{"id":5437,"date":"2026-07-29T19:25:58","date_gmt":"2026-07-29T11:25:58","guid":{"rendered":"https:\/\/www.sj-gauge.com\/?p=5437"},"modified":"2026-07-29T22:55:28","modified_gmt":"2026-07-29T14:55:28","slug":"pressure-gauge-npt-pt-g-thread","status":"publish","type":"post","link":"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-npt-pt-g-thread\/","title":{"rendered":"\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"},"content":{"rendered":"<p>\u5727\u529b\u8a08\u306e\u30d7\u30ed\u30bb\u30b9\u63a5\u7d9a\u306b\u306f\u3001NPT\u3001G\/BSPP\u3001\u304a\u3088\u3073\u5e02\u5834\u3067\u4e00\u822c\u306bPT\u3068\u547c\u3070\u308c\u308b\u306d\u3058\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u5916\u89b3\u304c\u307b\u307c\u540c\u3058\u3067\u3082\u3001\u30c6\u30fc\u30d1\u3001\u306d\u3058\u5c71\u5f62\u72b6\u3001\u30d4\u30c3\u30c1\u3001\u30b7\u30fc\u30eb\u4f4d\u7f6e\u304c\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u306d\u3058\u898f\u683c\u3092\u8aa4\u308b\u3068\u3001\u6b63\u3057\u304f\u7de0\u7d50\u3067\u304d\u306a\u3044\u3001\u306d\u3058\u3092\u640d\u50b7\u3059\u308b\u3001\u307e\u305f\u306f\u6f0f\u308c\u304c\u767a\u751f\u3059\u308b\u304a\u305d\u308c\u304c\u3042\u308a\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f3\u3064\u306e\u4e00\u822c\u7684\u306a\u306d\u3058\u898f\u683c\u3092\u6bd4\u8f03\u3057\u3001\u4ea4\u63db\u7528\u5727\u529b\u8a08\u3092\u6ce8\u6587\u3059\u308b\u524d\u306e\u78ba\u8a8d\u4e8b\u9805\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-npt-pt-g-thread-comparison-sj-gauge.webp\" alt=\"SJ pressure gauge with exposed male process connection thread\" class=\"wp-image-5434\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-npt-pt-g-thread-comparison-sj-gauge.webp 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-npt-pt-g-thread-comparison-sj-gauge-300x200.webp 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-npt-pt-g-thread-comparison-sj-gauge-1024x683.webp 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-npt-pt-g-thread-comparison-sj-gauge-768x512.webp 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-npt-pt-g-thread-comparison-sj-gauge-18x12.webp 18w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-npt-pt-g-thread-comparison-sj-gauge-600x400.webp 600w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><figcaption class=\"wp-element-caption\">\u30aa\u30b9\u306d\u3058\u306e\u30d7\u30ed\u30bb\u30b9\u63a5\u7d9a\u90e8\u304c\u898b\u3048\u308bSJ Gauge\u88fd\u5727\u529b\u8a08\u3002<\/figcaption><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 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-npt-pt-g-thread\/#npt-vs-pt-vs-g-threads-quick-comparison\" >NPT\u30fbPT\u30fbG\u306d\u3058\u306e\u65e9\u898b\u6bd4\u8f03<\/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-npt-pt-g-thread\/#what-is-an-npt-pressure-gauge-thread\" >\u5727\u529b\u8a08\u306eNPT\u306d\u3058\u3068\u306f\uff1f<\/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-npt-pt-g-thread\/#why-does-a-gbspp-thread-need-a-washer-or-o-ring\" >G\/BSPP\u306d\u3058\u306b\u30ac\u30b9\u30b1\u