{"id":1291,"date":"2026-05-23T16:03:03","date_gmt":"2026-05-23T16:03:03","guid":{"rendered":"https:\/\/cartervalves.com\/?p=1291"},"modified":"2026-05-23T16:03:05","modified_gmt":"2026-05-23T16:03:05","slug":"what-is-vena-contracta","status":"publish","type":"post","link":"https:\/\/cartervalves.com\/ja\/what-is-vena-contracta\/","title":{"rendered":"\u5927\u9759\u8108\u53ce\u7e2e\u3068\u306f\uff1f\u30d0\u30eb\u30d6\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u7269\u7406\u5b66"},"content":{"rendered":"<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"900\" src=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-cover.webp\" alt=\"\u5927\u9759\u8108\u53ce\u7e2e\u30d5\u30ed\u30fc\u56f3-\u30aa\u30ea\u30d5\u30a3\u30b9\u30d7\u30ec\u30fc\u30c8\u4e0b\u6d41\u306e\u6700\u5c0f\u9762\u7a4d\u65ad\u9762\u56f3\u3001\u5727\u529b\u3068\u6d41\u901f\u306e\u30be\u30fc\u30f3\u3092\u793a\u3059\u3002\" class=\"wp-image-1290\" srcset=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-cover.webp 1200w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-cover-300x225.webp 300w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-cover-1024x768.webp 1024w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-cover-768x576.webp 768w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-cover-16x12.webp 16w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u8a08\u7b97\u3057\u305f\u5727\u529b\u964d\u4e0b\u306f\u30d0\u30eb\u30d6\u306b\u30c0\u30e1\u30fc\u30b8\u3092\u4e0e\u3048\u308b\u5727\u529b\u3067\u306f\u306a\u3044<\/h2>\n\n\n\n<p>\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u6db2\u4f53\u7528\u8abf\u7bc0\u5f01\u306e\u30b5\u30a4\u30ba\u3092\u6c7a\u3081\u308b\u3068\u304d\u3001\u4e00\u822c\u7684\u306b\u5165\u53e3\u3068\u51fa\u53e3\u9593\u306e\u5727\u529b\u640d\u5931\uff08P\u2081\u304b\u3089P\u2082\u3092\u5f15\u3044\u305f\u5024\uff09\u306b\u6ce8\u76ee\u3057\u307e\u3059\u3002\u305d\u306e\u6570\u5024\u304cCv\u8a08\u7b97\u306e\u539f\u52d5\u529b\u3068\u306a\u308a\u3001\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306b\u8a18\u8f09\u3055\u308c\u3001\u7d19\u306e\u4e0a\u3067\u306f\u6b63\u3057\u304f\u898b\u3048\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u5b9f\u969b\u306b\u30d0\u30eb\u30d6\u30c8\u30ea\u30e0\u3092\u640d\u50b7\u3055\u305b\u308b\u5727\u529b\u306f\u3001\u305d\u306e\u65b9\u7a0b\u5f0f\u306b\u306f\u6c7a\u3057\u3066\u73fe\u308c\u306a\u3044\u3002\u305d\u308c\u306f\u30d0\u30eb\u30d6\u672c\u4f53\u306e\u5185\u90e8\u3067\u3001\u6d41\u4f53\u30b8\u30a7\u30c3\u30c8\u304c\u305d\u306e\u6700\u5c0f\u65ad\u9762\u7a4d\u307e\u3067\u53ce\u7e2e\u3057\u3001\u5c40\u6240\u5727\u529b\u304cP\u2082\u3092\u306f\u308b\u304b\u306b\u4e0b\u56de\u308b\u5730\u70b9\u3067\u8d77\u3053\u308b\u3002\u305d\u306e\u5185\u90e8\u6700\u4f4e\u5727\u529b\u304c\u6db2\u4f53\u306e\u84b8\u6c17\u5727\u3092\u4e0b\u56de\u308b\u3068\u3001\u84b8\u6c17\u6ce1\u304c\u5f62\u6210\u3055\u308c\u3001\u305d\u308c\u304c\u5d29\u58ca\u3059\u308b\u3068\u3001\u786c\u5316\u3057\u305f\u91d1\u5c5e\u8868\u9762\u306b\u7a74\u3092\u958b\u3051\u3001110dB\u3092\u8d85\u3048\u308b\u9a12\u97f3\u3092\u767a\u751f\u3055\u305b\u3001\u8a66\u904b\u8ee2\u304b\u3089\u6570\u30ab\u6708\u4ee5\u5185\u306b\u9ad8\u4fa1\u306a\u30c8\u30ea\u30e0\u3092\u7834\u58ca\u3059\u308b\u306e\u306b\u5341\u5206\u306a\u529b\u3067\u5d29\u58ca\u3059\u308b\u3002.<\/p>\n\n\n\n<p>\u305d\u306e\u5185\u90e8\u6700\u4f4e\u5727\u529b\u70b9\u306b\u306f\u540d\u524d\u304c\u3042\u308b\u3002 <strong>\u62d8\u7e2e\u6027\u5927\u9759\u8108<\/strong>. .\u305d\u308c\u304c\u4f55\u306a\u306e\u304b\u3001\u3069\u3053\u3067\u5f62\u6210\u3055\u308c\u308b\u306e\u304b\u3001\u5727\u529b\u304c\u3069\u306e\u7a0b\u5ea6\u4e0b\u304c\u308b\u306e\u304b\u3001\u30d0\u30eb\u30d6\u306e\u5f62\u72b6\u304c\u3069\u306e\u3088\u3046\u306b\u305d\u308c\u3092\u5236\u5fa1\u3059\u308b\u306e\u304b\u3092\u6b63\u78ba\u306b\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u6db2\u4f53\u30b5\u30fc\u30d3\u30b9\u5236\u5fa1\u30d0\u30eb\u30d6\u306e\u4ed5\u69d8\u6c7a\u5b9a\u3084\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u884c\u3046\u8005\u306b\u3068\u3063\u3066\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u77e5\u8b58\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u8a18\u4e8b\u306f\u305d\u306e\u5168\u3066\u3092\u30ab\u30d0\u30fc\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5927\u9759\u8108\u53ce\u7e2e\u3068\u306f\u4f55\u304b\uff1f\u7269\u7406\u7684\u5b9a\u7fa9<\/h2>\n\n\n\n<p>\u5927\u9759\u8108\u53ce\u7e2e-\u30e9\u30c6\u30f3\u8a9e\u3067\u300c\u53ce\u7e2e\u3057\u305f\u9759\u8108\u300d\u3092\u610f\u5473\u3059\u308b-\u306f\u3001\u6d41\u4f53\u5674\u6d41\u306b\u304a\u3044\u3066\u3001\u6d41\u4f53\u9762\u7a4d\u304c\u6700\u5c0f\u306b\u306a\u308a\u3001\u6d41\u4f53\u901f\u5ea6\u304c\u6700\u5927\u306b\u306a\u308a\u3001\u9759\u5727\u304c\u6700\u5c0f\u306b\u306a\u308b\u65ad\u9762\u70b9\u3067\u3042\u308b\u3002.<\/p>\n\n\n\n<p>\u3053\u306e\u73fe\u8c61\u306f\u30011643\u5e74\u306b\u30a8\u30f4\u30a1\u30f3\u30b8\u30a7\u30ea\u30b9\u30bf\u30fb\u30c8\u30ea\u30c1\u30a7\u30c3\u30ea\u304c\u30bf\u30f3\u30af\u306e\u30aa\u30ea\u30d5\u30a3\u30b9\u304b\u3089\u306e\u6d41\u308c\u3092\u7814\u7a76\u3057\u3066\u3044\u305f\u3068\u304d\u306b\u521d\u3081\u3066\u8a18\u8ff0\u3057\u305f\u3082\u306e\u3067\u3042\u308b\u3002\u92ed\u89d2\u306e\u958b\u53e3\u90e8\u304b\u3089\u6d41\u4f53\u304c\u5674\u51fa\u3059\u308b\u3068\u3001\u5674\u6d41\u306f\u77ed\u3044\u8ddd\u96e2\u306e\u9593\u72ed\u307e\u308a\u7d9a\u3051\u308b\u3002 <em>\u30c0\u30a6\u30f3\u30b9\u30c8\u30ea\u30fc\u30e0<\/em> \u518d\u3073\u62e1\u5f35\u3057\u59cb\u3081\u308b\u524d\u306e\u958b\u53e3\u90e8\u306e\u3002\u305d\u306e\u5674\u6d41\u306e\u6700\u3082\u72ed\u3044\u65ad\u9762\u304c\u53ce\u7e2e\u5927\u9759\u8108\u3067\u3042\u308b\u3002.