{"id":14745,"date":"2026-02-06T09:00:00","date_gmt":"2026-02-06T01:00:00","guid":{"rendered":"https:\/\/www.xintaivalves.com\/?p=14745"},"modified":"2026-03-06T11:21:44","modified_gmt":"2026-03-06T03:21:44","slug":"cv-impact-on-selection-efficiency","status":"publish","type":"post","link":"https:\/\/www.xintaivalves.com\/vi\/blog\/technical-science\/cv-impact-on-selection-efficiency\/","title":{"rendered":"Vai tr\u00f2 c\u1ee7a h\u1ec7 s\u1ed1 Cv trong vi\u1ec7c l\u1ef1a ch\u1ecdn van \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u qu\u1ea3 trong h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n l\u01b0u l\u01b0\u1ee3ng l\u00e0 g\u00ec?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 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\">M\u1ee5c l\u1ee5c<\/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=\"Chuy\u1ec3n \u0111\u1ed5i m\u1ee5c l\u1ee5c\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Chuy\u1ec3n \u0111\u1ed5i<\/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 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/technical-science\/cv-impact-on-selection-efficiency\/#What_is_a_Valve_Flow_Coefficient_Cv\" >H\u1ec7 s\u1ed1 l\u01b0u l\u01b0\u1ee3ng van (Cv) l\u00e0 g\u00ec?<\/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.xintaivalves.com\/vi\/blog\/technical-science\/cv-impact-on-selection-efficiency\/#How_Oversized_Valves_Cause_Control_Instability\" >Van qu\u00e1 kh\u1ed5 g\u00e2y ra s\u1ef1 m\u1ea5t \u1ed5n \u0111\u1ecbnh \u0111i\u1ec1u khi\u1ec3n nh\u01b0 th\u1ebf n\u00e0o?<\/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.xintaivalves.com\/vi\/blog\/technical-science\/cv-impact-on-selection-efficiency\/#How_to_Calculate_Required_Cv_for_Specific_Flow_Rates\" >L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u00ednh to\u00e1n h\u1ec7 s\u1ed1 Cv c\u1ea7n thi\u1ebft cho c\u00e1c l\u01b0u l\u01b0\u1ee3ng c\u1ee5 th\u1ec3?<\/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.xintaivalves.com\/vi\/blog\/technical-science\/cv-impact-on-selection-efficiency\/#What_is_the_relationship_Between_Cv_and_Pressure_Drop\" >M\u1ed1i quan h\u1ec7 gi\u1eefa Cv v\u00e0 \u0111\u1ed9 gi\u1ea3m \u00e1p su\u1ea5t l\u00e0 g\u00ec?<\/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.xintaivalves.com\/vi\/blog\/technical-science\/cv-impact-on-selection-efficiency\/#Final_Thoughts\" >Suy ngh\u0129 cu\u1ed1i c\u00f9ng<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng ph\u00f9 h\u1ee3p l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh quan tr\u1ecdng trong vi\u1ec7c ch\u1ecdn thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p. Nh\u01b0ng do t\u00ednh ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng c\u00f4ng nghi\u1ec7p, ng\u01b0\u1eddi ta c\u0169ng c\u1ea7n ph\u1ea3i hi\u1ec3u r\u00f5 v\u1ec1... <a href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/what-is-valve-flow-coefficient\/\" target=\"_blank\" rel=\"noreferrer noopener\">h\u1ec7 s\u1ed1 l\u01b0u l\u01b0\u1ee3ng van<\/a>, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Cv. N\u00f3 \u0111\u00f3ng vai tr\u00f2 l\u00e0 th\u01b0\u1edbc \u0111o ch\u00ednh x\u00e1c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh hi\u1ec7u su\u1ea5t c\u1ee7a van trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n