{"id":6024,"date":"2026-10-02T02:04:43","date_gmt":"2026-10-01T18:04:43","guid":{"rendered":"https:\/\/www.sj-gauge.com\/?p=6024"},"modified":"2026-10-02T05:53:14","modified_gmt":"2026-10-01T21:53:14","slug":"pressure-gauge-thread-connection-leak","status":"publish","type":"post","link":"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-connection-leak\/","title":{"rendered":"\u5727\u529b\u8a08\u306e\u53d6\u308a\u4ed8\u3051\u5f8c\u306b\u6f0f\u308c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\uff1a5\u3064\u306e\u63a5\u7d9a\u30c1\u30a7\u30c3\u30af"},"content":{"rendered":"<p>\u8a2d\u7f6e\u5f8c\u306b\u5727\u529b\u8a08\u304b\u3089\u30ac\u30b9\u3084\u6db2\u4f53\u304c\u6f0f\u308c\u308b\u5834\u5408\u3001\u5fc5\u305a\u3057\u3082\u6e2c\u5b9a\u7d20\u5b50\u306b\u6b20\u9665\u304c\u3042\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u306d\u3058\u5c71\u306e\u4e0d\u9069\u5408\u3001\u4e0d\u9069\u5207\u306a\u30b7\u30fc\u30eb\u65b9\u6cd5\u3001\u30ac\u30b9\u30b1\u30c3\u30c8\u306e\u640d\u50b7\u3001\u7de0\u3081\u4ed8\u3051\u4e0d\u8db3\u306a\u3069\u304c\u539f\u56e0\u3067\u3001\u30d7\u30ed\u30bb\u30b9\u63a5\u7d9a\u90e8\u304b\u3089\u6f0f\u308c\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30b7\u30fc\u30eb\u30c6\u30fc\u30d7\u3092\u8ffd\u52a0\u3057\u305f\u308a\u3001\u7de0\u3081\u4ed8\u3051\u3092\u5f37\u304f\u3057\u305f\u308a\u3057\u3066\u3082\u3001\u554f\u984c\u306f\u89e3\u6c7a\u3055\u308c\u305a\u306b\u96a0\u308c\u3066\u3057\u307e\u3046\u3060\u3051\u3067\u3059\u3002.<\/p>\n\n\n\n<p>\u63a5\u7d9a\u90e8\u306b\u89e6\u308c\u305f\u308a\u7de9\u3081\u305f\u308a\u3059\u308b\u524d\u306b\u3001\u52a0\u5727\u3092\u505c\u6b62\u3057\u3001\u5727\u529b\u6e90\u3092\u906e\u65ad\u3057\u3001\u6a5f\u5668\u306e\u624b\u9806\u306b\u5f93\u3063\u3066\u5b89\u5168\u306b\u6e1b\u5727\u3001\u6392\u6c34\u3001\u51b7\u5374\u3092\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u5727\u529b\u304c\u304b\u304b\u3063\u305f\u72b6\u614b\u3067\u6f0f\u308c\u3066\u3044\u308b\u63a5\u7d9a\u90e8\u3092\u7de0\u3081\u4ed8\u3051\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u906e\u65ad\u5f01\u3092\u9589\u3058\u308b\u3068\u3001\u5727\u529b\u8a08\u306b\u5727\u529b\u304c\u9589\u3058\u8fbc\u3081\u3089\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u30c0\u30a4\u30e4\u30eb\u304c\u30bc\u30ed\u306b\u306a\u3063\u3066\u3044\u308b\u3060\u3051\u3067\u306f\u3001\u63a5\u7d9a\u90e8\u3092\u958b\u3051\u3066\u3082\u5b89\u5168\u3067\u3042\u308b\u3068\u3044\u3046\u8a3c\u660e\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\" style=\"width:640px;max-width:100%;margin:32px auto\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1448\" height=\"1086\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/pressure-gauge-valve-connection-field.png\" alt=\"Pressure gauge and valve manifold connections on an industrial installation\" class=\"wp-image-6022\" sizes=\"(max-width: 640px) 100vw, 640px\" loading=\"eager\" style=\"display:block;width:100%;height:auto;aspect-ratio:3\/2;object-fit:cover;object-position:center 80%\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/pressure-gauge-valve-connection-field.png 1448w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/pressure-gauge-valve-connection-field-300x225.png 