<\/p>\n\n\n\n<p>\u7269\u7406\u7684\u306a\u7406\u7531\u306f\u7c21\u5358\u3060\u3002\u6d41\u4f53\u306e\u6d41\u7dda\u306f\u3001\u76f4\u89d2\u306b\u92ed\u304f\u66f2\u304c\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3002\u6d41\u308c\u304c\u5236\u9650\uff08\u30aa\u30ea\u30d5\u30a3\u30b9\u30d7\u30ec\u30fc\u30c8\u3001\u30d0\u30eb\u30d6\u30b7\u30fc\u30c8\u3001\u30c7\u30a3\u30b9\u30af\u3068\u30b7\u30fc\u30c8\u30ea\u30f3\u30b0\u306e\u9593\u306e\u9699\u9593\uff09\u306b\u8fd1\u3065\u304f\u3068\u3001\u4e00\u756a\u5916\u5074\u306e\u6d41\u7dda\u306f\u5f90\u3005\u306b\u5185\u5074\u306b\u30ab\u30fc\u30d6\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u3053\u306e\u30ab\u30fc\u30d6\u306f\u3001\u5236\u9650\u306e\u7269\u7406\u7684\u30a8\u30c3\u30b8\u3092\u8d8a\u3048\u3066\u3082\u7d9a\u304f\u305f\u3081\u3001\u30b8\u30a7\u30c3\u30c8\u306f\u30aa\u30ea\u30d5\u30a3\u30b9\u81ea\u4f53\u3092\u8d8a\u3048\u3066\u53ce\u7e2e\u3057\u7d9a\u3051\u307e\u3059\u3002\u6d41\u7dda\u304c\u5b8c\u5168\u306b\u56de\u8ee2\u3057\u305f\u5f8c\u3067\u306e\u307f\u3001\u30b8\u30a7\u30c3\u30c8\u304c\u81a8\u5f35\u3057\u59cb\u3081\u3001\u6d41\u308c\u304c\u30d1\u30a4\u30d7\u58c1\u306b\u518d\u3073\u4ed8\u7740\u3059\u308b\u3002.<\/p>\n\n\n\n<p>\u5927\u9759\u8108\u3067\u306f\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u4fdd\u5b58\uff08\u30d9\u30eb\u30cc\u30fc\u30a4\u306e\u539f\u7406\uff09\u304c\u901f\u5ea6\u3068\u5727\u529b\u306e\u95a2\u4fc2\u3092\u652f\u914d\u3059\u308b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6d41\u8def\u9762\u7a4d\u304c\u6700\u5c0f \u2192 \u6d41\u901f\u304c\u6700\u5927<\/li>\n<li>\u901f\u5ea6\u304c\u6700\u5927 \u2192 \u9759\u5727\u304c\u6700\u5c0f<\/li>\n<\/ul>\n\n\n\n<p>\u5927\u9759\u8108\u53ce\u7e2e\u90e8\u65ad\u9762\u7a4d\u3068\u30aa\u30ea\u30d5\u30a3\u30b9\u9762\u7a4d\u306e\u6bd4\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u547c\u3070\u308c\u308b\u3002 <strong>\u53ce\u7e2e\u4fc2\u6570\uff08Cc\uff09<\/strong>. .\u7406\u60f3\u7684\u306a\u6761\u4ef6\u4e0b\u3067\u92ed\u89d2\u306e\u5186\u5f62\u30aa\u30ea\u30d5\u30a3\u30b9\u306e\u5834\u5408\u3001Cc\u306e\u7406\u8ad6\u5024\u306f\u7d040.611\u3067\u3042\u308b\u3002\u3064\u307e\u308a\u3001\u5674\u6d41\u306f\u5927\u9759\u8108\u53ce\u7e2e\u70b9\u3067\u30aa\u30ea\u30d5\u30a3\u30b9\u9762\u7a4d\u306e\u7d0461%\u307e\u3067\u53ce\u7e2e\u3059\u308b\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1485\" height=\"1039\" src=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-pressure-velocity.webp\" alt=\"\u30d0\u30eb\u30d6\u306e\u6d41\u8def\u306b\u6cbf\u3063\u305f\u5727\u529b\u3068\u6d41\u901f\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb - \u4e0a\u6d41\u30d1\u30a4\u30d7\u3001\u63a5\u8fd1\u3059\u308b\u5236\u9650\u3001\u6700\u5c0f\u53ce\u7e2e\u5927\u9759\u8108\u3001\u5727\u529b\u56de\u5fa9\u30be\u30fc\u30f3\u3001\u4e0b\u6d41\u30d1\u30a4\u30d7\" class=\"wp-image-1292\" srcset=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-pressure-velocity.webp 1485w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-pressure-velocity-300x210.webp 300w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-pressure-velocity-1024x716.webp 1024w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-pressure-velocity-768x537.webp 768w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-pressure-velocity-18x12.webp 18w\" sizes=\"(max-width: 1485px) 100vw, 1485px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5236\u5fa1\u5f01\u306e\u5185\u90e8\u3067\u53ce\u7e2e\u5927\u9759\u8108\u304c\u5f62\u6210\u3055\u308c\u308b\u5834\u6240<\/h2>\n\n\n\n<p>\u5de5\u696d\u7528\u8abf\u7bc0\u5f01\u3067\u306f\u3001\u5927\u9759\u8108\u306f\u5f01\u5ea7\u81ea\u4f53\u306b\u306f\u5f62\u6210\u3055\u308c\u306a\u3044\u3002\u308f\u305a\u304b\u306b <em>\u30c0\u30a6\u30f3\u30b9\u30c8\u30ea\u30fc\u30e0<\/em> \u30d0\u30eb\u30d6\u672c\u4f53\u5185\u90e8\u306e\u30b7\u30fc\u30c8\u306e.<\/p>\n\n\n\n<p>\u6b63\u78ba\u306a\u4f4d\u7f6e\u3068\u91cd\u75c7\u5ea6\u306f\u30d0\u30eb\u30d6\u306e\u5f62\u72b6\u306b\u3088\u3063\u3066\u7570\u306a\u308b\uff1a<\/p>\n\n\n\n<p><strong>\u30b0\u30ed\u30fc\u30d6\u5f01<\/strong> \u306f\u5de6\u53f3\u5bfe\u79f0\u306e\u30d7\u30e9\u30b0\u30fb\u30a2\u30f3\u30c9\u30fb\u30b7\u30fc\u30c8\u306e\u914d\u7f6e\u3067\u3042\u308b\u3002\u6d41\u308c\u306f\u660e\u78ba\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u5186\u5f62\u306e\u5236\u9650\u3092\u901a\u904e\u3057\u3001\u5927\u9759\u8108\u53ce\u7e2e\u306f\u5f01\u5ea7\u306e\u3059\u3050\u4e0b\u306e\u4e88\u6e2c\u53ef\u80fd\u3067\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u30be\u30fc\u30f3\u306b\u5f62\u6210\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u5e7e\u4f55\u5b66\u7684\u5f62\u72b6\u306f\u3001\u30b0\u30ed\u30fc\u30d6\u30d0\u30eb\u30d6\u304c\u3088\u308a\u9ad8\u3044\u5727\u529b\u56de\u5fa9\u4fc2\u6570\u3092\u6301\u3064\u50be\u5411\u304c\u3042\u308b\u7406\u7531\u306e\u4e00\u3064\u3067\u3059\u3002.<\/p>\n\n\n\n<p><strong>\u30ed\u30fc\u30bf\u30ea\u30fc\u30d0\u30eb\u30d6<\/strong> (\u30d0\u30bf\u30d5\u30e9\u30a4\u3001\u30dc\u30fc\u30eb)\u306f\u3001\u30c7\u30a3\u30b9\u30af\u307e\u305f\u306f\u30dc\u30fc\u30eb\u306e\u4f4d\u7f6e\u306b\u3088\u3063\u3066\u9023\u7d9a\u7684\u306b\u5909\u5316\u3059\u308b\u4e0d\u898f\u5247\u306a\u65ad\u9762\u306e\u6d41\u8def\u9762\u7a4d\u3092\u6301\u3064\u3002\u6d41\u91cf\u5236\u9650\u306f\u975e\u5bfe\u79f0\u3067\u3042\u308a\u3001\u7279\u306b\u90e8\u5206\u7684\u306a\u958b\u5ea6\u3067\u306f\u3001\u30d0\u30eb\u30d6\u304c\u7d5e\u3089\u308c\u308b\u306b\u3064\u308c\u3066\u5927\u9759\u8108\u306e\u4f4d\u7f6e\u304c\u79fb\u52d5\u3057\u307e\u3059\u3002\u7279\u5b9a\u306e\u958b\u5ea6\u3067\u306f\u3001\u5168\u4f53\u7684\u306a\u6d41\u8def\u304c\u305d\u306e\u6700\u5c0f\u5024\u306b\u9054\u3059\u308b\u524d\u306b\u3001\u975e\u5e38\u306b\u4f4e\u5727\u306e\u5c40\u6240\u7684\u306a\u9818\u57df\u304c\u5f62\u6210\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u30ed\u30fc\u30bf\u30ea\u30fc\u30d0\u30eb\u30d6\u306f\u3001\u540c\u3058Cv\u3067\u30b5\u30a4\u30ba\u8a2d\u5b9a\u3055\u308c\u305f\u30b0\u30ed\u30fc\u30d6\u30d0\u30eb\u30d6\u3088\u308a\u3082\u3001\u4f4e\u5727\u4f4e\u4e0b\u6642\u306b\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u65e9\u671f\u306