l\u01b0u l\u01b0\u1ee3ng v\u00e0 \u00e1p su\u1ea5t c\u1ee5 th\u1ec3. C\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p s\u1eed d\u1ee5ng <a href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/flow-control-valve-comprehensive-guide\/\" target=\"_blank\" rel=\"noreferrer noopener\">Van c\u1ea7u d\u00f9ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n l\u01b0u l\u01b0\u1ee3ng<\/a> Coi gi\u00e1 tr\u1ecb Cv l\u00e0 bi\u1ebfn s\u1ed1 ch\u00ednh \u0111\u1ec3 c\u00e2n b\u1eb1ng hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng v\u1edbi tu\u1ed5i th\u1ecd c\u01a1 h\u1ecdc.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn van ch\u1ec9 d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc danh ngh\u0129a c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn s\u1ef1 thi\u1ebfu hi\u1ec7u qu\u1ea3 trong h\u1ec7 th\u1ed1ng. Thay v\u00e0o \u0111\u00f3, vi\u1ec7c ph\u00e2n t\u00edch chuy\u00ean s\u00e2u v\u1ec1 h\u1ec7 s\u1ed1 l\u01b0u l\u01b0\u1ee3ng cho ph\u00e9p ng\u01b0\u1eddi v\u1eadn h\u00e0nh d\u1ef1 \u0111o\u00e1n s\u1ef1 s\u1ee5t gi\u1ea3m \u00e1p su\u1ea5t v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng... <strong>van c\u1ea7u c\u00f4ng nghi\u1ec7p<\/strong> ho\u1ea1t \u0111\u1ed9ng trong ph\u1ea1m vi hi\u1ec7u su\u1ea5t d\u1ef1 \u0111\u1ecbnh. Ph\u00e2n t\u00edch n\u00e0y kh\u00e1m ph\u00e1 \u00fd ngh\u0129a c\u01a1 h\u1ecdc c\u1ee7a Cv v\u00e0 vai tr\u00f2 quan tr\u1ecdng c\u1ee7a n\u00f3 trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a \u0111i\u1ec1u khi\u1ec3n d\u00f2ng ch\u1ea3y hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_a_Valve_Flow_Coefficient_Cv\"><\/span><strong>H\u1ec7 s\u1ed1 l\u01b0u l\u01b0\u1ee3ng van (Cv) l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ec7 s\u1ed1 l\u01b0u l\u01b0\u1ee3ng, hay Cv, l\u00e0 m\u1ed9t gi\u00e1 tr\u1ecb to\u00e1n h\u1ecdc ti\u00eau chu\u1ea9n bi\u1ec3u th\u1ecb kh\u1ea3 n\u0103ng l\u01b0u l\u01b0\u1ee3ng c\u1ee7a van. Theo \u0111\u1ecbnh ngh\u0129a, Cv l\u00e0 th\u1ec3 t\u00edch n\u01b0\u1edbc \u1edf 60\u00b0F (t\u00ednh b\u1eb1ng gallon M\u1ef9 m\u1ed7i ph\u00fat) s\u1ebd ch\u1ea3y qua van m\u1edf ho\u00e0n to\u00e0n v\u1edbi \u0111\u1ed9 gi\u1ea3m \u00e1p su\u1ea5t l\u00e0 1 psi. H\u1ec7 s\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 cung c\u1ea5p m\u1ed9t &quot;ng\u00f4n ng\u1eef&quot; chung cho... <strong>nh\u00e0 cung c\u1ea5p van c\u1ea7u<\/strong> v\u00e0 c\u00e1c k\u1ef9 s\u01b0 so s\u00e1nh kh\u1ea3 n\u0103ng c\u1ee7a c\u00e1c thi\u1ebft k\u1ebf van kh\u00e1c nhau b\u1ea5t k\u1ec3 k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd c\u1ee7a ch\u00fang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TRONG <strong>Van c\u1ea7u d\u00f9ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n l\u01b0u l\u01b0\u1ee3ng<\/strong>, C\u1ea5u tr\u00fac h\u00ecnh h\u1ecdc b\u00ean trong\u2014c\u1ee5 th\u1ec3 l\u00e0 \u0111\u01b0\u1eddng d\u1eabn d\u00f2ng ch\u1ea3y h\u00ecnh ch\u1eef \u201cS\u201d\u2014t\u1ea1o ra l\u1ef1c c\u1ea3n v\u1ed1n c\u00f3. H\u1ec7 s\u1ed1 Cv t\u00ednh \u0111\u1ebfn l\u1ef1c c\u1ea3n n\u00e0y b\u1eb1ng c\u00e1ch t\u00ednh \u0111\u1ebfn t\u1ed5n th\u1ea5t ma s\u00e1t t\u1eeb l\u1ed7 van, h\u00ecnh d\u1ea1ng n\u00fat van v\u00e0 th\u00e2n van. Gi\u00e1 tr\u1ecb Cv c\u00e0ng cao ngh\u0129a l\u00e0 l\u1ef1c c\u1ea3n d\u00f2ng ch\u1ea3y c\u00e0ng nh\u1ecf, trong khi gi\u00e1 tr\u1ecb Cv c\u00e0ng th\u1ea5p cho th\u1ea5y \u0111\u01b0\u1eddng d\u1eabn d\u00f2ng ch\u1ea3y c\u00e0ng h\u1ea1n ch\u1ebf.