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/pressure-gauge-valve-connection-field-1024x768.png 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/pressure-gauge-valve-connection-field-768x576.png 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/pressure-gauge-valve-connection-field-16x12.png 16w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/pressure-gauge-valve-connection-field-600x450.png 600w\" \/><figcaption class=\"wp-element-caption\" style=\"text-align:center\">\u56f31\uff5c\u30b2\u30fc\u30b8\u63a5\u7d9a\u90e8\u3068\u96a3\u63a5\u3059\u308b\u30d0\u30eb\u30d6\u7d99\u624b\u3092\u793a\u3059\u73fe\u5834\u8a2d\u7f6e\u4f8b\u3002\u3053\u306e\u5199\u771f\u306f\u914d\u7f6e\u3092\u793a\u3059\u3082\u306e\u3067\u3042\u308a\u3001\u6f0f\u6d29\u304c\u78ba\u8a8d\u3055\u308c\u305f\u3053\u3068\u3092\u793a\u3059\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002.<\/figcaption><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u76ee\u6b21\u306e\u8868\u793a\/\u975e\u8868\u793a\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u30c8\u30b0\u30eb<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #7b1e1c;color:#7b1e1c\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #7b1e1c;color:#7b1e1c\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-connection-leak\/#1-confirm-that-the-thread-standards-match\" >1. \u306d\u3058\u898f\u683c\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-connection-leak\/#2-identify-where-the-connection-should-seal\" >2. \u63a5\u7d9a\u90e8\u3092\u5bc6\u9589\u3059\u3079\u304d\u7b87\u6240\u3092\u7279\u5b9a\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-connection-leak\/#3-inspect-the-gasket-and-sealing-faces\" >3. \u30ac\u30b9\u30b1\u30c3\u30c8\u3068\u30b7\u30fc\u30eb\u9762\u3092\u70b9\u691c\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-connection-leak\/#4-check-the-tape-or-thread-sealant\" >4. \u30c6\u30fc\u30d7\u307e\u305f\u306f\u306d\u3058\u30b7\u30fc\u30eb\u5264\u3092\u78ba\u8a8d\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-connection-leak\/#5-check-tightening-and-recommissioning\" >5. \u7de0\u3081\u4ed8\u3051\u3068\u518d\u7de0\u3081\u4ed8\u3051\u3092\u78ba\u8a8d\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-connection-leak\/#international-standards-to-check\" >\u78ba\u8a8d\u3059\u3079\u304d\u56fd\u969b\u57fa\u6e96<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-connection-leak\/#frequently-asked-questions\" >\u3088\u304f\u3042\u308b\u8cea\u554f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-connection-leak\/#correct-the-cause-before-returning-to-service\" >\u904b\u7528\u518d\u958b\u524d\u306b\u539f\u56e0\u3092\u662f\u6b63\u3057\u3066\u304f\u3060\u3055\u3044<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"check-thread-standard\"><span