30c3\u30c8\u307e\u305f\u306fO\u30ea\u30f3\u30b0\u304c\u5fc5\u8981\u306a\u7406\u7531<\/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-npt-pt-g-thread\/#can-a-pt-thread-be-connected-directly-to-npt\" >PT\u306d\u3058\u3092NPT\u3078\u76f4\u63a5\u63a5\u7d9a\u3067\u304d\u308b\u304b\uff1f<\/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-npt-pt-g-thread\/#international-standards-reference\" >\u56fd\u969b\u898f\u683c\u306e\u53c2\u8003\u60c5\u5831<\/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-npt-pt-g-thread\/#how-to-identify-the-thread-on-an-existing-pressure-gauge\" >\u65e2\u8a2d\u5727\u529b\u8a08\u306e\u306d\u3058\u3092\u8b58\u5225\u3059\u308b\u65b9\u6cd5<\/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-npt-pt-g-thread\/#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-npt-pt-g-thread\/#conclusion\" >\u307e\u3068\u3081<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-npt-vs-pt-vs-g-threads-quick-comparison\"><span class=\"ez-toc-section\" id=\"npt-vs-pt-vs-g-threads-quick-comparison\"><\/span>NPT\u30fbPT\u30fbG\u306d\u3058\u306e\u65e9\u898b\u6bd4\u8f03<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th>\u306d\u3058\u306e\u7a2e\u985e<\/th><th>\u306d\u3058\u5f62\u72b6<\/th><th>\u4e00\u822c\u7684\u306a\u30b7\u30fc\u30eb\u65b9\u5f0f<\/th><th>\u9078\u5b9a\u306e\u8981\u70b9<\/th><\/tr><\/thead><tbody><tr><td><strong>NPT<\/strong><\/td><td>\u30c6\u30fc\u30d1\u7ba1\u7528\u306d\u3058<\/td><td>\u306d\u3058\u90e8\u306b\u9069\u5408\u3059\u308b\u30b7\u30fc\u30eb\u5264\u307e\u305f\u306fPTFE\u30c6\u30fc\u30d7\u3092\u4f7f\u7528<\/td><td>\u5317\u7c73\u898f\u683c\u306e\u6a5f\u5668\u3067\u4e00\u822c\u7684<\/td><\/tr><tr><td><strong>G \/ BSPP<\/strong><\/td><td>\u5e73\u884c\u7ba1\u7528\u306d\u3058<\/td><td>\u63a5\u5408\u7aef\u9762\u306e\u30ac\u30b9\u30b1\u30c3\u30c8\u3001\u30dc\u30f3\u30c7\u30c3\u30c9\u30b7\u30fc\u30eb\u3001\u307e\u305f\u306fO\u30ea\u30f3\u30b0\u3067\u30b7\u30fc\u30eb<\/td><td>\u30a2\u30b8\u30a2\u304a\u3088\u3073\u6b27\u5dde\u306e\u6a5f\u5668\u3067\u4e00\u822c\u7684<\/td><\/tr><tr><td><strong>PT \/ R\u30bf\u30a4\u30d7<\/strong><\/td><td>\u4e00\u822c\u306b\u30c6\u30fc\u30d1\u7ba1\u7528\u306d\u3058\u3092\u6307\u3059\u5e02\u5834\u6163\u7528\u540d<\/td><td>\u306d\u3058\u90e8\u3067\u30b7\u30fc\u30eb<\/td><td>\u5b9f\u969b\u306e\u898f\u683c\u3068\u30aa\u30b9\u30fb\u30e1\u30b9\u306d\u3058\u306e\u533a\u5206\u3092\u78ba\u8a8d<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-background\" style=\"background-color:#eef4f7;padding-top:18px;padding-right:20px;padding-bottom:18px;padding-left:20px\"><strong>\u91cd\u8981\uff1a<\/strong> \u300c1\/4\u30a4\u30f3\u30c1\u300d\u306a\u3069\u306e\u547c\u3073\u5f84\u3060\u3051\u3067\u306f\u3001\u306d\u3058\u898f\u683c\u3092\u7279\u5b9a\u3067\u304d\u307e\u305b\u3093\u30021\/4 NPT\u63a5\u7d9a\u306f\u3001G 1\/4\u307e\u305f\u306fPT\u63a5\u7d9a\u3068\u81ea\u52d5\u7684\u306b\u4e92\u63db\u306b\u306a\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/sj-pressure-gauge-process-connection-threads-front-back.webp\" alt=\"SJ pressure gauges shown from front and