&nbsp;&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Oversized_Valves_Cause_Control_Instability\"><\/span><strong>Van qu\u00e1 kh\u1ed5 g\u00e2y ra s\u1ef1 m\u1ea5t \u1ed5n \u0111\u1ecbnh \u0111i\u1ec1u khi\u1ec3n nh\u01b0 th\u1ebf n\u00e0o?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Quan ni\u1ec7m &quot;c\u00e0ng l\u1edbn c\u00e0ng t\u1ed1t&quot; l\u00e0 m\u1ed9t hi\u1ec3u l\u1ea7m ph\u1ed5 bi\u1ebfn trong thi\u1ebft k\u1ebf \u0111\u01b0\u1eddng \u1ed1ng. Tuy nhi\u00ean, \u0111\u01b0\u1eddng \u1ed1ng qu\u00e1 kh\u1ed5... <strong>van c\u1ea7u c\u00f4ng nghi\u1ec7p <\/strong>\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n h\u00e0ng \u0111\u1ea7u g\u00e2y ra s\u1ef1 m\u1ea5t \u1ed5n \u0111\u1ecbnh \u0111i\u1ec1u khi\u1ec3n v\u00e0 h\u1ecfng h\u00f3c c\u01a1 kh\u00ed s\u1edbm. Van qu\u00e1 l\u1edbn so v\u1edbi l\u01b0u l\u01b0\u1ee3ng y\u00eau c\u1ea7u c\u00f3 ngh\u0129a l\u00e0 n\u00f3 ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng r\u1ea5t s\u00e1t v\u1edbi \u0111\u1ebf van \u0111\u1ec3 duy tr\u00ec \u0111i\u1ec3m \u0111\u1eb7t mong mu\u1ed1n.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 g\u1ea7n g\u0169i n\u00e0y t\u1ea1o ra m\u1ed9t s\u1ed1 r\u1ee7i ro trong v\u1eadn h\u00e0nh, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>S\u0103n b\u1eafn v\u00e0 dao \u0111\u1ed9ng:<\/strong> H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n s\u1ebd kh\u00f3 gi\u1eef \u0111\u01b0\u1ee3c v\u1ecb tr\u00ed \u1ed5n \u0111\u1ecbnh. Van dao \u0111\u1ed9ng, \u0111i\u1ec1u n\u00e0y cu\u1ed1i c\u00f9ng c\u00f3 th\u1ec3 l\u00e0m m\u00f2n c\u00e1c tr\u1ee5c v\u00e0 b\u1ed9 truy\u1ec1n \u0111\u1ed9ng. V\u00ed d\u1ee5, trong m\u1ed9t nh\u00e0 m\u00e1y c\u00f4ng nghi\u1ec7p th\u1ef1c t\u1ebf, vi\u1ec7c v\u1eadn h\u00e0nh li\u00ean t\u1ee5c l\u00e0m m\u1ea5t \u1ed5n \u0111\u1ecbnh \u0111i\u1ec3m \u0111\u1eb7t \u00e1p su\u1ea5t, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00f3ng k\u00edn s\u1edbm.&nbsp;<\/li>\n\n\n\n<li><strong>X\u00f3i m\u00f2n v\u00e0 x\u00e2m th\u1ef1c:<\/strong> Hi\u1ec7n t\u01b0\u1ee3ng k\u00e9o s\u1ee3i v\u00e0 gi\u1ea3m \u00e1p su\u1ea5t c\u1ee5c b\u1ed9 c\u00f3 th\u1ec3 x\u1ea3y ra khi ch\u1ea5t l\u1ecfng c\u00f3 v\u1eadn t\u1ed1c cao ch\u1ea3y qua c\u00e1c khe h\u1eb9p gi\u1eefa \u0111\u1ebf van v\u00e0 n\u00fat van. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng x\u00e2m th\u1ef1c.&nbsp;<\/li>\n\n\n\n<li>Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh h\u1ec7 s\u1ed1 Cv c\u1ee7a van sao cho ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u th\u1ef1c t\u1ebf c\u1ee7a quy tr\u00ecnh \u0111\u1ea3m b\u1ea3o ph\u1ea7n c\u1ee9ng ho\u1ea1t \u0111\u1ed9ng \u1edf ph\u1ea1m vi t\u1ed1i \u01b0u. Th\u00f4ng th\u01b0\u1eddng, ph\u1ea1m vi t\u1ed1i \u01b0u n\u1eb1m trong kho\u1ea3ng t\u1eeb 20% \u0111\u1ebfn 80% c\u1ee7a h\u00e0nh tr\u00ecnh van, n\u01a1i m\u00e0 kh\u1ea3 n\u0103ng \u0111i\u1ec1u khi\u1ec3n \u1ed5n \u0111\u1ecbnh v\u00e0 tuy\u1ebfn t\u00ednh nh\u1ea5t.