class=\"ez-toc-section\" id=\"1-confirm-that-the-thread-standards-match\"><\/span>1. \u306d\u3058\u898f\u683c\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30b2\u30fc\u30b8\u3068\u76f8\u624b\u5074\u306e\u7d99\u624b\u306e\u4e21\u65b9\u306b\u3064\u3044\u3066\u3001\u63a5\u7d9a\u4ed5\u69d8\uff08\u306d\u3058\u898f\u683c\u3001\u516c\u79f0\u30b5\u30a4\u30ba\u3001\u30aa\u30b9\u307e\u305f\u306f\u30e1\u30b9\u306e\u5f62\u72b6\uff09\u3092\u3059\u3079\u3066\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002NPT\u3001R\/Rc\/Rp\u3001G\/BSPP\u306f\u3001\u516c\u79f0\u30a4\u30f3\u30c1\u30b5\u30a4\u30ba\u304c\u540c\u3058\u3088\u3046\u306b\u898b\u3048\u3066\u3082\u4e92\u63db\u6027\u304c\u3042\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u6570\u56de\u8ee2\u7de0\u3081\u305f\u3060\u3051\u3067\u306f\u3001\u4e92\u63db\u6027\u306e\u3042\u308b\u3001\u307e\u305f\u306f\u6c17\u5bc6\u6027\u306e\u9ad8\u3044\u63a5\u7d9a\u90e8\u306f\u5f62\u6210\u3055\u308c\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<p>\u30b7\u30b9\u30c6\u30e0\u304c\u5b89\u5168\u306b\u306a\u3063\u305f\u5f8c\u3001\u306d\u3058\u5c71\u306e\u305a\u308c\u3001\u306d\u3058\u5c71\u306e\u9802\u90e8\u306e\u6f70\u308c\u3001\u305d\u306e\u4ed6\u306e\u640d\u50b7\u304c\u306a\u3044\u304b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u640d\u50b7\u3057\u305f\u90e8\u54c1\u306f\u3001\u4f59\u5206\u306a\u30c6\u30fc\u30d7\u3067\u6b20\u9665\u3092\u57cb\u3081\u3088\u3046\u3068\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4ea4\u63db\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4ea4\u63db\u7528\u6a5f\u5668\u3068\u3057\u3066\u306f\u3001 <a href=\"https:\/\/www.sj-gauge.com\/ja\/product\/prss\/\">PRSS\u30b9\u30c6\u30f3\u30ec\u30b9\u88fd\u5727\u529b\u8a08<\/a>, \u30c0\u30a4\u30e4\u30eb\u30b5\u30a4\u30ba\u3060\u3051\u3067\u9078\u629e\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u6ce8\u6587\u3057\u305f\u63a5\u7d9a\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u65e2\u5b58\u306e\u7d99\u624b\u3068\u7167\u3089\u3057\u5408\u308f\u305b\u3066\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"check-sealing-location\"><span class=\"ez-toc-section\" id=\"2-identify-where-the-connection-should-seal\"><\/span>2. \u63a5\u7d9a\u90e8\u3092\u5bc6\u9589\u3059\u3079\u304d\u7b87\u6240\u3092\u7279\u5b9a\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>NPT\u30c6\u30fc\u30d1\u30fc\u63a5\u7d9a\u3067\u306f\u3001\u901a\u5e38\u3001\u30e1\u30fc\u30ab\u30fc\u6307\u5b9a\u306e\u9069\u5207\u306a\u306d\u3058\u30b7\u30fc\u30eb\u5264\u307e\u305f\u306f\u30c6\u30fc\u30d7\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002ISO 7-1\u63a5\u7d9a\u3067\u306f\u3001R\u30c6\u30fc\u30d1\u30fc\u5916\u306d\u3058\u3068Rc\u30c6\u30fc\u30d1\u30fc\u5185\u306d\u3058\u307e\u305f\u306fRp\u5e73\u884c\u5185\u306d\u3058\u3092\u4f7f\u7528\u3057\u3001\u306d\u3058\u90e8\u306b\u6c17\u5bc6\u6027\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002\u6307\u5b9a\u3055\u308c\u305f\u5d4c\u5408\u7d44\u307f\u5408\u308f\u305b\u3068\u30b7\u30fc\u30eb\u6750\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<p>ISO 228-1 \u306b\u57fa\u3065\u304f G\/BSPP \u5e73\u884c\u306d\u3058\u306f\u3001\u306d\u3058\u90e8\u306b\u5727\u529b\u30b7\u30fc\u30eb\u3092\u63d0\u4f9b\u3057\u307e\u305b\u3093\u3002\u30b7\u30fc\u30eb\u306f\u3001\u30ac\u30b9\u30b1\u30c3\u30c8\u3001O \u30ea\u30f3\u30b0\u3001\u307e\u305f\u306f\u63a5\u7d9a\u90e8\u306b\u7d44\u307f\u8fbc\u307e\u308c\u305f\u30b7\u30fc\u30eb\u9762\u306a\u3069\u3001\u5225\u306e\u5834\u6240\u3067\u5f62\u6210\u3055\u308c\u307e\u3059\u3002G \u306d\u3058\u306b\u30c6\u30fc\u30d7\u3092\u5dfb\u3044\u3066\u3082\u3001\u6b20\u843d\u3057\u3066\u3044\u308b\u7aef\u90e8\u30b7\u30fc\u30eb\u3092\u88dc\u3046\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u7279\u306b\u3001Rp \u3068 G \u306f\u3069\u3061\u3089\u3082\u5e73\u884c\u306a\u5185\u306d\u3058\u5f62\u72b6\u3067\u3059\u304c\u3001\u305d\u308c\u3089\u306e\u30b7\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306f\u540c\u4e00\u3068\u3057\u3066\u6271\u3063\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"check-gasket-face\"><span class=\"ez-toc-section\" id=\"3-inspect-the-gasket-and-sealing-faces\"><\/span>3. \u30ac\u30b9\u30b1\u30c3\u30c8\u3068\u30b7\u30fc\u30eb\u9762\u3092\u70b9\u691c\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30ac\u30b9\u30b1\u30c3\u30c8\u307e\u305f\u306fO\u30ea\u30f3\u30b0\u3067\u30b7\u30fc\u30eb\u3059\u308b\u63a5\u7d9a\u90e8\u306b\u3064\u3044\u3066\u306f\u3001\u30b7\u30fc\u30eb\u304c\u88c5\u7740\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3001\u30b5\u30a4\u30ba\u304c\u9069\u5207\u3067\u3042\u308b\u3053\u3068\u3001\u8a2d\u8a08\u3069\u304a\u308a\u306b\u6b63\u3057\u304f\u88c5\u7740\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30b7\u30fc\u30eb\u304c\u6b20\u843d\u3057\u3066\u3044\u305f\u308a\u3001\u5e73\u3089\u306b\u306a\u3063\u3066\u3044\u305f\u308a\u3001\u786c\u5316\u3057\u3066\u3044\u305f\u308a\u3001\u640d\u50b7\u3057\u3066\u3044\u305f\u308a\u3059\u308b\u3068\u3001\u306d\u3058\u304c\u5b8c\u5168\u306b\u7de0\u3081\u4ed8\u3051\u3089\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u3066\u3082\u6f0f\u308c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30b7\u30fc\u30eb\u9762\u306b\u6c5a\u308c\u3001\u30d0\u30ea\u3001\u50b7\u304c\u3042\u308b\u3068\u3001\u9069\u5207\u306a\u63a5\u89e6\u304c\u59a8\u3052\u3089\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u30d7\u30ed\u30bb\u30b9\u5a92\u4f53\u3001\u5727\u529b\u3001\u6e29\u5ea6\u306b\u9069\u3057\u305f\u30b7\u30fc\u30eb\u6750\u3092\u9078\u629e\u3057\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u624b\u9806\u306b\u5f93\u3063\u3066\u4ea4\u63db\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4e0d\u9069\u5207\u306a\u63a5\u7d9a\u3092\u88dc\u3046\u305f\u3081\u306b\u3001\u4e88\u5099\u306e\u30ac\u30b9\u30b1\u30c3\u30c8\u3092\u91cd\u306d\u305f\u308a\u3001\u76ee\u306b\u898b\u3048\u3066\u640d\u50b7\u3057\u305f\u30b7\u30fc\u30eb\u3092\u518d\u5229\u7528\u3057\u305f\u308a\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\" style=\"width:640px;max-width:100%;margin:32px auto\"><img loading=\"lazy\" decoding=\"async\" width=\"1108\" height=\"1477\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-pressure-gauge-connection-field-detail.jpg\" alt=\"Rear pressure gauge connections and hexagonal fittings on a valve assembly\" class=\"wp-image-6023\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" style=\"display:block;width:100%;height:auto;aspect-ratio:3\/2;object-fit:cover;object-position:center 85%\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-pressure-gauge-connection-field-detail.jpg 1108w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-pressure-gauge-connection-field-detail-225x300.jpg 225w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-pressure-gauge-connection-field-detail-768x1024.