{"id":15459,"date":"2026-07-15T03:12:31","date_gmt":"2026-07-15T03:12:31","guid":{"rendered":"https:\/\/npt-lok.com\/?p=15459"},"modified":"2026-08-18T07:27:08","modified_gmt":"2026-08-18T07:27:08","slug":"%e3%83%8b%e3%83%bc%e3%83%89%e3%83%ab%e3%83%90%e3%83%ab%e3%83%96%e3%81%ae%e6%b5%81%e9%87%8f%e5%88%b6%e5%be%a1%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bcv%e5%80%a4%e3%81%ae%e8%a8%88%e7%ae%97%e3%81%a8%e3%83%90","status":"publish","type":"post","link":"https:\/\/npt-lok.com\/ja\/needle-valve-flow-control-cv-calculation-and-valve-sizing\/","title":{"rendered":"\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u6d41\u91cf\u5236\u5fa1\uff1aCv\u5024\u306e\u8a08\u7b97\u3068\u30d0\u30eb\u30d6\u30b5\u30a4\u30ba\u9078\u5b9a"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u904b\u8ee2\u6761\u4ef6\u304b\u3089\u5fc5\u8981\u306aCv\u5024\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u3068\u3001\u6b63\u78ba\u306a\u6d41\u91cf\u5236\u5fa1\u306e\u305f\u3081\u306b\u9069\u5207\u306a\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u306e\u30b5\u30a4\u30ba\u3092\u9078\u629e\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002.<\/span><span style=\"font-size: 16px; font-weight: 400;\">, \u3001\u305d\u3057\u3066\u6e29\u5ea6\u3002.<\/span><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-15460\" style=\"font-style: inherit; font-weight: inherit;\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/07\/needle-valves-profile.png\" alt=\"needle-valve-profile\" width=\"890\" height=\"787\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/07\/needle-valves-profile.png 890w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/07\/needle-valves-profile-768x679.png 768w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/07\/needle-valves-profile-14x12.png 14w\" sizes=\"auto, (max-width: 890px) 100vw, 890px\" \/><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-grey 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=\"Toggle Table of Content\"><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: #999;color:#999\" 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: #999;color:#999\" 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-4'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/npt-lok.com\/ja\/needle-valve-flow-control-cv-calculation-and-valve-sizing\/#What_Happens_If_Cv_Is_Wrong\" >CV\u5024\u304c\u9593\u9055\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/npt-lok.com\/ja\/needle-valve-flow-control-cv-calculation-and-valve-sizing\/#How_to_Calculate_the_Required_Cv_for_a_Needle_Valve_%EF%BC%9F\" >\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u306b\u5fc5\u8981\u306aCv\u5024\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u306f\uff1f<\/a><ul class='ez-toc-list-level-5' ><li class='ez-toc-heading-level-5'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/npt-lok.com\/ja\/needle-valve-flow-control-cv-calculation-and-valve-sizing\/#Step_1_Collect_Your_Data\" >\u30b9\u30c6\u30c3\u30d71\uff1a\u30c7\u30fc\u30bf\u306e\u53ce\u96c6<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-5'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/npt-lok.com\/ja\/needle-valve-flow-control-cv-calculation-and-valve-sizing\/#Step_2_Plug_Into_the_Right_Formula\" >\u30b9\u30c6\u30c3\u30d72\uff1a\u9069\u5207\u306a\u6570\u5f0f\u306b\u4ee3\u5165\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-5'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/npt-lok.com\/ja\/needle-valve-flow-control-cv-calculation-and-valve-sizing\/#Step_3_Select_Valve_Size_and_Verify_Cv\" >\u30b9\u30c6\u30c3\u30d73\uff1a\u30d0\u30eb\u30d6\u30b5\u30a4\u30ba\u3092\u9078\u629e\u3057\u3001Cv\u5024\u3092\u78ba\u8a8d\u3059\u308b<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/npt-lok.com\/ja\/needle-valve-flow-control-cv-calculation-and-valve-sizing\/#Common_Mistakes\" >\u3088\u304f\u3042\u308b\u9593\u9055\u3044<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/npt-lok.com\/ja\/needle-valve-flow-control-cv-calculation-and-valve-sizing\/#Summary_Cv_Sizing_in_Four_Steps\" >\u6982\u8981\uff1aCV\u30b5\u30a4\u30b8\u30f3\u30b0\u306e4\u3064\u306e\u30b9\u30c6\u30c3\u30d7<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/npt-lok.com\/ja\/needle-valve-flow-control-cv-calculation-and-valve-sizing\/#FAQ\" >\u3088\u304f\u3042\u308b\u8cea\u554f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/npt-lok.com\/ja\/needle-valve-flow-control-cv-calculation-and-valve-sizing\/#We_Make_Needle_Valves\" >\u5f53\u793e\u306f\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u3092\u88fd\u9020\u3057\u3066\u3044\u307e\u3059<\/a><\/li><\/ul><\/nav><\/div>\n<h4><span