&nbsp;<\/li>\n\n\n\n<li><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u00ednh to\u00e1n h\u1ec7 s\u1ed1 Cv c\u1ea7n thi\u1ebft cho c\u00e1c l\u01b0u l\u01b0\u1ee3ng c\u1ee5 th\u1ec3?<\/strong><strong>\u0110\u1ed9 nh\u1ea1y: <\/strong>Ngay c\u1ea3 m\u1ed9t thay \u0111\u1ed5i nh\u1ecf v\u1ec1 v\u1ecb tr\u00ed tr\u1ee5c van c\u0169ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn l\u01b0u l\u01b0\u1ee3ng, khi\u1ebfn vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c tr\u1edf n\u00ean b\u1ea5t kh\u1ea3 thi. \u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng \u00e1p su\u1ea5t cao, van qu\u00e1 kh\u1ed5 c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng l\u01b0u l\u01b0\u1ee3ng y\u00eau c\u1ea7u \u1edf kho\u1ea3ng 5% t\u1ed5ng h\u00e0nh tr\u00ecnh c\u1ee7a ch\u00fang.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh h\u1ec7 s\u1ed1 Cv c\u1ee7a van sao cho ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u th\u1ef1c t\u1ebf c\u1ee7a quy tr\u00ecnh \u0111\u1ea3m b\u1ea3o ph\u1ea7n c\u1ee9ng ho\u1ea1t \u0111\u1ed9ng \u1edf ph\u1ea1m vi t\u1ed1i \u01b0u. Th\u00f4ng th\u01b0\u1eddng, ph\u1ea1m vi t\u1ed1i \u01b0u n\u1eb1m trong kho\u1ea3ng t\u1eeb 20% \u0111\u1ebfn 80% c\u1ee7a h\u00e0nh tr\u00ecnh van, n\u01a1i m\u00e0 kh\u1ea3 n\u0103ng \u0111i\u1ec1u khi\u1ec3n \u1ed5n \u0111\u1ecbnh v\u00e0 tuy\u1ebfn t\u00ednh nh\u1ea5t.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Calculate_Required_Cv_for_Specific_Flow_Rates\"><\/span><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u00ednh to\u00e1n h\u1ec7 s\u1ed1 Cv c\u1ea7n thi\u1ebft cho c\u00e1c l\u01b0u l\u01b0\u1ee3ng c\u1ee5 th\u1ec3?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 tr\u00e1nh nh\u1eefng sai s\u00f3t do t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc kh\u00f4ng ph\u00f9 h\u1ee3p, c\u00e1c k\u1ef9 s\u01b0 ph\u1ea3i t\u00ednh to\u00e1n h\u1ec7 s\u1ed1 Cv c\u1ea7n thi\u1ebft d\u1ef1a tr\u00ean c\u00e1c th\u00f4ng s\u1ed1 v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf ch\u1ee9 kh\u00f4ng ph\u1ea3i k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1eddng \u1ed1ng. C\u00f4ng th\u1ee9c l\u01b0u l\u01b0\u1ee3ng ch\u1ea5t l\u1ecfng ti\u00eau chu\u1ea9n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00f4ng su\u1ea5t c\u1ea7n thi\u1ebft l\u00e0:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"388\" height=\"97\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/03\/Valve-Flow-Coefficient-Cv-calculation-formula-e1772690256803.webp\" alt=\"C\u00f4ng th\u1ee9c t\u00ednh h\u1ec7 s\u1ed1 l\u01b0u l\u01b0\u1ee3ng van Cv\" class=\"wp-image-14748\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/03\/Valve-Flow-Coefficient-Cv-calculation-formula-e1772690256803.webp 388w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/03\/Valve-Flow-Coefficient-Cv-calculation-formula-e1772690256803-300x75.