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-pressure-gauge-connection-field-detail-9x12.jpg 9w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-pressure-gauge-connection-field-detail-300x400.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/10\/sj-pressure-gauge-connection-field-detail-600x800.jpg 600w\" \/><figcaption class=\"wp-element-caption\" style=\"text-align:center\">\u56f32\uff5c\u5b9f\u969b\u306e\u8a2d\u7f6e\u4f8b\u306b\u304a\u3051\u308b\u63a5\u7d9a\u90e8\u306e\u8a73\u7d30\u3002\u30b7\u30fc\u30eb\u6750\u306e\u9078\u5b9a\u3084\u7de0\u3081\u4ed8\u3051\u3092\u884c\u3046\u524d\u306b\u3001\u5b9f\u969b\u306e\u306d\u3058\u5c71\u3068\u30b7\u30fc\u30eb\u6750\u306e\u8a2d\u8a08\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"check-sealing-material\"><span class=\"ez-toc-section\" id=\"4-check-the-tape-or-thread-sealant\"><\/span>4. \u30c6\u30fc\u30d7\u307e\u305f\u306f\u306d\u3058\u30b7\u30fc\u30eb\u5264\u3092\u78ba\u8a8d\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u306d\u3058\u90e8\u306e\u30b7\u30fc\u30eb\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u7d99\u624b\u304a\u3088\u3073\u30b7\u30fc\u30e9\u30f3\u30c8\u30e1\u30fc\u30ab\u30fc\u306e\u65bd\u5de5\u624b\u9806\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u5dfb\u304d\u4ed8\u3051\u65b9\u5411\u304c\u9593\u9055\u3063\u3066\u3044\u305f\u308a\u3001\u6750\u6599\u304c\u5c11\u306a\u3059\u304e\u305f\u308a\u3059\u308b\u3068\u3001\u6f0f\u308c\u306e\u539f\u56e0\u3068\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u9006\u306b\u3001\u6750\u6599\u304c\u591a\u3059\u304e\u308b\u3068\u3001\u306d\u3058\u8fbc\u307f\u304c\u59a8\u3052\u3089\u308c\u305f\u308a\u3001\u5727\u529b\u30dd\u30fc\u30c8\u306b\u5165\u308a\u8fbc\u3093\u3060\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u306d\u3058\u90e8\u3084\u4f7f\u7528\u6761\u4ef6\u306b\u9069\u3057\u305f\u30c6\u30fc\u30d7\u306e\u539a\u3055\u3084\u5dfb\u304d\u6570\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<p>\u4e00\u822c\u7684\u306a\u914d\u7ba1\u7528\u30b7\u30fc\u30e9\u30f3\u30c8\u304c\u9178\u7d20\u3001\u98df\u54c1\u52a0\u5de5\u3001\u307e\u305f\u306f\u5316\u5b66\u85ac\u54c1\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u5fc5\u8981\u306a\u5a92\u4f53\u9069\u5408\u6027\u3001\u6e05\u6d44\u5ea6\u3001\u627f\u8a8d\u3001\u304a\u3088\u3073\u6e29\u5ea6\u3068\u5727\u529b\u306e\u5236\u9650\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u53e4\u3044\u30b7\u30fc\u30ea\u30f3\u30b0\u6750\u306e\u6b8b\u7559\u7269\u306f\u3001\u6a5f\u5668\u5185\u90e8\u306b\u7570\u7269\u304c\u5165\u3089\u306a\u3044\u3088\u3046\u306b\u6ce8\u610f\u3057\u306a\u304c\u3089\u3001\u6b63\u898f\u306e\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6642\u306b\u9664\u53bb\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"check-tightening\"><span