class=\"ez-toc-section\" id=\"What_Happens_If_Cv_Is_Wrong\"><\/span><strong>CV\u5024\u304c\u9593\u9055\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<table>\n<tbody>\n<tr>\n<td><b>Cv\u304c\u5927\u304d\u3059\u304e\u308b\u5834\u5408<\/b><\/td>\n<td><b>Cv\u304c\u5c0f\u3055\u3059\u304e\u308b\u5834\u5408<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u5236\u5fa1\u7cbe\u5ea6\u304c\u4f4e\u3044<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u6d41\u91cf\u5bb9\u91cf\u304c\u4e0d\u8db3\u3057\u3066\u3044\u308b<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u6709\u52b9\u306a\u8abf\u6574\u7bc4\u56f2\u304c\u9650\u3089\u308c\u3066\u3044\u308b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u5fc5\u8981\u306a\u6d41\u91cf\u306b\u9054\u3057\u307e\u305b\u3093<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u5c0f\u3055\u306a\u8abf\u6574\u3067\u5927\u304d\u306a\u6d41\u91cf\u5909\u5316\u304c\u751f\u3058\u308b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u30b7\u30b9\u30c6\u30e0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5236\u9650\u3059\u308b<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-size: 16px; font-weight: 400;\">\u3057\u305f\u304c\u3063\u3066\u3001\u5fc5\u8981\u306aCv\u5024\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3001\u9069\u5207\u306a\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u3092\u9078\u629e\u3059\u308b\u305f\u3081\u306e\u7b2c\u4e00\u6b69\u3068\u306a\u308b\u3002.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"How_to_Calculate_the_Required_Cv_for_a_Needle_Valve_%EF%BC%9F\"><\/span><strong>\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u306b\u5fc5\u8981\u306aCv\u5024\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u306f\uff1f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<h5><span class=\"ez-toc-section\" id=\"Step_1_Collect_Your_Data\"><\/span><span style=\"font-weight: 400;\">\u30b9\u30c6\u30c3\u30d71\uff1a\u30c7\u30fc\u30bf\u306e\u53ce\u96c6<\/span><span class=\"ez-toc-section-end\"><\/span><\/h5>\n<p><span style=\"font-weight: 400;\">\u5fc5\u8981\u306aCV\u5024\u3092\u8a08\u7b97\u3059\u308b\u524d\u306b\u3001\u57fa\u672c\u7684\u306a\u30c7\u30fc\u30bf\u3092\u53ce\u96c6\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u57f9\u5730\u306b\u3088\u3063\u3066\u30c7\u30fc\u30bf\u306b\u82e5\u5e72\u306e\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002.\u00a0<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>\u30d1\u30e9\u30e1\u30fc\u30bf<\/b><\/td>\n<td><b>\u6db2\u4f53<\/b><\/td>\n<td><b>\u30ac\u30b9<\/b><\/td>\n<td><b>\u6ce8\u8a18<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u6d41\u91cf\uff08Q\uff09<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2713<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2713<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u6db2\u4f53\u306e\u5834\u5408\u306fGPM\u3001\u6c17\u4f53\u306e\u5834\u5408\u306fSCFH<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u5165\u53e3\u5727\u529b\uff08P1\uff09<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2713<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2713<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u6c17\u4f53\u306e\u5834\u5408\u306f\u3001\u7d76\u5bfe\u5727\u529b\uff08psia\uff09\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u51fa\u53e3\u5727\u529b\uff08P2\uff09<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2713<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2713<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u0394P\u306e\u8a08\u7b97\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u5727\u529b\u964d\u4e0b(\u0394P)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2713<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2713<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u0394P = P1 - P2<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u6bd4\u91cd\uff08SG\uff09<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2713<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2713<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u83ef\u6c0f60\u5ea6\u306e\u6c34\uff1d1.0\u3002;<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">\u83ef\u6c0f70\u5ea6\u3001\u6c17\u572714.7psi\u306e\u7a7a\u6c17\uff1d1.0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u6e29\u5ea6\uff08T\uff09<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2014<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u2713<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u7d76\u5bfe\u6e29\u5ea6\uff08\u83ef\u6c0f\uff0b460\u5ea6\uff09<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5><span class=\"ez-toc-section\" id=\"Step_2_Plug_Into_the_Right_Formula\"><\/span><span style=\"font-weight: 400;\">\u30b9\u30c6\u30c3\u30d72\uff1a\u9069\u5207\u306a\u6570\u5f0f\u306b\u4ee3\u5165\u3059\u308b<\/span><span class=\"ez-toc-section-end\"><\/span><\/h5>\n<p><span style=\"font-weight: 400;\">\u6d41\u4f53\u306e\u7a2e\u985e\u306b\u57fa\u3065\u3044\u3066\u3001\u9069\u5207\u306aCv\u5024\u5f0f\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u6db2\u4f53\u306e\u5834\u5408\uff1a<\/span>Cv = Q \u00d7 \u221a(SG \/ \u0394P)<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u3069\u3053\uff1a<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cv = \u5fc5\u8981\u6d41\u91cf\u4fc2\u6570<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q = \u6d41\u91cf<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0394P = \u30d0\u30eb\u30d6\u4e21\u7aef\u306e\u5727\u529b\u964d\u4e0b<\/span><\/p>\n<p><span style=\"font-weight: 400;\">SG = \u6d41\u4f53\u306e\u6bd4\u91cd<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u6c17\u4f53\u306e\u5834\u5408\uff08\u4e9c\u81e8\u754c\u6d41\u3001P2 &gt; 0.5 \u00d7 P1\uff09\uff1a<\/span>Cv = (Q \/ 1360) \u00d7 \u221a(T\u00d7SG \/ (\u0394P\u00d7(P1+P2)\/2))<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u3069\u3053\uff1a<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q = \u30ac\u30b9\u6d41\u91cf (SCFH)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">T = \u7d76\u5bfe\u6e29\u5ea6 (\u00b0R = \u00b0F + 460)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">SG = \u30ac\u30b9\u306e\u6bd4\u91cd\uff08\u7a7a\u6c17 = 1\uff09<\/span><\/p>\n<p><span style=\"font-weight: 400;\">P1 = \u4e0a\u6d41\u5074\u306e\u7d76\u5bfe\u5727\u529b (psia = \u30b2\u30fc\u30b8\u5727\u529b + 14.7)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">P2 = \u4e0b\u6d41\u5074\u306e\u7d76\u5bfe\u5727\u529b (psia)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0394P = P1 - P2 (psi)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u6ce8\uff1a\u3053\u306e\u5f0f\u306f\u3001\u5727\u529b\u964d\u4e0b\u304c\u4e2d\u7a0b\u5ea6\u306e\u307b\u3068\u3093\u3069\u306e\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u7528\u9014\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002\u51fa\u53e3\u5727\u529b\u304c\u975e\u5e38\u306b\u4f4e\u3044\u5834\u5408\uff08P2 \u2264 0.5 \u00d7 P1\uff09\u3001\u30c1\u30e7\u30fc\u30af\u30d5\u30ed\u30fc\u72b6\u614b\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u5225\u306e\u5f0f\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u3088\u3046\u306a\u5834\u5408\u306f\u3001\u30d0\u30eb\u30d6\u30e1\u30fc\u30ab\u30fc\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">SI\u5358\u4f4d\uff08m\u00b3\/h\u3001bar\uff09\u306e\u5834\u5408\u306f\u3001Kv\u4fc2\u6570\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Kv = Q \u00d7 \u221a(SG \/ \u0394P) (Q\u306fm\u00b3\/h\u3001\u0394P\u306fbar\u5358\u4f4d)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Kv = 0.865 \u00d7 Cv<\/span><\/p>\n<h5><span class=\"ez-toc-section\" id=\"Step_3_Select_Valve_Size_and_Verify_Cv\"><\/span><span style=\"font-weight: 400;\">\u30b9\u30c6\u30c3\u30d73\uff1a\u30d0\u30eb\u30d6\u30b5\u30a4\u30ba\u3092\u9078\u629e\u3057\u3001Cv\u5024\u3092\u78ba\u8a8d\u3059\u308b<\/span><span class=\"ez-toc-section-end\"><\/span><\/h5>\n<ol>\n<li><span style=\"font-weight: 400;\"> \u5fc5\u8981\u306aCV\u5024\u3092\u4f7f\u7528\u53ef\u80fd\u306a\u30d0\u30eb\u30d6CV\u5024\u3068\u4e00\u81f4\u3055\u305b\u308b<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">\u6d41\u91cf\u5236\u5fa1\u3092\u5341\u5206\u306b\u78ba\u4fdd\u3059\u308b\u305f\u3081\u3001\u8a08\u7b97\u3055\u308c\u305fCv\u5024\u3088\u308a\u3082\u308f\u305a\u304b\u306b\u9ad8\u3044\u5b9a\u683cCv\u5024\u3092\u6301\u3064\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305f\u3060\u3057\u3001\u5fc5\u8981\u4ee5\u4e0a\u306b\u9ad8\u3044\u5b9a\u683c\u5024\u306e\u30e2\u30c7\u30eb\u306f\u9078\u629e\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u4f8b\u3048\u3070\u3001\u8a08\u7b97\u3055\u308c\u305f\u5fc5\u8981Cv\u304c0.5\u306e\u5834\u5408\uff1a<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u306e\u30b5\u30a4\u30ba<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u5b9a\u683cCV<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u9078\u629e\u7d50\u679c<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">1\/4\u30a4\u30f3\u30c1\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.35<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u6d41\u91cf\u5bb9\u91cf\u304c\u4e0d\u8db3\u3057\u3066\u3044\u308b<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">3\/8\u30a4\u30f3\u30c1\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.56<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u9069\u5207\u306a\u9078\u629e<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">1\/2\u30a4\u30f3\u30c1\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.70<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u5bb9\u91cf\u306f\u5927\u304d\u3044\u304c\u3001\u5236\u5fa1\u7bc4\u56f2\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">3\/8\u30a4\u30f3\u30c1\u306e\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u306f\u3001\u4e0d\u5fc5\u8981\u306a\u30aa\u30fc\u30d0\u30fc\u30b5\u30a4\u30ba\u3092\u907f\u3051\u3064\u3064\u3001\u5341\u5206\u306a\u6d41\u91cf\u5bb9\u91cf\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002NPT-LOK <\/span><a href=\"https:\/\/npt-lok.com\/ja\/%e3%83%8b%e3%83%bc%e3%83%89%e3%83%ab%e3%83%90%e3%83%ab%e3%83%96\/\"><span style=\"font-weight: 400;\">\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6<\/span><\/a><span style=\"font-weight: 400;\"> \u30aa\u30ea\u30d5\u30a3\u30b9\u30b5\u30a4\u30ba\u3068\u30d0\u30eb\u30d6\u63a5\u7d9a\u30b5\u30a4\u30ba\u306b\u5fdc\u3058\u3066\u7570\u306a\u308bCv\u5024\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067\u3001\u5fc5\u8981\u306a\u6d41\u91cf\u5bb9\u91cf\u306b\u57fa\u3065\u3044\u3066\u9069\u5207\u306a\u30e2\u30c7\u30eb\u3092\u9078\u629e\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002.<\/span><\/p>\n<ol start=\"2\">\n<li><span style=\"font-weight: 400;\"> \u30d0\u30eb\u30d6\u306e\u6d41\u91cf\u7bc4\u56f2\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u306f\u6d41\u91cf\u5236\u5fa1\u306b\u4f7f\u7528\u3055\u308c\u308b\u305f\u3081\u3001\u5b9f\u969b\u306e\u904b\u8ee2\u6761\u4ef6\u4e0b\u3067\u5341\u5206\u306a\u8abf\u6574\u7bc4\u56f2\u3092\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u6700\u7d42\u7684\u306a\u30d0\u30eb\u30d6\u3092\u9078\u629e\u3059\u308b\u524d\u306b\u3001\u5fc5\u8981\u306a\u6d41\u91cf\u304c\u30e1\u30fc\u30ab\u30fc\u306eCv\u30c7\u30fc\u30bf\u307e\u305f\u306f\u6d41\u91cf\u66f2\u7dda\u306b\u793a\u3055\u308c\u3066\u3044\u308b\u6709\u52b9\u904b\u8ee2\u7bc4\u56f2\u5185\u306b\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/span><\/p>\n<ol start=\"3\">\n<li><span style=\"font-weight: 