-Selection-Criteria-for-Double-Block-and-Bleed-Valves-DBB.webp\" alt=\"Key-Selection-Criteria-for-Double-Block-and-Bleed-Valves-(DBB)\" class=\"wp-image-5230\" style=\"width:557px;height:auto\" srcset=\"https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Key-Selection-Criteria-for-Double-Block-and-Bleed-Valves-DBB.webp 1000w, https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Key-Selection-Criteria-for-Double-Block-and-Bleed-Valves-DBB-300x171.webp 300w, https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Key-Selection-Criteria-for-Double-Block-and-Bleed-Valves-DBB-768x439.webp 768w, https:\/\/waltervalves.com\/wp-content\/uploads\/2025\/08\/Key-Selection-Criteria-for-Double-Block-and-Bleed-Valves-DBB-18x10.webp 18w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" 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