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/03\/Valve-Flow-Coefficient-Cv-calculation-formula-e1772690256803-18x5.webp 18w\" sizes=\"(max-width: 388px) 100vw, 388px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede \u0111\u00e2u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Q<\/strong> = L\u01b0u l\u01b0\u1ee3ng d\u00f2ng ch\u1ea3y t\u00ednh b\u1eb1ng gallon m\u1ed7i ph\u00fat (GPM)<\/li>\n\n\n\n<li><strong>SG<\/strong> = T\u1ef7 tr\u1ecdng ri\u00eang c\u1ee7a ch\u1ea5t l\u1ecfng (N\u01b0\u1edbc = 1,0)<\/li>\n\n\n\n<li><strong>dP<\/strong> = \u0110\u1ed9 gi\u1ea3m \u00e1p su\u1ea5t qua van (P1 \u2013 P2)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u00e9p t\u00ednh tr\u00ean \u0111\u1ea3m b\u1ea3o c\u00e1c nh\u00e0 cung c\u1ea5p van c\u1ea7u c\u00f3 th\u1ec3 \u0111\u1ec1 xu\u1ea5t k\u00edch th\u01b0\u1edbc van ph\u00f9 h\u1ee3p ch\u00ednh x\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c. \u0110\u1ed1i v\u1edbi d\u1ecbch v\u1ee5 kh\u00ed ho\u1eb7c h\u01a1i n\u01b0\u1edbc, ph\u00e9p t\u00ednh tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p h\u01a1n v\u00ec ph\u1ea3i t\u00ednh \u0111\u1ebfn \u0111\u1ed9 n\u00e9n v\u00e0 nhi\u1ec7t \u0111\u1ed9. \u0110i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i t\u00ednh to\u00e1n h\u1ec7 s\u1ed1 Cv cho c\u1ea3 l\u01b0u l\u01b0\u1ee3ng t\u1ed1i \u0111a d\u1ef1 ki\u1ebfn v\u00e0 l\u01b0u l\u01b0\u1ee3ng t\u1ed1i thi\u1ec3u \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cT\u1ef7 l\u1ec7 t\u1eeb ch\u1ed1i\u201d n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng <strong>Van c\u1ea7u d\u00f9ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n l\u01b0u l\u01b0\u1ee3ng<\/strong> Duy tr\u00ec hi\u1ec7u qu\u1ea3 trong to\u00e0n b\u1ed9 ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng, ng\u0103n van \u0111i\u1ec1u khi\u1ec3n ch\u00ednh x\u00e1c ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t van \u0111\u00f3ng m\u1edf kh\u00f4ng \u0111\u00fang th\u1eddi \u0111i\u1ec3m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00ean c\u1ea1nh vi\u1ec7c t\u00ednh to\u00e1n l\u01b0u l\u01b0\u1ee3ng t\u1ed1i \u0111a d\u1ef1 ki\u1ebfn, vi\u1ec7c t\u00ednh to\u00e1n h\u1ec7 s\u1ed1 Cv cho l\u01b0u l\u01b0\u1ee3ng \u0111i\u1ec1u khi\u1ec3n t\u1ed1i thi\u1ec3u c\u0169ng r\u1ea5t quan tr\u1ecdng. H\u1ec7 s\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 &quot;t\u1ef7 l\u1ec7 \u0111i\u1ec1u ch\u1ec9nh l\u01b0u l\u01b0\u1ee3ng&quot; v\u00e0 \u0111\u1ea3m b\u1ea3o van c\u1ea7u \u0111i\u1ec1u khi\u1ec3n l\u01b0u l\u01b0\u1ee3ng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong to\u00e0n b\u1ed9 ph\u1ea1m vi v\u1eadn h\u00e0nh. V\u00ed d\u1ee5, h\u1ec7 s\u1ed1 Cv t\u1ed1i \u0111a c\u1ee7a van l\u00e0 100 v\u1edbi l\u01b0u l\u01b0\u1ee3ng \u0111i\u1ec1u khi\u1ec3n t\u1ed1i thi\u1ec3u l\u00e0 2. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn t\u1ef7 l\u1ec7 \u0111i\u1ec1u ch\u1ec9nh l\u01b0u l\u01b0\u1ee3ng l\u00e0 50:1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_relationship_Between_Cv_and_Pressure_Drop\"><\/span><strong>M\u1ed1i quan h\u1ec7 gi\u1eefa Cv v\u00e0 \u0111\u1ed9 gi\u1ea3m \u00e1p su\u1ea5t l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed1i quan h\u1ec7 gi\u1eefa h\u1ec7 s\u1ed1 Cv v\u00e0 \u0111\u1ed9 gi\u1ea3m \u00e1p su\u1ea5t l\u00e0 ngh\u1ecbch \u0111\u1ea3o v\u00e0 kh\u00f4ng tuy\u1ebfn t\u00ednh. Trong m\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n l\u01b0u l\u01b0\u1ee3ng, van \u0111\u01b0\u1ee3c k\u1ef3 v\u1ecdng s\u1ebd l\u00e0 \u0111i\u1ec3m ch\u00ednh g\u00e2y ra s\u1ef1 gi\u1ea3m \u00e1p su\u1ea5t. &quot;N\u0103ng l\u01b0\u1ee3ng ti\u00eau hao&quot; ch\u00ednh l\u00e0 y\u1ebfu t\u1ed1 cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh l\u01b0u l\u01b0\u1ee3ng. V\u1edbi h\u1ec7 s\u1ed1 Cv c\u1ee7a van r\u1ea5t cao, \u0111\u1ed9 gi\u1ea3m \u00e1p su\u1ea5t qua van l\u00e0 kh\u00f4ng \u0111\u00e1ng k\u1ec3. \u0110i\u1ec1u n\u00e0y khi\u1ebfn h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng quy\u1ebft \u0111\u1ecbnh l\u01b0u l\u01b0\u1ee3ng thay v\u00ec ch\u00ednh van.