class=\"ez-toc-section\" id=\"5-check-tightening-and-recommissioning\"><\/span>5. \u7de0\u3081\u4ed8\u3051\u3068\u518d\u7de0\u3081\u4ed8\u3051\u3092\u78ba\u8a8d\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30d7\u30ed\u30bb\u30b9\u63a5\u7d9a\u90e8\u306e\u6307\u5b9a\u3055\u308c\u305f\u30ec\u30f3\u30c1\u7528\u5e73\u9762\u90e8\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30b2\u30fc\u30b8\u30b1\u30fc\u30b9\u3092\u3066\u3053\u3068\u3057\u3066\u56de\u3055\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u7de0\u3081\u4ed8\u3051\u304c\u4e0d\u5341\u5206\u3060\u3068\u63a5\u7d9a\u90e8\u304c\u5bc6\u9589\u3055\u308c\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u9006\u306b\u7de0\u3081\u4ed8\u3051\u3059\u304e\u308b\u3068\u306d\u3058\u5c71\u3001\u30b7\u30fc\u30eb\u3001\u307e\u305f\u306f\u30bd\u30b1\u30c3\u30c8\u304c\u640d\u50b7\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u5b9f\u969b\u306e\u63a5\u7d9a\u6750\u6599\u3068\u8a2d\u8a08\u306b\u3064\u3044\u3066\u306f\u3001\u30e1\u30fc\u30ab\u30fc\u6307\u5b9a\u306e\u30c8\u30eb\u30af\u307e\u305f\u306f\u7d44\u307f\u7acb\u3066\u624b\u9806\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<p>\u6545\u969c\u3092\u4fee\u6b63\u3057\u305f\u5f8c\u3001\u6a5f\u5668\u306e\u627f\u8a8d\u6e08\u307f\u6f0f\u6d29\u8a66\u9a13\u3068\u5236\u5fa1\u3055\u308c\u305f\u5fa9\u5e30\u624b\u9806\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u6f0f\u6d29\u304c\u518d\u767a\u3059\u308b\u5834\u5408\u306f\u3001\u30c8\u30eb\u30af\u3092\u7e70\u308a\u8fd4\u3057\u52a0\u3048\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u505c\u6b62\u3057\u3066\u63a5\u7d9a\u3092\u518d\u8a55\u4fa1\u3057\u307e\u3059\u3002\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u9694\u96e2\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u9069\u5207\u306a\u30a2\u30af\u30bb\u30b5\u30ea\u306a\u3069\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002 <a href=\"https:\/\/www.sj-gauge.com\/ja\/product\/pra-bv\/\">PRA-BV\u5727\u529b\u8a08\u30b3\u30c3\u30af<\/a>; \u63a5\u7d9a\u304a\u3088\u3073\u4f7f\u7528\u5236\u9650\u306f\u30b7\u30b9\u30c6\u30e0\u306b\u9069\u5408\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u9694\u96e2\u3057\u3066\u3082\u9589\u3058\u8fbc\u3081\u3089\u308c\u305f\u5727\u529b\u306f\u9664\u53bb\u3055\u308c\u306a\u3044\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"thread-standards\"><span class=\"ez-toc-section\" id=\"international-standards-to-check\"><\/span>\u78ba\u8a8d\u3059\u3079\u304d\u56fd\u969b\u57fa\u6e96<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b1201-pipe-threads-general-purpose-inch\">ASME B1.20.1-2013\uff08R2018\uff09<\/a>\u6c4e\u7528\u30a4\u30f3\u30c1\u7ba1\u306d\u3058\uff08NPT\u3092\u542b\u3080\uff09\u306e\u5bf8\u6cd5\u3068\u30b2\u30fc\u30b8\u3002\u6307\u5b9a\u3055\u308c\u305f\u306d\u3058\u306e\u5f62\u72b6\u3068\u30b5\u30a4\u30ba\u3092\u78ba\u8a8d\u3059\u308b\u969b\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.iso.org\/standard\/20819.html\">ISO 7-1:1994<\/a>, Cor.1:2007: R\u3001Rc\u3001Rp\u30b7\u30b9\u30c6\u30e0\u3092\u542b\u3080\u3001\u306d\u3058\u90e8\u3067\u5727\u529b\u5bc6\u9589\u3092\u884c\u3046\u7d99\u624b\u7528\u306e\u30d1\u30a4\u30d7\u306d\u3058\u3002.