back with exposed threaded process connections\" class=\"wp-image-5435\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/sj-pressure-gauge-process-connection-threads-front-back.webp 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/sj-pressure-gauge-process-connection-threads-front-back-300x200.webp 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/sj-pressure-gauge-process-connection-threads-front-back-1024x683.webp 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/sj-pressure-gauge-process-connection-threads-front-back-768x512.webp 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/sj-pressure-gauge-process-connection-threads-front-back-18x12.webp 18w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/sj-pressure-gauge-process-connection-threads-front-back-600x400.webp 600w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><figcaption class=\"wp-element-caption\">\u63a5\u7d9a\u306d\u3058\u304c\u898b\u3048\u308bSJ Gauge\u88fd\u5727\u529b\u8a08\u306e\u6b63\u9762\u304a\u3088\u3073\u80cc\u9762\u3002<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-an-npt-pressure-gauge-thread\"><span class=\"ez-toc-section\" id=\"what-is-an-npt-pressure-gauge-thread\"><\/span>\u5727\u529b\u8a08\u306eNPT\u306d\u3058\u3068\u306f\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>NPT\u306f\u30c6\u30fc\u30d1\u7ba1\u7528\u306d\u3058\u3067\u3059\u3002\u30aa\u30b9\u306d\u3058\u3068\u30e1\u30b9\u306d\u3058\u306f\u7d44\u307f\u4ed8\u3051\u308b\u306b\u3064\u308c\u3066\u5f90\u3005\u306b\u7de0\u307e\u308a\u3001\u901a\u5e38\u306f\u3089\u305b\u3093\u72b6\u306e\u6f0f\u308c\u7d4c\u8def\u3092\u585e\u3050\u305f\u3081\u3001\u9069\u5408\u3059\u308b\u306d\u3058\u30b7\u30fc\u30eb\u5264\u307e\u305f\u306fPTFE\u30c6\u30fc\u30d7\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u53d6\u4ed8\u5f8c\u306b\u6570\u5c71\u306e\u306d\u3058\u304c\u898b\u3048\u3066\u3044\u3066\u3082\u3001\u63a5\u7d9a\u304c\u7de9\u3044\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u9069\u5207\u306a\u306d\u3058\u8fbc\u307f\u91cf\u306f\u30b5\u30a4\u30ba\u3001\u516c\u5dee\u3001\u65bd\u5de5\u6761\u4ef6\u3067\u7570\u306a\u308a\u307e\u3059\u3002\u7de0\u3081\u904e\u304e\u308b\u3068\u7d99\u624b\u306e\u4e80\u88c2\u3001\u5727\u529b\u8a08\u30bd\u30b1\u30c3\u30c8\u306e\u5909\u5f62\u3001\u306d\u3058\u640d\u50b7\u306b\u3064\u306a\u304c\u308b\u304a\u305d\u308c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-why-does-a-g-bspp-thread-need-a-washer-or-o-ring\"><span class=\"ez-toc-section\" id=\"why-does-a-gbspp-thread-need-a-washer-or-o-ring\"><\/span>G\/BSPP\u306d\u3058\u306b\u30ac\u30b9\u30b1\u30c3\u30c8\u307e\u305f\u306fO\u30ea\u30f3\u30b0\u304c\u5fc5\u8981\u306a\u7406\u7531<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>G\u306d\u3058\uff08BSPP\uff09\u306f\u30c6\u30fc\u30d1\u3067\u306f\u306a\u304f\u5e73\u884c\u306d\u3058\u3067\u3059\u3002\u30aa\u30b9\u306d\u3058\u3068\u30e1\u30b9\u306d\u3058\u3092\u304f\u3055\u3073\u72b6\u306b\u7de0\u3081\u8fbc\u3093\u3067\u30b7\u30fc\u30eb\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u63a5\u5408\u7aef\u9762