b\u767a\u751f\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p><strong>\u30b1\u30fc\u30b8\u30ac\u30a4\u30c9\u5f0f\u30b0\u30ed\u30fc\u30d6\u30d0\u30eb\u30d6<\/strong> \u306f\u3001\u30de\u30eb\u30c1\u30db\u30fc\u30eb\u30b1\u30fc\u30b8\u3092\u4f7f\u7528\u3057\u3066\u6d41\u91cf\u5236\u9650\u3092\u591a\u6570\u306e\u5c0f\u3055\u306a\u30aa\u30ea\u30d5\u30a3\u30b9\u306b\u5206\u5272\u3057\u3001\u305d\u308c\u305e\u308c\u304c\u72ec\u81ea\u306e\u5927\u9759\u8108\u53ce\u7e2e\u90e8\u3092\u5f62\u6210\u3057\u307e\u3059\u30021\u3064\u306e\u5927\u304d\u306a\u5236\u9650\u3067\u306f\u306a\u304f\u3001\u8907\u6570\u306e\u5c0f\u3055\u306a\u5236\u9650\u306b\u308f\u305f\u3063\u3066\u5727\u529b\u964d\u4e0b\u3092\u6bb5\u968e\u7684\u306b\u884c\u3046\u3053\u3068\u3067\u3001\u500b\u3005\u306e\u5927\u9759\u8108\u53ce\u7e2e\u90e8\u306b\u304a\u3051\u308b\u6700\u4f4e\u5727\u529b\u304c\u9ad8\u304f\u4fdd\u305f\u308c\u3001\u3053\u308c\u304c\u30a2\u30f3\u30c1\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u591a\u6bb5\u30c8\u30ea\u30e0\u8a2d\u8a08\u306e\u5de5\u5b66\u7684\u6839\u62e0\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u3069\u306e\u30d0\u30eb\u30d6\u30bf\u30a4\u30d7\u304c\u3069\u306e\u30b5\u30fc\u30d3\u30b9\u306b\u9069\u3057\u3066\u3044\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u6b21\u306e\u3053\u3068\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304b\u3089\u59cb\u307e\u308b\u3002 <a href=\"https:\/\/cartervalves.com\/ja\/what-is-a-control-valve-types-components\/\">\u5236\u5fa1\u5f01\u304c\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3057\u3001\u30c8\u30ea\u30e0\u5f62\u72b6\u304c\u3069\u306e\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b\u304b<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5927\u9759\u8108\u306e\u5727\u529b\uff1aFL\u56e0\u5b50<\/h2>\n\n\n\n<p>\u6db2\u4f53\u7528\u30d0\u30eb\u30d6\u306e\u30b5\u30a4\u30b8\u30f3\u30b0\u306b\u304a\u3051\u308b\u4e2d\u5fc3\u7684\u306a\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u306e\u554f\u984c\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3042\u308b\uff1a <em>\u5b9f\u969b\u3001\u5927\u9759\u8108\u306e\u5727\u529b\u306f\u3069\u306e\u304f\u3089\u3044\u4e0b\u304c\u308b\u306e\u3067\u3059\u304b\uff1f<\/em><\/p>\n\n\n\n<p>\u30d0\u30eb\u30d6\u30e1\u30fc\u30ab\u30fc\u5404\u793e\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30d0\u30eb\u30d6\u56fa\u6709\u306e\u7121\u6b21\u5143\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u3088\u3063\u3066\u3053\u306e\u7279\u6027\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u6db2\u5727\u56de\u53ce\u4fc2\u6570\u3001FL<\/strong>.<\/p>\n\n\n\n<p>FL\u306f\u305d\u306e\u95a2\u4fc2\u306b\u3088\u3063\u3066\u5b9a\u7fa9\u3055\u308c\u308b\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>P_vc = P\u2081 - (P\u2081 - P\u2082) \/ FL\u00b2.<\/strong><\/p><\/blockquote>\n\n\n\n<p>\u3069\u3053\u3067\u3060\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P\u2081 = \u4e0a\u6d41\u7d76\u5bfe\u5727<\/li>\n<li>P\u2082 = \u4e0b\u6d41\u306e\u7d76\u5bfe\u5727\u529b<\/li>\n<li>P_vc = \u5927\u9759\u8108\u53ce\u7e2e\u6642\u306e\u5727\u529b<\/li>\n<li>FL = \u6db2\u5727\u56de\u53ce\u4fc2\u6570\uff08\u30d0\u30eb\u30d6\u56fa\u6709\u3001\u30e1\u30fc\u30ab\u30fc\u30c7\u30fc\u30bf\u306b\u8a18\u8f09\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u5f0f\u304b\u3089\u5f97\u3089\u308c\u308b\u91cd\u8981\u306a\u6d1e\u5bdf\uff1aa <strong>FL\u4e0b\u9650\u5024<\/strong> \u5927\u9759\u8108\u306e\u5727\u529b\u304c\u4e0b\u304c\u308b\u3053\u3068\u3092\u610f\u5473\u3059\u308b <em>\u3055\u3089\u306b<\/em> P\u2081-P\u2082\u5dee\u3067\u4e0a\u6d41\u5727\u529b\u3088\u308a\u4f4e\u3044\u3002\u4f4eFL\u30d0\u30eb\u30d6\u306f\u672c\u8cea\u7684\u306b\u540c\u3058\u5727\u529b\u964d\u4e0b\u3067\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u8d77\u3053\u3057\u3084\u3059\u3044\u3002.<\/p>\n\n\n\n<p>FL\u5024\u306f\u30d0\u30eb\u30d6\u306e\u30bf\u30a4\u30d7\u306b\u3088\u3063\u3066\u5927\u304d\u304f\u7570\u306a\u308b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b0\u30ed\u30fc\u30d6\u5f01\uff1aFL\u22520.85-0.92\uff08\u9ad8\u3044-\u5727\u529b\u306f\u5f01\u5ea7\u3092\u904e\u304e\u3066\u3082\u3042\u307e\u308a\u56de\u5fa9\u3057\u306a\u3044\uff1b\u5927\u9759\u8108\u53ce\u7e2e\u306f\u6fc0\u3057\u3044\u304c\u30b3\u30f3\u30d1\u30af\u30c8\u3067\u3042\u308b\uff09<\/li>\n<li>\u9ad8\u6027\u80fd\u30d0\u30bf\u30d5\u30e9\u30a4\u30d0\u30eb\u30d6\uff08\u30c8\u30ea\u30d7\u30eb\u30aa\u30d5\u30bb\u30c3\u30c8\u30fb\u30b7\u30c3\u30af\u30b9\u30a8\u30bb\u30f3\u30c8\u30ea\u30c3\u30af\uff09\uff1aFL\u22520.75\uff5e0.90\uff08\u30c7\u30a3\u30b9\u30af\u5f62\u72b6\u3068\u958b\u89d2\u5ea6\u306b\u4f9d\u5b58\uff09<\/li>\n<li>\u6a19\u6e96\u7684\u306a\u30c0\u30d6\u30eb\u30fb\u30a8\u30bb\u30f3\u30c8\u30ea\u30c3\u30af\u30fb\u30d0\u30bf\u30d5\u30e9\u30a4\u30d0\u30eb\u30d6\uff1aFL\u22520.55\uff5e0.70\uff08\u4f4e\u5727-\u5927\u9759\u8108\u53ce\u7e2e\u306b\u3088\u308a\u3001\u540c\u3058\u5168\u4f53\u0394P\u3067\u3082\u304b\u306a\u308a\u4f4e\u3044\u5727\u529b\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\uff09<\/li>\n<li>\u30dc\u30fc\u30eb\u30d0\u30eb\u30d6FL\u22520.60-0.75\uff08\u30c8\u30ea\u30e0\u30b9\u30bf\u30a4\u30eb\u3068\u958b\u53e3\u7387\u306b\u3088\u3063\u3066\u5927\u304d\u304f\u7570\u306a\u308b\uff09<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1335\" height=\"731\" src=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-fl-comparison.webp\" alt=\"\u5727\u529b\u56de\u5fa9\u4fc2\u6570 FL \u30d0\u30eb\u30d6\u30bf\u30a4\u30d7\u5225\u6bd4\u8f03 - \u30b0\u30ed\u30fc\u30d6\u3001\u30dc\u30fc\u30eb\u3001\u6a19\u6e96\u30d0\u30bf\u30d5\u30e9\u30a4\u3001\u9ad8\u6027\u80fd\u30d0\u30bf\u30d5\u30e9\u30a4\" class=\"wp-image-1293\" srcset=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-fl-comparison.webp 1335w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-fl-comparison-300x164.webp 300w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-fl-comparison-1024x561.webp 