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.iso.org\/standard\/33777.html\">ISO 228-1:2000<\/a>\uff1a\u306d\u3058\u5c71\u306b\u6c17\u5bc6\u63a5\u5408\u90e8\u3092\u8a2d\u3051\u306a\u3044\u914d\u7ba1\u306d\u3058\u3002G\u63a5\u7d9a\u306e\u5834\u5408\u306f\u3001\u5225\u9014\u30b7\u30fc\u30eb\u6a5f\u69cb\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u53c2\u8003\u6587\u732e\u306f\u63a5\u7d9a\u30b7\u30b9\u30c6\u30e0\u3092\u7279\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u304c\u3001\u3053\u308c\u3089\u3092\u5f15\u7528\u3057\u3066\u3082\u88fd\u54c1\u306e\u8a8d\u8a3c\u3084\u6a5f\u5668\u30e1\u30fc\u30ab\u30fc\u306e\u8a2d\u7f6e\u304a\u3088\u3073\u6f0f\u6d29\u8a66\u9a13\u624b\u9806\u306b\u53d6\u3063\u3066\u4ee3\u308f\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u4ed5\u69d8\u66f8\u3068\u7167\u3089\u3057\u5408\u308f\u305b\u3066\u3001\u8a72\u5f53\u3059\u308b\u7248\u3068\u8981\u4ef6\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"connection-leak-faq\"><span class=\"ez-toc-section\" id=\"frequently-asked-questions\"><\/span>\u3088\u304f\u3042\u308b\u8cea\u554f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u534a\u56de\u8ee2\u307b\u3069\u7de0\u3081\u4ed8\u3051\u308c\u3070\u3001\u6f0f\u308c\u306f\u6b62\u307e\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p>\u5727\u529b\u3092\u304b\u3051\u305f\u72b6\u614b\u3067\u7de0\u3081\u76f4\u3055\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u307e\u305a\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3057\u3001\u6b21\u306b\u306d\u3058\u306e\u9069\u5408\u6027\u3001\u30b7\u30fc\u30eb\u65b9\u6cd5\u3001\u304a\u3088\u3073\u90e8\u54c1\u306e\u72b6\u614b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u904e\u5ea6\u306e\u529b\u3092\u52a0\u3048\u308b\u3068\u63a5\u7d9a\u90e8\u304c\u640d\u50b7\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u4ee5\u4e0a\u306e\u7de0\u3081\u4ed8\u3051\u306f\u3001\u5fc5\u305a\u88fd\u9020\u5143\u306e\u624b\u9806\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u53e4\u3044\u30ac\u30b9\u30b1\u30c3\u30c8\u306f\u518d\u5229\u7528\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p>\u30b7\u30fc\u30eb\u30e1\u30fc\u30ab\u30fc\u306e\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u8981\u4ef6\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u6c38\u4e45\u7684\u306b\u5727\u7e2e\u3001\u786c\u5316\u3001\u3072\u3073\u5272\u308c\u3001\u307e\u305f\u306f\u50b7\u3064\u3044\u305f\u30ac\u30b9\u30b1\u30c3\u30c8\u306f\u3001\u305d\u306e\u307e\u307e\u518d\u5229\u7528\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u4ea4\u63db\u7528\u30ac\u30b9\u30b1\u30c3\u30c8\u306f\u3001\u5358\u306b\u5916\u89b3\u304c\u4f3c\u3066\u3044\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u5bf8\u6cd5\u3068\u6750\u8cea\u304c\u6b63\u3057\u3044\u3082\u306e\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u76ee\u306b\u898b\u3048\u308b\u6cb9\u306f\u3001\u5fc5\u305a\u3057\u3082\u30d7\u30ed\u30bb\u30b9\u63a5\u7d9a\u90e8\u304b\u3089\u306e\u6f0f\u308c\u3092\u610f\u5473\u3059\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<\/h3>\n\n\n\n<p>\u5fc5\u305a\u3057\u3082\u305d\u3046\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u6db2\u5c01\u5f0f\u5727\u529b\u8a08\u306e\u5834\u5408\u3001\u6db2\u306f\u30b1\u30fc\u30b9\u5145\u586b\u90e8\u304b\u3089\u6f0f\u308c\u308b\u5834\u5408\u3082\u3042\u308c\u3070\u3001\u30d7\u30ed\u30bb\u30b9\u63a5\u7d9a\u90e8\u3084\u305d\u306e\u4ed6\u306e\u640d\u50b7\u7b87\u6240\u304b\u3089\u30d7\u30ed\u30bb\u30b9\u5a92\u4f53\u304c\u6f0f\u308c\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u4fee\u7406\u65b9\u6cd5\u3092\u9078\u629e\u3059\u308b\u524d\u306b\u3001\u6f0f\u308c\u306e\u539f\u56e0\u3092\u5b89\u5168\u306b\u7279\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6db2\u304c\u6f0f\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u3060\u3051\u3067\u306f\u3001\u6545\u969c\u7b87\u6240\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"connection-leak-conclusion\"><span