\u306b\u30ac\u30b9\u30b1\u30c3\u30c8\u3001\u30dc\u30f3\u30c7\u30c3\u30c9\u30b7\u30fc\u30eb\u3001\u307e\u305f\u306fO\u30ea\u30f3\u30b0\u3092\u7528\u3044\u3066\u6c17\u5bc6\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30b7\u30fc\u30eb\u90e8\u54c1\u304c\u306a\u3044\u3001\u640d\u50b7\u3057\u3066\u3044\u308b\u3001\u307e\u305f\u306f\u6d41\u4f53\u3084\u6e29\u5ea6\u306b\u9069\u5408\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3001PTFE\u30c6\u30fc\u30d7\u3092\u5897\u3084\u3057\u3066\u3082\u6f0f\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002G\u306d\u3058\u63a5\u7d9a\u3067\u306f\u3001\u306d\u3058\u3060\u3051\u306b\u983c\u3089\u305a\u30b7\u30fc\u30eb\u9762\u3092\u70b9\u691c\u3057\u3001\u9069\u5207\u306a\u30ac\u30b9\u30b1\u30c3\u30c8\u6750\u8cea\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-thread-adapters-male-female-connection.jpg\" alt=\"Stainless steel pressure gauge thread adapters showing male and female connections\" class=\"wp-image-5451\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-thread-adapters-male-female-connection.jpg 1536w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-thread-adapters-male-female-connection-300x200.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-thread-adapters-male-female-connection-1024x683.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-thread-adapters-male-female-connection-768x512.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-thread-adapters-male-female-connection-18x12.jpg 18w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/07\/pressure-gauge-thread-adapters-male-female-connection-600x400.jpg 600w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><figcaption class=\"wp-element-caption\">\u30b9\u30c6\u30f3\u30ec\u30b9\u88fd\u306e\u30e1\u30b9\u306d\u3058\u30fb\u30aa\u30b9\u306d\u3058\u5909\u63db\u30a2\u30c0\u30d7\u30bf\u3092\u3001\u30aa\u30b9\u5074\u3068\u30e1\u30b9\u5074\u304b\u3089\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-can-a-pt-thread-be-connected-directly-to-npt\"><span class=\"ez-toc-section\" id=\"can-a-pt-thread-be-connected-directly-to-npt\"><\/span>PT\u306d\u3058\u3092NPT\u3078\u76f4\u63a5\u63a5\u7d9a\u3067\u304d\u308b\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>PT\/R\u30bf\u30a4\u30d7\u3068NPT\u3092\u76f4\u63a5\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u306f\u63a8\u5968\u3055\u308c\u307e\u305b\u3093\u3002\u6700\u521d\u306e\u6570\u5c71\u306f\u306d\u3058\u8fbc\u3081\u308b\u3088\u3046\u306b\u898b\u3048\u3066\u3082\u3001\u306d\u3058\u5c71\u5f62\u72b6\u3001\u30d4\u30c3\u30c1\u3001\u5bf8\u6cd5\u898f\u683c\u304c\u4e00\u81f4\u3059\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u659c\u3081\u306d\u3058\u8fbc\u307f\u3001\u307e\u305f\u306f\u306d\u3058\u5c71\u9762\u306e\u640d\u50b7<\/li>\n\n\n\n<li>\u7d44\u4ed8\u3051\u6642\u306e\u304b\u3058\u308a\u3001\u307e\u305f\u306f\u713c\u4ed8\u304d<\/li>\n\n\n\n<li>\u306d\u3058\u8fbc\u307f\u4e0d\u8db3\u306b\u3088\u308b\u6a5f\u68b0\u7684\u5f37\u5ea6\u306e\u4f4e\u4e0b<\/li>\n\n\n\n<li>\u30b7\u30fc\u30eb\u5264\u3092\u5857\u5e03\u3057\u3066\u3082\u6f0f\u308c\u7d4c\u8def\u304c\u6b8b\u308b<\/li>\n<\/ul>\n\n\n\n<p>\u30a2\u30c0\u30d7\u30bf\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u4e21\u7aef\u3092\u500b\u5225\u306b\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4f8b\uff1a1\/4 