1024w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-fl-comparison-768x421.webp 768w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-fl-comparison-18x10.webp 18w\" sizes=\"(max-width: 1335px) 100vw, 1335px\" \/><\/figure>\n\n\n\n<p>\u3053\u306e\u305f\u3081\u3001Cv\u5b9a\u683c\u304c\u540c\u3058\u3067\u3042\u3063\u3066\u3082\u3001\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306e\u30d0\u30eb\u30d6\u306e\u6319\u52d5\u306f\u5927\u304d\u304f\u7570\u306a\u308a\u307e\u3059\u3002FL\u306f\u30d0\u30eb\u30d6\u30b9\u30bf\u30a4\u30eb\u306b\u3088\u3063\u3066\u4e92\u63db\u6027\u304c\u306a\u3044\u305f\u3081\u3001\u30b5\u30a4\u30b8\u30f3\u30b0\u306e\u6bb5\u968e\u3067\u30d7\u30ed\u30bb\u30b9\u6761\u4ef6\u3068\u7167\u3089\u3057\u5408\u308f\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5927\u9759\u8108\u53ce\u7e2e\u3068\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\uff1a\u640d\u50b7\u30e1\u30ab\u30cb\u30ba\u30e0<\/h2>\n\n\n\n<p>\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u5927\u9759\u8108\u304b\u3089\u59cb\u307e\u308b\u3002\u5c40\u6240\u7684\u306a\u5727\u529bP_vc\u304c\u3001\u5927\u9759\u8108\u53ce\u7e2e\u6642\u306e\u5727\u529bP_vc\u3092\u4e0b\u56de\u308b\u3068\u3001\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u767a\u751f\u3059\u308b\u3002 <strong>\u6db2\u4f53\u306e\u84b8\u6c17\u5727\uff08Pv\uff09<\/strong> \u5674\u6d41\u6e29\u5ea6\u3067\u306f\u3001\u6db2\u4f53\u306f\u5c40\u6240\u7684\u306b\u6c17\u5316\u3057\u3001\u84b8\u6c17\u6ce1\u304c\u5674\u6d41\u4e2d\u306b\u5f62\u6210\u3055\u308c\u308b\u3002.<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6c17\u6ce1\u306f\u6d41\u308c\u3068\u3068\u3082\u306b\u4e0b\u6d41\u306b\u904b\u3070\u308c\u308b\u3002\u5927\u9759\u8108\u3092\u8d8a\u3048\u3066\u6d41\u57df\u304c\u62e1\u5927\u3059\u308b\u3068\u3001\u5727\u529b\u304c\u56de\u5fa9\u3059\u308b\u3002\u5c40\u6240\u7684\u306a\u5727\u529b\u304cPv\u3092\u4e0a\u56de\u308b\u3068\u3001\u6c17\u6ce1\u306f\u6025\u901f\u304b\u3064\u6fc0\u3057\u304f\u5d29\u58ca\u3059\u308b\u3002\u6c17\u6ce1\u306e\u5d29\u58ca\u306f\u5c40\u6240\u7684\u306a\u5727\u529b\u30b9\u30d1\u30a4\u30af\u3092\u767a\u751f\u3055\u305b\u3001IEC 60534-8-2\u3067\u53c2\u7167\u3055\u308c\u3066\u3044\u308b\u7814\u7a76\u3067\u306f\u3001\u786c\u5316\u3057\u305f\u91d1\u5c5e\u8868\u9762\u306b\u7a74\u3092\u958b\u3051\u308b\u306e\u306b\u5341\u5206\u306a\u9ad8\u3055\u306e\u30de\u30a4\u30af\u30ed\u30b8\u30a7\u30c3\u30c8\u885d\u6483\u5727\u3092\u7e70\u308a\u8fd4\u3057\u767a\u751f\u3055\u305b\u308b\u529b\u304c\u6e2c\u5b9a\u3055\u308c\u3066\u3044\u308b\u3002.<\/p>\n\n\n\n<p>\u640d\u50b7\u30d1\u30bf\u30fc\u30f3\u306f\u7279\u5fb4\u7684\u3067\u3001\u30b7\u30fc\u30c8\u9762\u3001\u30c7\u30a3\u30b9\u30af\u30a8\u30c3\u30b8\u3001\u30b1\u30fc\u30b8\u58c1\u9762\u3001\u4e0b\u6d41\u5074\u30dc\u30c7\u30a3\u8868\u9762\u306e\u30d4\u30c3\u30c6\u30a3\u30f3\u30b0\u3084\u30af\u30ec\u30fc\u30bf\u30fc\u304c\u3001\u6c17\u6ce1\u5d29\u58ca\u304c\u767a\u751f\u3059\u308b\u30be\u30fc\u30f3\u306b\u96c6\u4e2d\u3059\u308b\u3002\u30d5\u30e9\u30c3\u30b7\u30f3\u30b0\uff08\u84b8\u6c17\u304c\u4e0b\u6d41\u5074\u306e\u6d41\u308c\u306b\u6b8b\u308b\uff09\u3068\u306f\u7570\u306a\u308a\u3001\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u5b8c\u5168\u306a\u5d29\u58ca\u30b5\u30a4\u30af\u30eb\u304c\u767a\u751f\u3057\u307e\u3059\u3002 <em>\u30d0\u30eb\u30d6\u672c\u4f53\u5185<\/em>, \u305d\u306e\u305f\u3081\u3001\u30c8\u30ea\u30e0\u90e8\u54c1\u306e\u7834\u58ca\u529b\u306f\u306f\u308b\u304b\u306b\u5927\u304d\u3044\u3002.<\/p>\n\n\n\n<p>\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u3068\u30d5\u30e9\u30c3\u30b7\u30f3\u30b0\u306e\u7269\u7406\u7684\u6027\u8cea\u3001\u640d\u50b7\u30d1\u30bf\u30fc\u30f3\u3001\u5de5\u5b66\u7684\u5bfe\u7b56\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u306e\u8a73\u7d30\u306a\u8aac\u660e\u306f\u3001Carter Valve\u306e\u30ac\u30a4\u30c9\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/cartervalves.com\/ja\/cavitation-vs-flashing-in-control-valves\/\">\u5236\u5fa1\u5f01\u306e\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u3068\u30d5\u30e9\u30c3\u30b7\u30f3\u30b0<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5927\u9759\u8108\u53ce\u7e2e\u304c\u30c1\u30e7\u30fc\u30af\u30c9\u30d5\u30ed\u30fc\u3092\u5f15\u304d\u8d77\u3053\u3059\u5834\u5408<\/h2>\n\n\n\n<p>\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u8d85\u3048\u308b\u7b2c\u4e8c\u306e\u81e8\u754c\u95be\u5024\u304c\u3042\u308b\uff1a <strong>\u30c1\u30e7\u30fc\u30af\u30c9\u30d5\u30ed\u30fc<\/strong>.<\/p>\n\n\n\n<p>\u30c1\u30e7\u30fc\u30af\u30c9\u30d5\u30ed\u30fc\u306f\u3001\u5927\u9759\u8108\u306e\u53ce\u7e2e\u5727\u529b\u304c\u6db2\u4f53\u306e\u84b8\u6c17\u5727\u306b\u9054\u3057\u3001\u5b89\u5b9a\u3057\u305f\u84b8\u6c17\u76f8\u304c\u5674\u6d41\u5185\u306b\u5f62\u6210\u3055\u308c\u305f\u3068\u304d\u306b\u767a\u751f\u3059\u308b\u3002\u3053\u306e\u6642\u70b9\u3067\u3001\u4e0b\u6d41\u5074\u306e\u5727\u529b\u3092\u4e0b\u3052\u7d9a\u3051\u3066\u3082\u6d41\u91cf\u306f\u5897\u52a0\u3057\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u30d0\u30eb\u30d6\u306f \"\u30c1\u30e7\u30fc\u30af \"\u3055\u308c\u3001\u305d\u306e\u4e0a\u6d41\u6761\u4ef6\u4e0b\u3067\u306e\u6c34\u529b\u9650\u754c\u306b\u9054\u3057\u305f\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u3053\u308c\u306fIEC 60534-2-1\u3068ISA-75.01.01\u3067\u6b63\u5f0f\u306b\u898f\u5b9a\u3055\u308c\u3066\u3044\u308b\u6761\u4ef6\u3067\u3059\u3002\u30c1\u30e7\u30fc\u30af\u30c9\u30d5\u30ed\u30fc\u306e\u5727\u529b\u640d\u5931\u0394P_choked\u306f\u3001FL\u3068\u6d41\u4f53\u306e\u84b8\u6c17\u5727\u3092\u4f7f\u3063\u3066\u8a08\u7b97\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>\u0394P_choked\uff1dFL\u00b2\u00d7\uff08P\u2081-FF\u00d7Pv\uff09<\/strong><\/p><\/blockquote>\n\n\n\n<p>FF\u306f\u6db2\u4f53\u81e8\u754c\u5727\u529b\u6bd4\u4fc2\u6570\u3067\u3001\u7d040.96\uff5e0.28\u00d7\u221a(Pv\/Pc)\u3001Pc\u306f\u6d41\u4f53\u306e\u71b1\u529b\u5b66\u7684\u81e8\u754c\u5727\u529b\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1335\" height=\"880\" src=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-choked-flow.webp\" alt=\"IEC 