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong hi\u1ec7u su\u1ea5t cao <strong>van c\u1ea7u c\u00f4ng nghi\u1ec7p<\/strong>, Vi\u1ec7c duy tr\u00ec t\u1ef7 l\u1ec7 gi\u1ea3m \u00e1p su\u1ea5t \u1ed5n \u0111\u1ecbnh l\u00e0 r\u1ea5t quan tr\u1ecdng. N\u1ebfu \u0111\u1ed9 gi\u1ea3m \u00e1p su\u1ea5t (dP) r\u1ea5t th\u1ea5p (kho\u1ea3ng 25%) so v\u1edbi t\u1ed5ng \u0111\u1ed9 gi\u1ea3m \u00e1p su\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng, van s\u1ebd m\u1ea5t kh\u1ea3 n\u0103ng \u0111i\u1ec1u khi\u1ec3n ch\u1ea5t l\u1ecfng. Trong khi \u0111\u00f3, van c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n m\u1ee9c c\u1ea7n thi\u1ebft v\u1edbi h\u1ec7 s\u1ed1 Cv kh\u00f4ng \u0111\u1ee7 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u1ed9 gi\u1ea3m \u00e1p su\u1ea5t \u0111\u00e1ng k\u1ec3.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"524\" height=\"528\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/03\/Linear-vs-Equal-Percentage-globe-valve-flow-characteristic-e1772690517221.webp\" alt=\"\u0110\u1eb7c t\u00ednh l\u01b0u l\u01b0\u1ee3ng c\u1ee7a van c\u1ea7u tuy\u1ebfn t\u00ednh so v\u1edbi van c\u1ea7u c\u00f3 t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m b\u1eb1ng nhau\" class=\"wp-image-14749\" style=\"width:300px\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/03\/Linear-vs-Equal-Percentage-globe-valve-flow-characteristic-e1772690517221.webp 524w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/03\/Linear-vs-Equal-Percentage-globe-valve-flow-characteristic-e1772690517221-298x300.webp 298w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/03\/Linear-vs-Equal-Percentage-globe-valve-flow-characteristic-e1772690517221-150x150.webp 150w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/03\/Linear-vs-Equal-Percentage-globe-valve-flow-characteristic-e1772690517221-12x12.webp 12w\" sizes=\"(max-width: 524px) 100vw, 524px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu ai \u0111\u00f3 di chuy\u1ec3n <a href=\"https:\/\/www.xintaivalves.com\/vi\/blog\/valve-bonnets-comprehensive-guide\/\" target=\"_blank\" rel=\"noreferrer noopener\">th\u00e2n van<\/a> T\u1eeb van 100% \u0111\u1ebfn 50% m\u1edf, l\u01b0u l\u01b0\u1ee3ng kh\u00f4ng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3, khi\u1ebfn vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n ch\u00ednh x\u00e1c tr\u1edf n\u00ean b\u1ea5t kh\u1ea3 thi. \u0110i\u1ec1u n\u00e0y l\u00e0m &quot;bi\u1ebfn d\u1ea1ng&quot; van, ch\u1ec9 cho ph\u00e9p n\u00f3 b\u1eaft \u0111\u1ea7u \u0111i\u1ec1u ti\u1ebft ch\u1ea5t l\u1ecfng khi van g\u1ea7n nh\u01b0 \u0111\u00f3ng ho\u00e0n to\u00e0n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, h\u1ec7 s\u1ed1 Cv kh\u00f4ng \u0111\u1ee7 v\u1edbi van c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 s\u1ee5t gi\u1ea3m \u00e1p su\u1ea5t l\u1edbn, d\u1eabn \u0111\u1ebfn thi\u1ebfu h\u1ee5t ngu\u1ed3n cung c\u1ea5p cho qu\u00e1 tr\u00ecnh ph\u00eda sau. H\u01a1n n\u1eefa, m\u00e1y b\u01a1m s\u1ebd ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng v\u1ea5t v\u1ea3 h\u01a1n v\u00e0 ti\u00eau hao nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng h\u01a1n. \u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0, vi\u1ec7c duy tr\u00ec s\u1ef1 c\u00e2n b\u1eb1ng l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh c\u1ee7a van.