NPT\u30aa\u30b9\uff0dG 1\/4\u30e1\u30b9\u3002\u3042\u308f\u305b\u3066\u5727\u529b\u5b9a\u683c\u3001\u6750\u8cea\u3001\u30b7\u30fc\u30eb\u65b9\u5f0f\u3082\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-international-standards-reference\"><span class=\"ez-toc-section\" id=\"international-standards-reference\"><\/span>\u56fd\u969b\u898f\u683c\u306e\u53c2\u8003\u60c5\u5831<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\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>ASME B1.20.1-2013\uff08R2018\uff09<\/strong><\/a>\uff1aNPT\u304a\u3088\u3073\u95a2\u9023\u3059\u308b\u30a4\u30f3\u30c1\u7cfb\u7ba1\u7528\u306d\u3058\u306e\u5bf8\u6cd5\u3068\u30b2\u30fc\u30b8\u691c\u67fb\u8981\u4ef6\u3002<\/li>\n\n\n\n<li><a href=\"https:\/\/www.iso.org\/standard\/20819.html\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>ISO 7-1:1994<\/strong><\/a>\u3001\u304a\u3088\u3073 <a href=\"https:\/\/www.iso.org\/standard\/46479.html\" target=\"_blank\" rel=\"noreferrer noopener\">\u6280\u8853\u6b63\u8aa4\u79681:2007<\/a>\uff1a\u306d\u3058\u90e8\u3067\u8010\u5727\u30b7\u30fc\u30eb\u3092\u5f62\u6210\u3059\u308bR\u3001Rc\u3001Rp\u7ba1\u7528\u306d\u3058\u3002<\/li>\n\n\n\n<li><a href=\"https:\/\/www.iso.org\/standard\/33777.html\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>ISO 228-1:2000<\/strong><\/a>\uff1aG\u3068\u547c\u3070\u308c\u308b\u5e73\u884c\u7ba1\u7528\u306d\u3058\u3002\u306d\u3058\u90e8\u3060\u3051\u3067\u306f\u8010\u5727\u30b7\u30fc\u30eb\u3092\u5f62\u6210\u3057\u307e\u305b\u3093\u3002<\/li>\n\n\n\n<li><a href=\"https:\/\/webdesk.jsa.or.jp\/books\/W11M0090\/?bunsyo_id=JIS+B+0203%3A1999\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>JIS B 0203:1999<\/strong><\/a>\uff1a\u65e5\u672c\u306e\u7523\u696d\u5206\u91ce\u3067\u4f7f\u7528\u3055\u308c\u308b\u30c6\u30fc\u30d1\u7ba1\u7528\u306d\u3058\u3002<\/li>\n<\/ul>\n\n\n\n<p><em>\u5404\u6848\u4ef6\u306b\u3064\u3044\u3066\u3001\u9069\u7528\u898f\u683c\u3001\u6539\u8a02\u72b6\u6cc1\u3001\u8a8d\u8a3c\u8981\u4ef6\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u898f\u683c\u3092\u5f15\u7528\u3059\u308b\u3060\u3051\u3067\u3001\u5727\u529b\u8a08\u307e\u305f\u306f\u63a5\u7d9a\u90e8\u304c\u8a8d\u8a3c\u6e08\u307f\u3068\u306a\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-identify-the-thread-on-an-existing-pressure-gauge\"><span class=\"ez-toc-section\" id=\"how-to-identify-the-thread-on-an-existing-pressure-gauge\"><\/span>\u65e2\u8a2d\u5727\u529b\u8a08\u306e\u306d\u3058\u3092\u8b58\u5225\u3059\u308b\u65b9\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5727\u529b\u8a08\u306e\u5f62\u5f0f\u3001\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u3001\u8cfc\u5165\u8a18\u9332\u3001\u307e\u305f\u306f\u30bd\u30b1\u30c3\u30c8\u306e\u8868\u793a\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u9069\u5207\u306