60534-2-1\u306b\u3088\u308b\u30c1\u30e7\u30fc\u30af\u30c9\u30fb\u30d5\u30ed\u30fc\u66f2\u7dda-\u5927\u9759\u8108\u53ce\u7e2e\u5727\u304c\u84b8\u6c17\u5727\u306b\u9054\u3057\u305f\u3068\u304d\u306e\u30c1\u30e7\u30fc\u30af\u70b9\u306b\u304a\u3051\u308b\u504f\u5dee\u3092\u793a\u3059\u6d41\u91cf\u3068\u5727\u529b\u964d\u4e0b\u306e\u5e73\u65b9\u6839\u306e\u95a2\u4fc2\" class=\"wp-image-1294\" srcset=\"https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-choked-flow.webp 1335w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-choked-flow-300x198.webp 300w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-choked-flow-1024x675.webp 1024w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-choked-flow-768x506.webp 768w, https:\/\/cartervalves.com\/wp-content\/uploads\/2026\/05\/vena-contracta-choked-flow-18x12.webp 18w\" sizes=\"(max-width: 1335px) 100vw, 1335px\" \/><\/figure>\n\n\n\n<p>\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3068\u3063\u3066\u306e\u73fe\u5b9f\u7684\u306a\u5e30\u7d50\uff1a <strong>\u30d7\u30ed\u30bb\u30b9\u6761\u4ef6\u304c\u0394P\u3092\u0394P_choked\u3092\u8d85\u3048\u308b\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u305b\u305a\u306b\u3001P\u2081 - P\u2082\u3060\u3051\u3092\u4f7f\u3063\u3066\u30d0\u30eb\u30d6\u306e\u30b5\u30a4\u30ba\u3092\u6c7a\u3081\u308b\u3068\u3001\u30d0\u30eb\u30d6\u306f\u4e88\u6e2c\u3055\u308c\u305f\u6d41\u91cf\u3092\u4f9b\u7d66\u3057\u307e\u305b\u3093\u3002.<\/strong> \u5fc5\u8981\u306a\u4f5c\u52d5\u70b9\u3067\u5b89\u5b9a\u3059\u308b\u524d\u306b\u3001\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u3084\u30c1\u30e7\u30fc\u30af\u304c\u767a\u751f\u3057\u3001\u6a5f\u68b0\u7684\u306b\u6545\u969c\u3059\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3002.<\/p>\n\n\n\n<p>\u3053\u308c\u304c\u3001ANSI\/FCI 70-2\u3084IEC 60534\u306e\u30ea\u30fc\u30af\u3068\u30b5\u30a4\u30b8\u30f3\u30b0\u306e\u67a0\u7d44\u307f\u304c\u5b58\u5728\u3059\u308b\u7406\u7531\u3067\u3042\u308b\u3002\u898b\u76f4\u3057 <a href=\"https:\/\/cartervalves.com\/ja\/ansi-fci-70-2-iec-60534-control-valve-leakage-sizing\/\">\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d0\u30eb\u30d6\u306e\u6f0f\u308c\u30af\u30e9\u30b9\u3068\u30b5\u30a4\u30b8\u30f3\u30b0\u898f\u683c\u306e\u95a2\u4fc2<\/a> \u306f\u3001\u5927\u9759\u8108\u53ce\u7e2e\u3092\u7406\u89e3\u3057\u305f\u5f8c\u306e\u8ad6\u7406\u7684\u306a\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u3042\u308b\u3002.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5927\u9759\u8108\u53ce\u7e2e\u306e\u91cd\u75c7\u5ea6\u3092\u5236\u5fa1\u3059\u308b\u30d0\u30eb\u30d6\u306e\u8a2d\u8a08\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u30d0\u30eb\u30d6\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u904e\u9177\u306a\u6db2\u4f53\u30b5\u30fc\u30d3\u30b9\u306b\u304a\u3051\u308b\u5927\u9759\u8108\u53ce\u7e2e\u306e\u640d\u50b7\u306e\u53ef\u80fd\u6027\u3092\u5236\u9650\u3059\u308b\u305f\u3081\u306e\u624b\u6bb5\u3092\u3044\u304f\u3064\u304b\u6301\u3063\u3066\u3044\u308b\uff1a<\/p>\n\n\n\n<p><strong>\u30de\u30eb\u30c1\u30b9\u30c6\u30fc\u30b8\u30c8\u30ea\u30e0\uff08\u6bb5\u968e\u7684\u6e1b\u5727\uff09<\/strong> - \u591a\u6bb5\u30b1\u30fc\u30b8\u307e\u305f\u306f\u76f4\u5217\u30c8\u30ea\u30e0\u306f\u30011\u3064\u306e\u5236\u9650\u5168\u4f53\u3067\u0394P\u3092\u5b8c\u5168\u306b\u964d\u4e0b\u3055\u305b\u308b\u4ee3\u308f\u308a\u306b\u3001\u8907\u6570\u306e\u6bb5\u306b\u308f\u305f\u3063\u3066\u6bb5\u968e\u7684\u306b\u5727\u529b\u3092\u964d\u4e0b\u3055\u305b\u307e\u3059\u3002\u5404\u6bb5\u968e\u306f\u3001\u72ec\u81ea\u306e\u5927\u9759\u8108\u53ce\u7e2e\u3092\u6301\u3061\u307e\u3059\u304c\u3001\u5404\u6bb5\u968e\u306e\u30ed\u30fc\u30ab\u30eb\u6700\u5c0f\u5727\u529b\u306f\u3001\u5404\u500b\u5225\u306e\u5727\u529b\u964d\u4e0b\u304c\u5168\u4f53\u306e\u307b\u3093\u306e\u4e00\u90e8\u3067\u3042\u308b\u305f\u3081\u3001Pv \u4ee5\u4e0a\u3092\u7dad\u6301\u3057\u307e\u3059\u3002\u30b0\u30ed\u30fc\u30d6\u30d0\u30eb\u30d6\u306e\u30a2\u30f3\u30c1\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u30c8\u30ea\u30e0\u8a2d\u8a08\u306f\u3001\u3053\u306e\u539f\u7406\u3092\u76f4\u63a5\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<p><strong>\u9ad8FL\u30d0\u30eb\u30d6\u306e\u9078\u629e<\/strong> - \u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u4e88\u6e2c\u3055\u308c\u308b\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u3001\u3088\u308a\u9ad8\u3044FL\u5b9a\u683c\u3092\u6301\u3064\u30d0\u30eb\u30d6\u5f62\u72b6\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3001\u540c\u3058P\u2081\u3068P\u2082\u306b\u5bfe\u3057\u3066P_vc\u3092\u3055\u3089\u306bPv\u4ee5\u4e0a\u306b\u4fdd\u3064\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u30b0\u30ed\u30fc\u30d6\u30d0\u30eb\u30d6\u306f\u3001\u9ad8\u0394P\u6db2\u4f53\u696d\u52d9\u306b\u304a\u3044\u3066\u3001\u7279\u306b\u3053\u306e\u7406\u7531\u304b\u3089\u30ed\u30fc\u30bf\u30ea\u30fc\u30d0\u30eb\u30d6\u3088\u308a\u3082\u6307\u5b9a\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3002.