class=\"ez-toc-section\" id=\"correct-the-cause-before-returning-to-service\"><\/span>\u904b\u7528\u518d\u958b\u524d\u306b\u539f\u56e0\u3092\u662f\u6b63\u3057\u3066\u304f\u3060\u3055\u3044<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5727\u529b\u8a08\u306e\u63a5\u7d9a\u90e8\u304b\u3089\u306e\u6f0f\u308c\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3001\u306d\u3058\u5c71\u306e\u9069\u5408\u6027\u3001\u30b7\u30fc\u30eb\u4f4d\u7f6e\u3001\u30ac\u30b9\u30b1\u30c3\u30c8\u306e\u72b6\u614b\u3001\u30b7\u30fc\u30eb\u6750\u3001\u7de0\u3081\u4ed8\u3051\u5177\u5408\u306e5\u3064\u306e\u9805\u76ee\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u9078\u5b9a\u3084\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u4f9d\u983c\u3059\u308b\u524d\u306b\u3001\u30b2\u30fc\u30b8\u306e\u578b\u756a\u3001\u63a5\u7d9a\u4ed5\u69d8\u3001\u5a92\u4f53\u3001\u5727\u529b\u3001\u6e29\u5ea6\u3001\u304a\u3088\u3073\u63a5\u7d9a\u90e8\u306e\u9bae\u660e\u306a\u5199\u771f\u3092\u8a18\u9332\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.sj-gauge.com\/ja\/contact\/\">\u30b2\u30fc\u30b8\u3068\u63a5\u7d9a\u65b9\u6cd5\u306e\u9078\u629e\u306b\u3064\u3044\u3066\u8a71\u3057\u5408\u3046<\/a><\/p>\n\n\n\n<p>\u95a2\u9023\u8a18\u4e8b\uff1a <a href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-npt-pt-g-thread\/\">\u5727\u529b\u8a08\u306eNPT\u30fbPT\u30fbG\u306d\u3058\u306e\u9055\u3044\uff1a\u306d\u3058\u898f\u683c\u3068\u30b7\u30fc\u30eb\u65b9\u5f0f\u3092\u89e3\u8aac<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>A pressure gauge leaking gas or liquid after installation does not necessarily have a faulty measuring element. Incompatible threads, an incorrect sealing method, a damaged gasket or improper tightening can all cause leakage at the process connection. Adding more sealing tape or tightening harder may hide the problem without correcting it. Before touching or loosening a connection, stop pressurization, isolate the pressure source and follow the equipment procedure for safe depressurization, draining and cooling. Do not tighten a leaking connection under pressure. Closing an isolation valve can leave pressure trapped at the gauge; a zero dial reading alone is not proof that the connection is safe to open. Figure 1 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":6022,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[71],"class_list":["post-6024","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-pressure"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v28.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Pressure Gauge Connection Leaks: 5 Checks\u306b\u3064\u3044\u3066\uff5cSJ Gauge<\/title>\n<meta name=\"description\" content=\"Pressure gauge leaking after installation? 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