a\u30ce\u30ae\u30b9\u3067\u306d\u3058\u5916\u5f84\u3092\u6e2c\u5b9a\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u5199\u771f\u304b\u3089\u63a8\u6e2c\u305b\u305a\u3001\u306d\u3058\u30d4\u30c3\u30c1\u30b2\u30fc\u30b8\u3067\u30d4\u30c3\u30c1\u3092\u6e2c\u5b9a\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u306d\u3058\u304c\u5e73\u884c\u304b\u30c6\u30fc\u30d1\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30aa\u30b9\u30fb\u30e1\u30b9\u63a5\u7d9a\u3068\u30b7\u30fc\u30eb\u90e8\u54c1\u306e\u4f4d\u7f6e\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5b89\u5168\u4e0a\u91cd\u8981\u306a\u6a5f\u5668\u3067\u306f\u3001\u306d\u3058\u30b2\u30fc\u30b8\u3001\u7ba1\u7406\u56f3\u9762\u3001\u307e\u305f\u306f\u6a5f\u5668\u30e1\u30fc\u30ab\u30fc\u306e\u4ed5\u69d8\u66f8\u3067\u63a5\u7d9a\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\"><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\" id=\"h-can-i-identify-a-pressure-gauge-thread-from-a-photo\">\u5199\u771f\u3060\u3051\u3067\u5727\u529b\u8a08\u306e\u306d\u3058\u3092\u8b58\u5225\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p>\u63a5\u7d9a\u90e8\u5168\u4f53\u3068\u30b7\u30fc\u30eb\u9762\u304c\u5199\u3063\u3066\u3044\u308c\u3070\u3001\u5199\u771f\u306f\u4e00\u6b21\u5224\u5b9a\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30d4\u30c3\u30c1\u3001\u30c6\u30fc\u30d1\u3001\u306d\u3058\u898f\u683c\u3092\u78ba\u5b9f\u306b\u7279\u5b9a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u4ea4\u63db\u54c1\u306e\u554f\u3044\u5408\u308f\u305b\u6642\u306f\u3001\u65e2\u8a2d\u8a08\u5668\u306e\u5f62\u5f0f\u3068\u5b9f\u6e2c\u5bf8\u6cd5\u3082\u63d0\u793a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-is-1-4-npt-the-same-size-as-g-1-4\">1\/4 NPT\u3068G 1\/4\u306f\u540c\u3058\u30b5\u30a4\u30ba\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p>\u3044\u3044\u3048\u3002\u3069\u3061\u3089\u30821\/4\u30a4\u30f3\u30c1\u306e\u547c\u3073\u5f84\u3067\u3059\u304c\u3001\u306d\u3058\u898f\u683c\u3068\u30b7\u30fc\u30eb\u539f\u7406\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u547c\u3073\u5f84\u3060\u3051\u3067\u4e92\u63db\u6027\u3092\u5224\u65ad\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-should-ptfe-tape-be-used-on-a-g-thread\">G\u306d\u3058\u306bPTFE\u30c6\u30fc\u30d7\u306f\u5fc5\u8981\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p>G\/BSPP\u63a5\u7d9a\u306f\u901a\u5e38\u3001\u63a5\u5408\u7aef\u9762\u306e\u30ac\u30b9\u30b1\u30c3\u30c8\u3001\u30dc\u30f3\u30c7\u30c3\u30c9\u30b7\u30fc\u30eb\u3001\u307e\u305f\u306fO\u30ea\u30f3\u30b0\u3067\u30b7\u30fc\u30eb\u3057\u307e\u3059\u3002\u306d\u3058\u90e8\u306ePTFE\u30c6\u30fc\u30d7\u306f\u3001\u6307\u5b9a\u3055\u308c\u305f\u30b7\u30fc\u30eb\u90e8\u54c1\u306e\u4ee3\u308f\u308a\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><span