400;\"> \u30d0\u30eb\u30d6\u304c\u3059\u3079\u3066\u306e\u52d5\u4f5c\u6761\u4ef6\u8981\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">\u6700\u7d42\u6c7a\u5b9a\u3092\u4e0b\u3059\u524d\u306b\u3001\u4ee5\u4e0b\u306e\u70b9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">\u6700\u5927\u4f5c\u52d5\u5727\u529b<\/span><\/li>\n<li><span style=\"font-weight: 400;\">\u6e29\u5ea6\u7bc4\u56f2<\/span><\/li>\n<li><span style=\"font-weight: 400;\">\u6750\u6599\u9069\u5408\u6027<\/span><\/li>\n<li><span style=\"font-weight: 400;\">\u63a5\u7d9a\u30bf\u30a4\u30d7<\/span><\/li>\n<\/ul>\n<h4><span class=\"ez-toc-section\" id=\"Common_Mistakes\"><\/span><strong>\u3088\u304f\u3042\u308b\u9593\u9055\u3044<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">\u6b63\u3057\u3044\u8a08\u7b97\u5f0f\u3092\u7528\u3044\u305f\u3068\u3057\u3066\u3082\u3001\u3044\u304f\u3064\u304b\u306e\u3088\u304f\u3042\u308b\u9593\u9055\u3044\u306b\u3088\u3063\u3066\u3001\u30d0\u30eb\u30d6\u306e\u30b5\u30a4\u30ba\u304c\u4e0d\u9069\u5207\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002.<\/span><\/p>\n<ol>\n<li><span style=\"font-weight: 400;\"> \u30d1\u30a4\u30d7\u30b5\u30a4\u30ba\u306e\u307f\u306b\u57fa\u3065\u3044\u3066\u30d0\u30eb\u30d6\u30b5\u30a4\u30ba\u3092\u9078\u629e\u3059\u308b<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">\u30d0\u30eb\u30d6\u306e\u30b5\u30a4\u30ba\u3092\u30d1\u30a4\u30d7\u5f84\u306b\u5408\u308f\u305b\u308b\u3060\u3051\u3067\u306f\u3001Cv\u5024\u3092\u5b8c\u5168\u306b\u7121\u8996\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u30021\/2\u30a4\u30f3\u30c1\u306e\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u3067\u3082\u3001\u6d41\u91cf\u5bb9\u91cf\u306f\u5927\u304d\u304f\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u30d0\u30eb\u30d6\u306e\u30b5\u30a4\u30ba\u306f\u3001\u30d1\u30a4\u30d7\u306e\u5916\u5f84\u3067\u306f\u306a\u304f\u3001\u8a08\u7b97\u3055\u308c\u305fCv\u5024\u306b\u57fa\u3065\u3044\u3066\u6c7a\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/span><\/p>\n<ol start=\"2\">\n<li><span style=\"font-weight: 400;\"> \u4e0d\u9069\u5207\u306a\u5727\u529b\u964d\u4e0b\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">\u0394P\u3068\u306f\u3001\u30dd\u30f3\u30d7\u306e\u5410\u51fa\u5727\u529b\u3084\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u5727\u529b\u3067\u306f\u306a\u304f\u3001\u30d0\u30eb\u30d6\u306e\u4e21\u7aef\u306b\u304a\u3051\u308b\u5b9f\u969b\u306e\u5727\u529b\u5dee\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u4e0b\u6d41\u5074\u306e\u80cc\u5727\u3092\u7121\u8996\u3059\u308b\u3068\u3001\u0394P\u304c\u904e\u5927\u8a55\u4fa1\u3055\u308c\u3001Cv\u5024\u304c\u904e\u5c0f\u8a55\u4fa1\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/span><\/p>\n<ol start=\"3\">\n<li><span style=\"font-weight: 400;\"> \u6d41\u4f53\u7279\u6027\u3092\u7121\u8996\u3059\u308b<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">\u6d41\u4f53\u306e\u7a2e\u985e\u306b\u3088\u3063\u3066\u5fc5\u8981\u306a\u88dc\u6b63\u4fc2\u6570\u306f\u7570\u306a\u308a\u307e\u3059\u3002\u6c34\u306e\u5f0f\u3092\u6cb9\u306b\u9069\u7528\u3059\u308b\u3068\u3001\u8aa4\u3063\u305f\u7d50\u679c\u304c\u5f97\u3089\u308c\u307e\u3059\u3002\u4f7f\u7528\u3059\u308b\u6d41\u4f53\u306b\u9069\u3057\u305f\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/span><\/p>\n<ol start=\"4\">\n<li><span style=\"font-weight: 400;\"> \u30ac\u30b9\u306e\u5358\u4f4d\u3092\u9593\u9055\u3048\u308b<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">\u6c17\u4f53\u306e\u8a08\u7b97\u306b\u306f\u3001\u7d76\u5bfe\u5727\u529b\uff08psia = \u30b2\u30fc\u30b8\u5727 + 14.7\uff09\u3068\u7d76\u5bfe\u6e29\u5ea6\uff08\u00b0R = \u00b0F + 460\uff09\u304c\u5fc5\u8981\u3067\u3059\u3002\u30b2\u30fc\u30b8\u5727\u3092\u5f0f\u306b\u76f4\u63a5\u4ee3\u5165\u3059\u308b\u3068\u3001\u5927\u304d\u306a\u8aa4\u5dee\u304c\u751f\u3058\u307e\u3059\u3002\u307e\u305f\u3001\u6d41\u91cf\u306e\u5358\u4f4d\uff08SCFH\u3001SLPM\uff09\u304c\u5f0f\u4e2d\u306e\u5b9a\u6570\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/span><\/p>\n<ol start=\"5\">\n<li><span style=\"font-weight: 