&nbsp;<\/p>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  <title>S\u1ea3n ph\u1ea9m n\u1ed5i b\u1eadt c\u1ee7a Hero<\/title>\n  <style>\n    .hero-card {\n      display: flex;\n      flex-wrap: wrap;\n      align-items: center;\n      background: #f7f8fa;\n      border-radius: 16px;\n      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);\n      padding: 24px;\n      max-width: 900px;\n      margin: 40px auto;\n      font-family: Arial, sans-serif;\n      text-decoration: none;\n      color: inherit;\n      font-family: 'Poppins';\n    }\n\n    .hero-image {\n      width: 220px;\n      height: auto;\n      border-radius: 12px;\n      object-fit: cover;\n      flex-shrink: 0;\n    }\n\n    .hero-content {\n      padding-left: 24px;\n      flex: 1;\n      min-width: 260px;\n    }\n\n    .hero-title {\n      font-size: 1.6rem;\n      font-weight: bold;\n      margin-bottom: 12px;\n      color: #222;\n      font-family: 'Poppins';\n    }\n\n    .hero-description {\n      font-size: 1rem;\n      color: #555;\n      margin-bottom: 18px;\n    }\n\n    .hero-link {\n      display: inline-block;\n      padding: 10px 20px;\n      background-color: #D70C19;\n      color: #fff;\n      text-decoration: none;\n      border-radius: 8px;\n      font-weight: bold;\n      transition: background 0.2s ease-in-out;\n    }\n\n    .hero-link:hover {\n      background-color: #D70C19;\n    }\n\n    @media (max-width: 640px) {\n      .hero-card {\n        flex-direction: column;\n        text-align: center;\n      }\n\n      .hero-content {\n        padding-left: 0;\n        padding-top: 20px;\n      }\n\n      .hero-image {\n        width: 100%;\n        max-width: 280px;\n      }\n    }\n  <\/style>\n<\/head>\n<body>\n\n<a class=\"hero-card\" href=\"https:\/\/www.xintaivalves.com\/vi\/products\/din-flange-cast-steel-globe-valve\/\" target=\"_blank\">\n  <img decoding=\"async\" class=\"hero-image\" src=\"https:\/\/dbfhaf64fpo53.cloudfront.net\/wp-content\/uploads\/2022\/02\/3b0b49a68e4070bcc1a92e89bf1b121f.jpg\" alt=\"Van c\u1ea7u th\u00e9p \u0111\u00fac m\u1eb7t b\u00edch DIN\">\n  <div class=\"hero-content\">\n    <div class=\"hero-title\">\u2699\ufe0f Van c\u1ea7u b\u1eb1ng th\u00e9p \u0111\u00fac m\u1eb7t b\u00edch DIN<\/div>\n    <div class=\"hero-description\">Ph\u1ea1m vi \u1ee9ng d\u1ee5ng: c\u00f4ng nghi\u1ec7p h\u00f3a d\u1ea7u, \u0111i\u1ec7n, luy\u1ec7n kim, y h\u1ecdc, b\u1ea5t \u0111\u1ed9ng s\u1ea3n, k\u1ef9 thu\u1eadt \u0111\u00f4 th\u1ecb v\u00e0 c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c.