class=\"ez-toc-section\" id=\"conclusion\"><\/span>\u307e\u3068\u3081<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>NPT\u3001PT\/R\u30bf\u30a4\u30d7\u3001G\/BSPP\u306e\u5727\u529b\u8a08\u306d\u3058\u306f\u3001\u5f62\u72b6\u3068\u30b7\u30fc\u30eb\u65b9\u5f0f\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u6ce8\u6587\u524d\u306b\u3001\u306d\u3058\u898f\u683c\u3001\u547c\u3073\u5f84\u3001\u30aa\u30b9\u30fb\u30e1\u30b9\u69cb\u6210\u3001\u30b7\u30fc\u30eb\u4f4d\u7f6e\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3067\u3001\u6f0f\u308c\u3001\u659c\u3081\u306d\u3058\u8fbc\u307f\u3001\u4e0d\u8981\u306a\u4ea4\u63db\u4f5c\u696d\u3092\u9632\u3052\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-8400acc9 wp-block-group-is-layout-constrained\" style=\"background-color:#f3f7f9;padding-top:24px;padding-right:28px;padding-bottom:24px;padding-left:28px\">\n<h3 class=\"wp-block-heading\" id=\"h-need-help-confirming-an-existing-connection\">\u65e2\u8a2d\u63a5\u7d9a\u306e\u78ba\u8a8d\u3067\u304a\u56f0\u308a\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p>\u65e2\u8a2d\u5727\u529b\u8a08\u306e\u5f62\u5f0f\u3001\u9bae\u660e\u306a\u63a5\u7d9a\u90e8\u5199\u771f\u3001\u306d\u3058\u306e\u5b9f\u6e2c\u5bf8\u6cd5\u3092SJ Gauge\u3078\u304a\u9001\u308a\u304f\u3060\u3055\u3044\u3002\u63a5\u7d9a\u4ed5\u69d8\u306e\u7279\u5b9a\u3068\u3001\u9069\u5207\u306a\u5727\u529b\u8a08\u69cb\u6210\u306e\u9078\u5b9a\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.sj-gauge.com\/ja\/contact\/\">SJ Gauge\u3078\u304a\u554f\u3044\u5408\u308f\u305b<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<p><strong>\u95a2\u9023\u8a18\u4e8b\uff1a<\/strong> <a href=\"https:\/\/www.sj-gauge.com\/ja\/thread-standards-identification\/\">\u5de5\u696d\u8a08\u5668\u306e\u306d\u3058\u898f\u683c\uff1a\u63a5\u7d9a\u4ed5\u69d8\u3092\u6b63\u3057\u304f\u8b58\u5225\u3059\u308b\u65b9\u6cd5<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>NPT\u3001PT\/R\u3001G\/BSPP\u306e\u5727\u529b\u8a08\u306d\u3058\u306f\u5916\u89b3\u304c\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001\u30c6\u30fc\u30d1\u3001\u30d4\u30c3\u30c1\u3001\u30b7\u30fc\u30eb\u65b9\u5f0f\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u5404\u898f\u683c\u3092\u6bd4\u8f03\u3057\u3001\u6f0f\u308c\u3001\u306d\u3058\u306e\u304b\u3058\u308a\u3001\u63a5\u7d9a\u90e8\u306e\u640d\u50b7\u3092\u9632\u3050\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>","protected":false},"author":2,"featured_media":5434,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[73],"class_list":["post-5437","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-knowledge"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Pressure Gauge NPT vs PT vs G Threads | SJ Gauge<\/title>\n<meta name=\"description\" content=\"Compare NPT, PT\/R and G\/BSPP pressure gauge threads by taper, thread standard and sealing method to avoid leaks and damaged connections.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-npt-pt-g-thread\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pressure Gauge NPT vs PT vs G Threads: Differences and Sealing Methods\" \/>\n<meta property=\"og:description\" content=\"Compare NPT, PT\/R and G\/BSPP pressure gauge threads by taper, thread standard and sealing method to avoid leaks and 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