400;\"> \u5fc5\u8981CV\u5024\u306e\u4ee3\u308f\u308a\u306b\u6700\u5927CV\u5024\u3092\u9078\u629e\u3059\u308b<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">\u6d41\u91cf\u5236\u5fa1\u306b\u304a\u3044\u3066\u3001Cv\u5024\u304c\u5927\u304d\u3044\u307b\u3069\u5b89\u5168\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u8abf\u6574\u7bc4\u56f2\u304c\u72ed\u307e\u308a\u3001\u7cbe\u5ea6\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u5b9a\u683cCv\u5024\u304c\u8a08\u7b97\u5024\u3088\u308a\u3084\u3084\u9ad8\u3044\u30d0\u30eb\u30d6\u3092\u9078\u3073\u307e\u3057\u3087\u3046\u3002\u8a08\u7b97\u5024\u304b\u3089\u5927\u304d\u304f\u304b\u3051\u96e2\u308c\u3059\u304e\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\u9593\u9055\u3044<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u7d50\u679c<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u6b63\u3057\u3044\u30a2\u30d7\u30ed\u30fc\u30c1<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u30d1\u30a4\u30d7\u30b5\u30a4\u30ba\u306e\u307f\u306b\u57fa\u3065\u3044\u3066\u30d0\u30eb\u30d6\u30b5\u30a4\u30ba\u3092\u9078\u629e\u3059\u308b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">CV\u30df\u30b9\u30de\u30c3\u30c1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u8a08\u7b97\u3055\u308c\u305fCv\u306b\u3088\u308b\u30b5\u30a4\u30ba<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u4e0d\u9069\u5207\u306a\u5727\u529b\u964d\u4e0b\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059<\/span><\/td>\n<td><span style=\"font-weight: 400;\">CV\u306e\u7d50\u679c\u304c\u6b63\u3057\u304f\u3042\u308a\u307e\u305b\u3093<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u30d0\u30eb\u30d6\u4e21\u7aef\u306e\u5b9f\u969b\u306e\u5727\u529b\u5dee\uff08\u0394P\uff09\u3092\u4f7f\u7528\u3059\u308b<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u6d41\u4f53\u7279\u6027\u3092\u7121\u8996\u3059\u308b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u6570\u5f0f\u306e\u4e0d\u4e00\u81f4<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u4f7f\u7528\u3059\u308b\u6db2\u4f53\u306b\u9069\u3057\u305f\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u30ac\u30b9\u306e\u5358\u4f4d\u3092\u9593\u9055\u3048\u308b<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u5927\u304d\u306a\u8a08\u7b97\u8aa4\u5dee<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u7d76\u5bfe\u5727\u529b\u3068\u6e29\u5ea6\u3092\u4f7f\u7528\u3059\u308b<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u6700\u5927CV\u5024\u306e\u9078\u629e<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u5236\u5fa1\u7cbe\u5ea6\u304c\u5931\u308f\u308c\u305f<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u8a08\u7b97\u3055\u308c\u305fCv\u3088\u308a\u3084\u3084\u4e0a\u306e\u5024\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Summary_Cv_Sizing_in_Four_Steps\"><\/span><strong>\u6982\u8981\uff1aCV\u30b5\u30a4\u30b8\u30f3\u30b0\u306e4\u3064\u306e\u30b9\u30c6\u30c3\u30d7<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u53ce\u96c6\u3059\u308b\u30c7\u30fc\u30bf\uff1a\u6d41\u91cf\u3001\u5727\u529b\u640d\u5931\u3001\u6bd4\u91cd\u3001\u6e29\u5ea6\u3002.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u8a08\u7b97: \u5024\u3092\u5f0f\u306b\u4ee3\u5165\u3057\u3066\u3001\u5fc5\u8981\u306a\u6700\u5c0f Cv \u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u30b9\u30b1\u30fc\u30eb\u30a2\u30c3\u30d7\uff1a\u5341\u5206\u306a\u5bb9\u91cf\u3068\u9069\u5207\u306a\u8abf\u6574\u7bc4\u56f2\u3092\u5099\u3048\u305f\u30d0\u30eb\u30d6\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u78ba\u8a8d\uff1a\u7279\u5225\u306a\u52d5\u4f5c\u6761\u4ef6\u304c\u306a\u3044\u304b\u78ba\u8a8d\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u88fd\u9020\u5143\u306b\u554f\u3044\u5408\u308f\u305b\u3066\u304f\u3060\u3055\u3044\u3002.