<\/p>\n\n\n\n<p><strong>\u786c\u8cea\u3067\u6d78\u98df\u306b\u5f37\u3044\u7d20\u6750<\/strong> - \u30d7\u30ed\u30bb\u30b9\u6761\u4ef6\u306b\u3088\u308a\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u907f\u3051\u3089\u308c\u306a\u3044\u5834\u5408\uff08\u4f8b\u3048\u3070\u3001\u30d0\u30eb \u30d6\u306e\u8a2d\u8a08\u306b\u95a2\u4fc2\u306a\u304f\u30d5\u30e9\u30c3\u30b7\u30f3\u30b0\u304c\u767a\u751f\u3059\u308b\u5834\u5408\u3001\u307e\u305f\u306f\u30b3\u30b9\u30c8\u4e0a\u306e\u5236\u7d04\u306b\u3088\u308a \u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u3042\u308b\u7a0b\u5ea6\u8a31\u5bb9\u3067\u304d\u308b\u5834\u5408\uff09\u3001\u30c8\u30ea\u30e0\u8868\u9762\u306f\u30b3\u30d0\u30eb\u30c8\u30af\u30ed\u30e0 \u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u306e\u3088\u3046\u306a\u786c\u8cea\u5408\u91d1\u3067\u4fdd\u8b77\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u3001\u5b54\u98df\u3092\u9664\u53bb\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u5b54\u98df\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u62b5\u6297\u3059\u308b\u3053\u3068\u3067\u3001\u8010\u7528\u5e74\u6570\u3092\u5ef6\u3070\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p><strong>\u4e0b\u6d41\u306e\u901f\u5ea6\u7ba1\u7406<\/strong> - 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<a href=\"https:\/\/cartervalves.com\/ja\/product-categories\/isolation-valves\/\">\u30a2\u30a4\u30bd\u30ec\u30fc\u30b7\u30e7\u30f3\u30d0\u30eb\u30d6\u7bc4\u56f2<\/a> \u30c8\u30ea\u30d7\u30eb\u30aa\u30d5\u30bb\u30c3\u30c8\u30fb\u30d0\u30bf\u30d5\u30e9\u30a4\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3084\u30b7\u30c3\u30af\u30b9\u30a8\u30bb\u30f3\u30c8\u30ea\u30c3\u30af\u30fb\u30d0\u30bf\u30d5\u30e9\u30a4\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306a\u3069\u3001\u5927\u9759\u8108\u53ce\u7e2e\u306b\u8d77\u56e0\u3059\u308b\u6d78\u98df\u304c\u30b7\u30fc\u30c8\u8868\u9762\u3092\u7d4c\u6642\u7684\u306b\u52a3\u5316\u3055\u305b\u308b\u969b\u306b\u751f\u3058\u308b\u30b7\u30fc\u30ea\u30f3\u30b0\u306e\u8ab2\u984c\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u30ac\u30b9\u304a\u3088\u3073\u30b9\u30c1\u30fc\u30e0\u30fb\u30b5\u30fc\u30d3\u30b9\u306b\u304a\u3051\u308b\u30d9\u30ca\u30fb\u30b3\u30f3\u30c8\u30e9\u30af\u30bf<\/h2>\n\n\n\n<p>\u5927\u9759\u8108\u53ce\u7e2e\u300d\u3068\u3044\u3046\u7528\u8a9e\u306f\u3001\u6db2\u4f53\u30b5\u30fc\u30d3\u30b9\uff08\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u76f4\u63a5\u306e\u539f\u56e0\uff09\u306e\u8b70\u8ad6\u306b\u6700\u3082\u3088\u304f\u767b\u5834\u3059\u308b\u304c\u3001\u540c\u3058\u6d41\u308c\u306e\u53ce\u7e2e\u73fe\u8c61\u304c\u30ac\u30b9\u3084\u84b8\u6c17\u30b5\u30fc\u30d3\u30b9\u3067\u3082\u767a\u751f\u3057\u3001\u7d50\u679c\u306f\u7570\u306a\u308b\u304c\u540c\u69d8\u306b\u91cd\u8981\u3067\u3042\u308b\u3002.<\/p>\n\n\n\n<p>\u5727\u7e2e\u6027\u6c17\u4f53\u6d41\u3067\u306f\u3001\u7b49\u4fa1\u81e8\u754c\u6761\u4ef6\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308b\u3002 <strong>\u5927\u9759\u8108\u306e\u97f3\u901f<\/strong>. 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<a href=\"https:\/\/cartervalves.com\/ja\/service\/\">\u30ab\u30fc\u30bf\u30fc\u30d0\u30eb\u30d6 \u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\uff06\u30b5\u30fc\u30d3\u30b9\u30c1\u30fc\u30e0<\/a> \u306f\u3001\u77f3\u6cb9\u30fb\u30ac\u30b9\u3001LNG\u3001FCCU\u3001\u767a\u96fb\u306a\u3069\u3001\u8907\u6570\u306e\u6d41\u6cc1\u304c\u540c\u6642\u306b\u5b58\u5728\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u74b0\u5883\u3067\u64cd\u696d\u3059\u308b\u304a\u5ba2\u69d8\u306e\u305f\u3081\u306b\u3001\u30d0\u30eb\u30d6\u9078\u5b9a\u306e\u4e00\u74b0\u3068\u3057\u3066\u3001\u3053\u3046\u3057\u305f\u6761\u4ef6\u7279\u6709\u306e\u5f71\u97ff\u3092\u514b\u670d\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<p><strong>\u5927\u9759\u8108\u3068\u5f01\u5ea7\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/strong> 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Cv\u306f\u3001\u4e0e\u3048\u3089\u308c\u305f\u5727\u529b\u964d\u4e0b\u306b\u304a\u3051\u308b\u30d0\u30eb\u30d6\u306e\u5168\u4f53\u7684\u306a\u6d41\u91cf\u80fd\u529b\u3092\u8868\u3057\u307e\u3059\u3002Cv\u306f\u5927\u9759\u8108\u306e\u5c40\u6240\u7684\u306a\u5727\u529b\u72b6\u614b\u3092\u793a\u3059\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002Cv\u304c\u540c\u3058\u3067\u3082FL\u30d5\u30a1\u30af\u30bf\u30fc\u304c\u7570\u306a\u308b2\u3064\u306e\u30d0\u30eb\u30d6\u306f\u3001\u540c\u3058P\u2081\u3001P\u2082\u3001\u6d41\u4f53\u6761\u4ef6\u3067\u3082\u5185\u90e8\u6700\u4f4e\u5727\u529b\u304c\u5927\u304d\u304f\u7570\u306a\u308a\u3001\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u3057\u304d\u3044\u5024\u3082\u7570\u306a\u308a\u307e\u3059\u3002\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u30ea\u30b9\u30af\u304c\u3042\u308b\u5834\u5408\u3001Cv\u3060\u3051\u3067\u306f\u6db2\u4f53\u306e\u30b5\u30a4\u30b8\u30f3\u30b0\u306b\u306f\u4e0d\u5341\u5206\u3067\u3059\u3002.<\/p>\n\n\n\n<p><strong>\u30d0\u30eb\u30d6\u30e1\u30fc\u30ab\u30fc\u306b\u3088\u308bFL\u306e\u6e2c\u5b9a\u65b9\u6cd5\u306f\uff1f<\/strong> \u30e1\u30fc\u30ab\u30fc\u306f\u3001\u6d41\u91cf\u304c\u5b8c\u5168\u306b\u30c1\u30e7\u30fc\u30af\u3055\u308c\u308b\u307e\u3067\u3001\u3064\u307e\u308a\u4e0b\u6d41\u5074\u306e\u5727\u529b\u3092\u3055\u3089\u306b\u4e0b\u3052\u3066\u3082\u8ffd\u52a0\u306e\u6d41\u91cf\u304c\u767a\u751f\u3057\u306a\u304f\u306a\u308b\u307e\u3067\u3001\u5727\u529b\u964d\u4e0b\u3092\u5f90\u3005\u306b\u5897\u52a0\u3055\u305b\u306a\u304c\u3089\u30d0\u30eb\u30d6\u3092\u30c6\u30b9\u30c8\u3059\u308b\u3053\u3068\u3067FL\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002FL\u5024\u306f\u3001\u975e\u30c1\u30e7\u30fc\u30af\u72b6\u614b\u3068\u30c1\u30e7\u30fc\u30af\u72b6\u614b\u306e\u9593\u306e\u79fb\u884c\u70b9\u306b\u304a\u3051\u308bIEC 