<\/div>\n    <span class=\"hero-link\">Kh\u00e1m ph\u00e1 s\u1ea3n ph\u1ea9m<\/span>\n  <\/div>\n<\/a>\n\n<\/body>\n<\/html>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Final_Thoughts\"><\/span><strong>Suy ngh\u0129 cu\u1ed1i c\u00f9ng<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ec7 s\u1ed1 l\u01b0u l\u01b0\u1ee3ng l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt quan tr\u1ecdng \u0111\u1ed1i v\u1edbi s\u1ef1 ph\u00f9 h\u1ee3p. <strong>Van c\u1ea7u d\u00f9ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n l\u01b0u l\u01b0\u1ee3ng. <\/strong>Thay v\u00ec ch\u1ec9 t\u1eadp trung v\u00e0o vi\u1ec7c kh\u1edbp \u0111\u01b0\u1eddng \u1ed1ng, h\u00e3y l\u00e0m cho h\u1ec7 s\u1ed1 Cv tr\u1edf n\u00ean quan tr\u1ecdng h\u01a1n \u0111\u1ec3 gi\u00fap c\u00e1c k\u1ef9 s\u01b0 lo\u1ea1i b\u1ecf s\u1ef1 m\u1ea5t \u1ed5n \u0111\u1ecbnh trong \u0111i\u1ec1u khi\u1ec3n, gi\u1ea3m hao m\u00f2n c\u01a1 h\u1ecdc v\u00e0 t\u1ed1i \u01b0u h\u00f3a m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cho d\u00f9 b\u1ea1n \u0111ang t\u00ecm ngu\u1ed3n cung \u1ee9ng t\u1eeb to\u00e0n c\u1ea7u hay kh\u00f4ng. <strong>nh\u00e0 cung c\u1ea5p van c\u1ea7u <\/strong>Cho d\u00f9 l\u00e0 thi\u1ebft k\u1ebf m\u1ed9t h\u1ec7 th\u1ed1ng m\u1edbi, m\u1ee5c ti\u00eau lu\u00f4n ph\u1ea3i l\u00e0 l\u1ef1a ch\u1ecdn k\u00edch th\u01b0\u1edbc van ph\u00f9 h\u1ee3p. \u0110i\u1ec1u n\u00e0y gi\u00fap duy tr\u00ec kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t ch\u1ea5t l\u1ecfng m\u00e0 kh\u00f4ng g\u00e2y ra t\u00e1c \u0111\u1ed9ng b\u1ea5t l\u1ee3i. Van \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn \u0111\u00fang k\u00edch th\u01b0\u1edbc.<strong> van c\u1ea7u c\u00f4ng nghi\u1ec7p<\/strong> Ch\u00fang l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n l\u01b0u l\u01b0\u1ee3ng hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-vivid-red-background-color has-text-color has-background has-link-color has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/www.xintaivalves.com\/vi\/contact\/\" style=\"font-style:normal;font-weight:500\" target=\"_blank\" rel=\"noreferrer noopener\">Nh\u1eadn b\u00e1o gi\u00e1<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Matching pipe diameters is an important process in choosing the right hardware. But given the complexity of industrial piping, one must also have a clear understanding of the valve flow coefficient, also known as Cv. It serves as a definitive metric for determining the valve\u2019s performance under specific flow and pressure conditions. Industries using globe [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":14746,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[306],"tags":[],"class_list":["post-14745","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-science"],"_links":{"self":[{"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/posts\/14745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/comments?post=14745"}],"version-history":[{"count":2,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/posts\/14745\/revisions"}],"predecessor-version":[{"id":14753,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/posts\/14745\/revisions\/14753"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/media\/14746"}],"wp:attachment":[{"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/media?parent=14745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/categories?post=14745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xintaivalves.com\/vi\/wp-json\/wp\/v2\/tags?post=14745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}