<\/span><\/li>\n<\/ol>\n<h4><span class=\"ez-toc-section\" id=\"FAQ\"><\/span><strong>\u3088\u304f\u3042\u308b\u8cea\u554f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">Q1\uff1a<\/span><a href=\"https:\/\/npt-lok.com\/ja\/%e3%83%8b%e3%83%bc%e3%83%89%e3%83%ab%e3%83%90%e3%83%ab%e3%83%96%e3%81%a8%e3%81%af%e4%bd%95%e3%81%8b%e3%80%81%e3%81%9d%e3%81%97%e3%81%a6%e3%83%8b%e3%83%bc%e3%83%89%e3%83%ab%e3%83%90%e3%83%ab%e3%83%96\/\"><span style=\"font-weight: 400;\">\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u306f\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u306e\u3067\u3059\u304b\uff1f<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">\u306d\u3058\u5c71\u4ed8\u304d\u306e\u30b9\u30c6\u30e0\u304c\u3001\u5148\u7d30\u308a\u306e\u91dd\u3092\u5c0f\u3055\u306a\u30b7\u30fc\u30c8\u958b\u53e3\u90e8\u306b\u51fa\u3057\u5165\u308c\u3057\u307e\u3059\u3002\u7d30\u3044\u306d\u3058\u5c71\u306b\u3088\u3063\u3066\u5fae\u8abf\u6574\u304c\u53ef\u80fd\u306b\u306a\u308a\u3001\u6d41\u91cf\u3092\u6b63\u78ba\u306b\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q2\uff1aCv\u5024\u3092\u8a08\u7b97\u3057\u305f\u5f8c\u3001\u9069\u5207\u306a\u30bf\u30a4\u30d7\u3001\u6750\u8cea\u3001\u63a5\u7d9a\u65b9\u6cd5\u3092\u9078\u629e\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cv\u5024\u306f\u5fc5\u8981\u306a\u6d41\u91cf\u5bb9\u91cf\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u672c\u4f53\u30bf\u30a4\u30d7\u3001\u5727\u529b\u5b9a\u683c\u3001\u6750\u8cea\u3001\u30d1\u30c3\u30ad\u30f3\u3001\u306d\u3058\u898f\u683c\u3082\u6c7a\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u5834\u5408\u306f\u3001\u6b21\u306e\u30da\u30fc\u30b8\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002 <\/span><a href=\"https:\/\/npt-lok.com\/ja\/needle-valve-types\/\"><span style=\"font-weight: 400;\">\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u306e\u7a2e\u985e\u3068\u9078\u5b9a\u30ac\u30a4\u30c9<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">Q3\uff1aCv\u5024\u3092\u8a08\u7b97\u3057\u305f\u5f8c\u3067\u3082\u3001\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u306e\u6d41\u91cf\u5236\u5fa1\u304c\u5931\u308f\u308c\u308b\u306e\u306f\u306a\u305c\u3067\u3059\u304b\uff1f<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u4e3b\u306a\u539f\u56e0\u306f\u3001\u8a08\u7b97\u3055\u308c\u305fCv\u5024\u3068\u5b9f\u969b\u306e\u904b\u8ee2\u6761\u4ef6\u3068\u306e\u4e0d\u4e00\u81f4\u3067\u3059\u3002\u8a08\u7b97\u30d7\u30ed\u30bb\u30b9\u4e2d\u306b\u4e0a\u8a18\u3067\u8ff0\u3079\u305f\u4e00\u822c\u7684\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u3044\u306a\u3044\u304b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q4\uff1a\u8a2d\u7f6e\u5f8c\u306b\u52d5\u4f5c\u6761\u4ef6\u304c\u5909\u308f\u3063\u305f\u5834\u5408\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u904b\u8ee2\u6761\u4ef6\u304c\u5909\u66f4\u3055\u308c\u305f\u5834\u5408\u306f\u3001\u65b0\u3057\u3044\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u57fa\u3065\u3044\u3066Cv\u5024\u3092\u518d\u8a08\u7b97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u65e2\u5b58\u306e\u30d0\u30eb\u30d6\u306e\u5b9a\u683cCv\u5024\u3067\u76ee\u6a19\u6d41\u91cf\u304c30%\uff5e70%\u306e\u958b\u5ea6\u7bc4\u56f2\u5185\u306b\u53ce\u307e\u308b\u5834\u5408\u306f\u3001\u5f15\u304d\u7d9a\u304d\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u30d0\u30eb\u30d6\u306e\u30b5\u30a4\u30ba\u304c\u5927\u304d\u3059\u304e\u308b\u3001\u307e\u305f\u306f\u5c0f\u3055\u3059\u304e\u308b\u5834\u5408\u306f\u3001\u3067\u304d\u308b\u3060\u3051\u65e9\u304f\u4ea4\u63db\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-13661 size-full\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2024\/12\/needle-valve-manufacturers-scaled-e1784085064970.jpg\" alt=\"\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u30e1\u30fc\u30ab\u30fc\" width=\"1468\" height=\"733\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2024\/12\/needle-valve-manufacturers-scaled-e1784085064970.jpg 1468w, https:\/\/npt-lok.com\/wp-content\/uploads\/2024\/12\/needle-valve-manufacturers-scaled-e1784085064970-768x383.jpg 768w, https:\/\/npt-lok.com\/wp-content\/uploads\/2024\/12\/needle-valve-manufacturers-scaled-e1784085064970-18x9.jpg 18w\" sizes=\"auto, (max-width: 1468px) 100vw, 