60534-2-1\u306e\u30c1\u30e7\u30fc\u30af\u6d41\u91cf\u65b9\u7a0b\u5f0f\u304b\u3089\u9006\u7b97\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<p><strong>\u5927\u9759\u8108\u306e\u4f4d\u7f6e\u306f\u30c7\u30b6\u30a4\u30f3\u306b\u3088\u3063\u3066\u5909\u3048\u3089\u308c\u308b\u306e\u304b\uff1f<\/strong> \u3042\u308b\u7a0b\u5ea6\u306f\u305d\u3046\u3060\u3002\u591a\u6bb5\u968e\u30c8\u30ea\u30e0\u8a2d\u8a08\u306f\u3001\u5927\u9759\u8108\u53ce\u7e2e\u3092\u4e00\u70b9\u306b\u96c6\u4e2d\u3055\u305b\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u8907\u6570\u306e\u5c0f\u6bb5\u968e\u306b\u52b9\u679c\u7684\u306b\u5206\u6563\u3055\u305b\u308b\u3002\u6d41\u7dda\u578b\u306e\u30d0\u30eb\u30d6\u30dc\u30c7\u30a3\u5f62\u72b6\u306f\u3001\u53ce\u7e2e\u306e\u7a0b\u5ea6\u3092\u8efd\u6e1b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u73fe\u8c61\u305d\u306e\u3082\u306e\u3092\u306a\u304f\u3059\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093-\u3053\u308c\u306f\u6d41\u4f53\u529b\u5b66\u3092\u652f\u914d\u3059\u308b\u4fdd\u5b58\u5247\u306e\u7d50\u679c\u3067\u3059\u3002\u3053\u308c\u306f\u6d41\u4f53\u529b\u5b66\u3092\u652f\u914d\u3059\u308b\u4fdd\u5b58\u5247\u306e\u7d50\u679c\u3067\u3042\u308a\u3001\u5f62\u72b6\u3001\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u3001\u6750\u6599\u306e\u9078\u629e\u306b\u3088\u3063\u3066\u306e\u307f\u7ba1\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n\n<p><strong>\u5927\u9759\u8108\u53ce\u7e2e\u306f\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d0\u30eb\u30d6\u3060\u3051\u3067\u306a\u304f\u3001\u30a2\u30a4\u30bd\u30ec\u30fc\u30b7\u30e7\u30f3\u30d0\u30eb\u30d6\u306b\u3082\u5f71\u97ff\u3057\u307e\u3059\u304b\uff1f<\/strong> \u901a\u5e38\u3001\u9694\u96e2\u5f01\u306f\u7d5e\u3089\u308c\u308b\u3053\u3068\u304c\u306a\u3044\u305f\u3081\u3001\u901a\u5e38\u904b\u8ee2\u6642\u306e\u5927\u9759\u8108\u53ce\u7e2e\u306e\u5f71\u97ff\u306f\u6700\u5c0f\u9650\u3067\u3059\u3002\u61f8\u5ff5\u3055\u308c\u308b\u306e\u306f\u3001\u5236\u5fa1\u3055\u308c\u305f\u958b\u9589\u6642\u3084\u3001\u624b\u52d5\u7d5e\u308a\u306e\u305f\u3081\u306b\u9694\u96e2\u5f01\u304c\u90e8\u5206\u7684\u306b\u958b\u3044\u305f\u5834\u5408\u3067\u3059\u3002\u30d0\u30eb\u30d6\u306e\u6f0f\u308c\u30af\u30e9\u30b9\u3068\u30d7\u30e9\u30f3\u30c8\u904b\u8ee2\u306b\u304a\u3051\u308b\u305d\u306e\u5b9f\u969b\u7684\u306a\u610f\u5473\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u30ac\u30a4\u30c9\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002 <a href=\"https:\/\/cartervalves.com\/ja\/valve-leakage-classes-api-598-fci-70-2-iso-5208\/\">API 598\u3001ANSI\/FCI 70-2\u3001ISO 5208 \u6f0f\u6d29\u898f\u683c<\/a>.<\/p>\n\n\n\n<p><strong>\u5927\u9759\u8108\u53ce\u7e2e\u306b\u3088\u308b\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u767a\u751f\u3059\u308b\u9a12\u97f3\u30ec\u30d9\u30eb\u306f\uff1f<\/strong> \u3072\u3069\u3044\u5834\u5408\u306b\u306f\u3001\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u8d77\u3053\u3059\u5236\u5fa1\u5f01\u304b\u3089\u306e\u6d41\u4f53\u529b\u5b66\u7684\u9a12\u97f3\u306f\u3001\u914d\u7ba1\u58c1\u9762\u3067 110 dB \u3092\u8d85\u3048\u308b\u3053\u3068\u304c\u3042\u308a\u3001\u3053\u308c\u306f OSHA \u306e 8 \u6642\u9593\u30b7\u30d5\u30c8\u306e\u52b4\u50cd\u9a12\u97f3\u66b4\u9732\u9650\u5ea6\u3092\u306f\u308b\u304b\u306b\u8d85\u3048\u307e\u3059\u3002IEC 60534-8-4\u306f\u3001\u5927\u9759\u8108\u53ce\u7e2e\u6761\u4ef6\u3001\u6a5f\u68b0\u7684\u6d41\u529b\u3001\u304a\u3088\u3073\u914d\u7ba1\u58c1\u306e\u4f1d\u9054\u640d\u5931\u306b\u57fa\u3065\u3044\u3066\u3001\u6db2\u4f53\u5236\u5fa1\u5f01\u304b\u3089\u306e\u6d41\u4f53\u529b\u5b66\u7684\u9a12\u97f3\u30ec\u30d9\u30eb\u3092\u4e88\u6e2c\u3059\u308b\u305f\u3081\u306e\u6a19\u6e96\u7684\u306a\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u30ea\u30ad\u30c3\u30c9\u30b5\u30fc\u30d3\u30b9\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u95a2\u3059\u308b\u6280\u8853\u76f8\u8ac7\u306e\u30ea\u30af\u30a8\u30b9\u30c8<\/h2>\n\n\n\n<p>\u6db2\u4f53\u30b5\u30fc\u30d3\u30b9\u3001\u7279\u306b\u9ad8\u0394P\u3001\u9ad8\u6e29\u3001\u4e8c\u76f8\u6761\u4ef6\u4e0b\u3067\u5236\u5fa1\u5f01\u306e\u4ed5\u69d8\u6c7a\u5b9a\u3084\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u884c\u3046\u5834\u5408\u3001\u7279\u5b9a\u306e\u4efb\u52d9\u306b\u304a\u3051\u308b\u30d9\u30ca\u30b3\u30f3\u30c8\u30e9\u30af\u30bf\u6761\u4ef6\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u6b63\u3057\u3044\u51fa\u767a\u70b9\u3068\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u30ab\u30fc\u30bf\u30fc\u30d0\u30eb\u30d6\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30c1\u30fc\u30e0\u306f\u3001\u77f3\u6cb9\u30fb\u30ac\u30b9\u3001LNG\u3001\u5316\u5b66\u51e6\u7406\u3001\u767a\u96fb\u306a\u3069\u306e\u30d7\u30ed\u30bb\u30b9\u6761\u4ef6\u306b\u304a\u3044\u3066\u3001\u30d0\u30eb\u30d6\u306e\u30b5\u30a4\u30b8\u30f3\u30b0\u3001FL\u30d5\u30a1\u30af\u30bf\u30fc\u306e\u691c\u8a3c\u3001\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u30ea\u30b9\u30af\u306e\u8a55\u4fa1\u3092\u884c\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u6a19\u6e96\u7684\u306a\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306e\u30b5\u30a4\u30b8\u30f3\u30b0\u3067\u306f\u5341\u5206\u3067\u306a\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u306f\u3001IEC 60534-2-1\u306b\u7167\u3089\u3057\u305fFL\u30c7\u30fc\u30bf\u3068\u30b5\u30a4\u30b8\u30f3\u30b0\u30c1\u30a7\u30c3\u30af\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p><strong>\u304a\u5ba2\u69d8\u306e\u4f7f\u7528\u6761\u4ef6\uff08\u6d41\u4f53\u3001P\u2081\u3001P\u2082\u3001\u6e29\u5ea6\u3001\u6d41\u91cf\uff09\u3092\u304a\u805e\u304b\u305b\u3044\u305f\u3060\u3051\u308c\u3070\u3001\u304a\u5ba2\u69d8\u306e\u4efb\u52d9\u306b\u9069\u3057\u305f\u30c8\u30ea\u30e0\u5f62\u72b6\u3068\u6750\u6599\u4ed5\u69d8\u306e\u69cb\u6210\u3092\u63d0\u6848\u3044\u305f\u3057\u307e\u3059\u3002.<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/cartervalves.com\/ja\/contact\/\">\u6280\u8853\u76f8\u8ac7\u3092\u7533\u3057\u8fbc\u3080<\/a><\/p>\n\n\n\n<p>\u79c1\u305f\u3061\u3092\u63a2\u308b <a href=\"https:\/\/cartervalves.com\/ja\/product-categories\/control-valves\/\">\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d0\u30eb\u30d6\u7bc4\u56f2<\/a> \u82db\u9177\u306a\u6db2\u4f53\u304a\u3088\u3073\u30ac\u30b9\u30b5\u30fc\u30d3\u30b9\u7528\u9014\u5411\u3051\u3002.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u53c2\u8003\u6587\u732e<\/h2>\n\n\n\n<p>1.Torricelli, E. (1643) - \u30aa\u30ea\u30d5\u30a3\u30b9\u30d5\u30ed\u30fc\u306b\u304a\u3051\u308b\u5927\u9759\u8108\u53ce\u7e2e\u306e\u539f\u8a18\u8ff0\u3002\u5f15\u7528\u6587\u732e\u30a6\u30a3\u30ad\u30da\u30c7\u30a3\u30a2\u3001, <em>\u53ce\u7e2e\u5927\u9759\u8108<\/em> \u2014 <a href=\"https:\/\/en.wikipedia.org\/wiki\/Vena_contracta\" target=\"_blank\" rel=\"noopener\">https:\/\/en.wikipedia.org\/wiki\/Vena_contracta<\/a> 2.IEC 60534-2-1 <em>\u5de5\u696d\u7528\u30d7\u30ed\u30bb\u30b9\u5236\u5fa1\u30d0\u30eb\u30d6 - \u6d41\u91cf\u5bb9\u91cf - \u8a2d\u7f6e\u6761\u4ef6\u4e0b\u3067\u306e\u6d41\u4f53\u306e\u6d41\u308c\u306b\u95a2\u3059\u308b\u30b5\u30a4\u30b8\u30f3\u30b0\u65b9\u7a0b\u5f0f<\/em> - \u56fd\u969b\u96fb\u6c17\u6a19\u6e96\u4f1a\u8b70 3.ISA-75.01.01 <em>\u8abf\u7bc0\u5f01\u306e\u30b5\u30a4\u30ba\u6c7a\u5b9a\u306e\u305f\u3081\u306e\u6d41\u91cf\u65b9\u7a0b\u5f0f<\/em> - \u56fd\u969b\u30aa\u30fc\u30c8\u30e1\u30fc\u30b7\u30e7\u30f3\u5b66\u4f1a 4.\u30e8\u30eb\u30c0\u30f3\u30d0\u30eb\u30d6 <em>\u5727\u529b\u56de\u5fa9\u4fc2\u6570\u306e\u8aac\u660e<\/em> \u2014 <a href=\"https:\/\/www.jordanvalve.com\/resource\/pressure-recovery-factor-explained\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.jordanvalve.com\/resource\/pressure-recovery-factor-explained\/<\/a> 5.\u30f4\u30a1\u30ea\u30f3\u30b3\u30fc\u30dd\u30ec\u30fc\u30b7\u30e7\u30f3 <em>\u5927\u9759\u8108\u306e\u5727\u529b\u3068\u5236\u5fa1\u5f01\u5185\u306e\u6db2\u4f53\u306e\u6d41\u308c<\/em> \u2014 <a href=\"https:\/\/www.valin.com\/resources\/whitepapers\/pressure-vena-contracta-liquid-flow-control-valve\" target=\"_blank\" rel=\"noopener\">https:\/\/www.valin.com\/resources\/whitepapers\/pressure-vena-contracta-liquid-flow-control-valve<\/a> 6.\u30f4\u30a1\u30ea\u30f3\u30b3\u30fc\u30dd\u30ec\u30fc\u30b7\u30e7\u30f3 <em>\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d0\u30eb\u30d6 \u6db2\u6d41\uff1a\u30c1\u30e7\u30fc\u30af\u30c9\u30d5\u30ed\u30fc\u3001\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u3001\u30d5\u30e9\u30c3\u30b7\u30f3\u30b0<\/em> \u2014 <a href=\"https:\/\/www.valin.com\/resources\/blog\/control-valve-liquid-flow-choked-flow-cavitation-flashing\" target=\"_blank\" rel=\"noopener\">https:\/\/www.valin.com\/resources\/blog\/control-valve-liquid-flow-choked-flow-cavitation-flashing<\/a> 7.\u30a8\u30de\u30fc\u30bd\u30f3 \/ \u30d5\u30a3\u30c3\u30b7\u30e3\u30fc <em>\u30d5\u30a3\u30c3\u30b7\u30e3\u30fc\u30d0\u30eb\u30d6\u306e\u30c1\u30e7\u30fc\u30af\u30c9\u30d5\u30ed\u30fc\u3092\u7406\u89e3\u3059\u308b<\/em> (\u88fd\u54c1\u60c5\u5831) <a href=\"https:\/\/www.emerson.com\/documents\/automation\/product-bulletin-understanding-choked-flow-in-fisher-valves-en-122950.pdf\" target=\"_blank\" rel=\"noopener\">https:\/\/www.emerson.com\/documents\/automation\/product-bulletin-understanding-choked-flow-in-fisher-valves-en-122950.pdf<\/a> 8.\u30a2\u30ea\u30ab\u30c3\u30c8\u30fb\u30b5\u30a4\u30a8\u30f3\u30c6\u30a3\u30d5\u30a3\u30c3\u30af <em>\u30de\u30b9\u30d5\u30ed\u30fc\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306b\u304a\u3051\u308b\u30b8\u30a7\u30c3\u30c6\u30a3\u30f3\u30b0\u306e\u56de\u907f\uff1a\u5927\u9759\u8108<\/em> \u2014 <a href=\"https:\/\/www.alicat.com\/support\/choosing-an-instrument-avoiding-jetting-in-mass-flow-controllers-the-vena-contracta\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.alicat.com\/support\/choosing-an-instrument-avoiding-jetting-in-mass-flow-controllers-the-vena-contracta\/<\/a> 9.\u30a6\u30a3\u30ea\u30a2\u30e0\u30ba\u30d0\u30eb\u30d6 <em>\u30ad\u30e3\u30d3\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u4ee3\u511f\uff1a\u8a70\u307e\u3063\u305f\u6d41\u308c\u304c\u30d0\u30eb\u30d6\u5185\u90e8\u3092\u7834\u58ca\u3059\u308b\u30e1\u30ab\u30cb\u30ba\u30e0<\/em> \u2014 <a href=\"https:\/\/www.williamsvalve.com\/blog\/cost-of-cavitation-how-choked-flow-destroys-valve-internals\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.williamsvalve.com\/blog\/cost-of-cavitation-how-choked-flow-destroys-valve-internals\/<\/a> 10.\u914d\u7ba1\u8a2d\u8a08\u8005 <em>\u5951\u7d04\u5927\u9759\u8108<\/em> \u2014 <a href=\"https:\/\/www.piping-designer.com\/index.php\/properties\/fluid-mechanics\/2529-vena-contracta\" target=\"_blank\" rel=\"noopener\">https:\/\/www.piping-designer.com\/index.php\/properties\/fluid-mechanics\/2529-vena-contracta<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>The Pressure Drop You Calculated Is Not the Pressure That Damages Your Valve When engineers size a control valve for liquid service, they typically focus on the pressure drop between inlet and outlet \u2014 P\u2081 minus P\u2082. That number drives the Cv calculation, it goes into the data sheet, and it looks right on paper. But the pressure that actually damages a valve trim never appears in that equation. It happens inside the valve body, at a point where the fluid jet contracts to its minimum cross-section and the local pressure drops far below P\u2082. If that internal minimum pressure falls below the vapour pressure of the liquid, vapour bubbles [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1290,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1291","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/cartervalves.com\/ja\/wp-json\/wp\/v2\/posts\/1291","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cartervalves.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cartervalves.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cartervalves.com\/ja\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cartervalves.com\/ja\/wp-json\/wp\/v2\/comments?post=1291"}],"version-history":[{"count":1,"href":"https:\/\/cartervalves.com\/ja\/wp-json\/wp\/v2\/posts\/1291\/revisions"}],"predecessor-version":[{"id":1295,"href":"https:\/\/cartervalves.com\/ja\/wp-json\/wp\/v2\/posts\/1291\/revisions\/1295"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cartervalves.com\/ja\/wp-json\/wp\/v2\/media\/1290"}],"wp:attachment":[{"href":"https:\/\/cartervalves.com\/ja\/wp-json\/wp\/v2\/media?parent=1291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cartervalves.com\/ja\/wp-json\/wp\/v2\/categories?post=1291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cartervalves.com\/ja\/wp-json\/wp\/v2\/tags?post=1291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}