1468px\" \/><\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"We_Make_Needle_Valves\"><\/span><strong>\u5f53\u793e\u306f\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u3092\u88fd\u9020\u3057\u3066\u3044\u307e\u3059<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><a href=\"https:\/\/npt-lok.com\/ja\/%e7%a7%81%e3%81%9f%e3%81%a1%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\/\">NPTLOK<\/a> \u5f53\u793e\u306f20\u5e74\u4ee5\u4e0a\u306b\u308f\u305f\u308a\u3001\u9ad8\u54c1\u8cea\u3001\u7af6\u4e89\u529b\u306e\u3042\u308b\u4fa1\u683c\u3001\u6210\u719f\u3057\u305f\u6280\u8853\u3092\u5099\u3048\u305f\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u306e\u88fd\u9020\u30e1\u30fc\u30ab\u30fc\u3067\u3059\u3002.<\/p>\n<p><span style=\"font-weight: 400;\">\u5f53\u793e\u306f\u4ee5\u4e0b\u3092\u63d0\u4f9b\u3057\u307e\u3059\uff1a<\/span><\/p>\n<p><b>\u30b5\u30a4\u30ba\u7bc4\u56f2<\/b><span style=\"font-weight: 400;\">: 1\/8\u30a4\u30f3\u30c1\uff5e1\u30a4\u30f3\u30c1 (3mm\uff5e25.4mm)<\/span><\/p>\n<p><b>\u5727\u529b\u5b9a\u683c<\/b><span style=\"font-weight: 400;\">: 3,000 psi \uff5e 10,000 psi<\/span><\/p>\n<p><b>\u63a5\u7d9a\u30bf\u30a4\u30d7<\/b><span style=\"font-weight: 400;\">: \u30e1\u30b9NPT\u3001\u30aa\u30b9NPT\u3001BSPP\u3001\u30e1\u30fc\u30c8\u30eb\u306d\u3058\u3001\u30c1\u30e5\u30fc\u30d6\u7aef\u90e8\u3001\u7a81\u5408\u305b\u6eb6\u63a5\u3001\u30bd\u30b1\u30c3\u30c8\u6eb6\u63a5\u3001\u30d5\u30e9\u30f3\u30b8\u63a5\u7d9a<\/span><\/p>\n<p><b>\u68b1\u5305\u30aa\u30d7\u30b7\u30e7\u30f3<\/b><span style=\"font-weight: 400;\">:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">PTFE packing for temperatures from -54\u00b0C to 232\u00b0C<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Graphite packing for high-temperature service up to 469\u00b0C<\/span><\/li>\n<\/ul>\n<p><b>Needle Valve Types<\/b><span style=\"font-weight: 400;\">:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Double Ferrule Needle Valves<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Male &amp; <\/span><a href=\"https:\/\/npt-lok.com\/ja\/%e3%83%a1%e3%82%b9%e3%83%8b%e3%83%bc%e3%83%89%e3%83%ab%e3%83%90%e3%83%ab%e3%83%96\/\"><span style=\"font-weight: 400;\">Female Thread Needle Valves<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Flange Needle Valves<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Butt Weld &amp; Socket Weld Needle Valves<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Block and Bleed Needle Valves<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Choose needle valve types according to your requirements.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-13695\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2025\/01\/needle-valve-manufacturer-workshop.jpg\" alt=\"\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u88fd\u9020\u5de5\u5834\" width=\"570\" height=\"360\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>In this article, we cover how to calculate the required Cv from your operating conditions and how to select the right needle valve size for accurate flow regulation., and temperature. What Happens If Cv Is Wrong? If the Cv is too large If the Cv is too small Poor control accuracy Insufficient flow capacity Limited [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-15459","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Needle Valve Flow Control: Cv Calculation and Valve Sizing - NPTLOK Instrumentation Tube Fittings and Valves<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/npt-lok.com\/ja\/\u30cb\u30fc\u30c9\u30eb\u30d0\u30eb\u30d6\u306e\u6d41\u91cf\u5236\u5fa1\u306b\u304a\u3051\u308bcv\u5024\u306e\u8a08\u7b97\u3068\u30d0\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Needle Valve Flow Control: Cv Calculation and Valve Sizing - NPTLOK Instrumentation Tube Fittings and Valves\" \/>\n<meta property=\"og:description\" content=\"In this article, we cover how to calculate the required Cv from your operating conditions and how to select the right needle valve size for accurate flow regulation., and temperature. 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