{"id":4144,"date":"2026-02-14T09:00:00","date_gmt":"2026-02-14T09:00:00","guid":{"rendered":"https:\/\/www.desopipe.com\/?p=4144"},"modified":"2026-03-06T08:02:51","modified_gmt":"2026-03-06T08:02:51","slug":"pn25-ppr-valves-for-solar-heating","status":"publish","type":"post","link":"https:\/\/www.desopipe.com\/vi\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/","title":{"rendered":"Gi\u1ea3i ph\u00e1p \u00e1p su\u1ea5t cao: Khi n\u00e0o n\u00ean l\u1ef1a ch\u1ecdn van PN25 PPR trong h\u1ec7 th\u1ed1ng s\u01b0\u1edfi \u1ea5m b\u1eb1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi"},"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.desopipe.com\/vi\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/#Pressure_Temperature_in_Solar_Heating_Systems\" >\u00c1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9 trong h\u1ec7 th\u1ed1ng s\u01b0\u1edfi \u1ea5m b\u1eb1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi<\/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.desopipe.com\/vi\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/#What_is_the_Difference_Between_a_PN20_and_a_PN_25_Valve\" >Van PN20 v\u00e0 van PN25 kh\u00e1c nhau \u1edf \u0111i\u1ec3m 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.desopipe.com\/vi\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/#Failure_Risks_of_Under-Specification\" >R\u1ee7i ro h\u1ecfng h\u00f3c do th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7<\/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.desopipe.com\/vi\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/#Selecting_Valves_for_Long-Term_Stability\" >L\u1ef1a ch\u1ecdn van \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i<\/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.desopipe.com\/vi\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/#DESO_High-Pressure_Valve_Solutions\" >Gi\u1ea3i ph\u00e1p van \u00e1p su\u1ea5t cao DESO<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/#Conclusion\" >Ph\u1ea7n k\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">Trong ng\u00e0nh c\u00f4ng nghi\u1ec7p \u1ed1ng n\u01b0\u1edbc hi\u1ec7n \u0111\u1ea1i, h\u1ec7 th\u1ed1ng PPR l\u00e0 v\u1eadt li\u1ec7u ti\u00eau chu\u1ea9n cho h\u1ec7 th\u1ed1ng \u1ed1ng n\u01b0\u1edbc n\u00f3ng v\u00e0 l\u1ea1nh. Ti\u00eau chu\u1ea9n n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi c\u00e1c quy \u0111\u1ecbnh qu\u1ed1c t\u1ebf, bao g\u1ed3m ISO9001 v\u1ec1 qu\u1ea3n l\u00fd ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 <a href=\"https:\/\/www.desopipe.com\/vi\/certificate\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ti\u00eau chu\u1ea9n DIN 8077\/8078<\/a>. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 <strong>Van PPR<\/strong> \u0110\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p l\u1ef1c v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t l\u00e2u d\u00e0i.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i \u1ed1ng PPR (Polypropylene Random Copolymer) \u0111\u1ec1u ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao b\u1ea1n c\u1ea7n xem x\u00e9t ch\u1ec9 s\u1ed1 \u201cPN\u201d \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem \u1ed1ng ho\u1eb7c van c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 \u0111\u00f3 hay kh\u00f4ng.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed8T <strong>Van PN 25<\/strong> Van PN16 l\u00e0 lo\u1ea1i van &quot;ch\u1ecbu t\u1ea3i n\u1eb7ng&quot; v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p su\u1ea5t 25 bar (kho\u1ea3ng 362 psi). B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng van ti\u00eau chu\u1ea9n PN16 ho\u1eb7c PN20 cho b\u1ed3n r\u1eeda nh\u00e0 b\u1ebfp th\u00f4ng th\u01b0\u1eddng. Tuy nhi\u00ean, n\u1ebfu h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng ch\u1ecbu t\u1ea3i n\u1eb7ng, b\u1ea1n c\u1ea7n van c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i PN25. Trong b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd t\u00ecm hi\u1ec3u c\u00e1ch ch\u1ecdn van ph\u00f9 h\u1ee3p cho h\u1ec7 th\u1ed1ng nhi\u1ec7t m\u1eb7t tr\u1eddi c\u1ee7a m\u00ecnh.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Pressure_Temperature_in_Solar_Heating_Systems\"><\/span>\u00c1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9 trong h\u1ec7 th\u1ed1ng s\u01b0\u1edfi \u1ea5m b\u1eb1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ed9 thu n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi l\u00e0 thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t c\u00f9ng v\u1edbi h\u1ec7 th\u1ed1ng nhi\u1ec7t m\u1eb7t tr\u1eddi. Ch\u00fang thu gom v\u00e0 t\u00edch tr\u1eef \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi, sau \u0111\u00f3 chuy\u1ec3n h\u00f3a th\u00e0nh n\u0103ng l\u01b0\u1ee3ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t trong c\u00e1c t\u00f2a nh\u00e0 chung c\u01b0 cao t\u1ea7ng v\u00e0 \u0111\u1ea1t nhi\u1ec7t \u0111\u1ed9 cao nh\u1ea5t l\u00ean \u0111\u1ebfn 80\u00b0C (176\u00b0F). Do \u0111\u00f3, m\u1ed9t <strong>Van s\u01b0\u1edfi PPR<\/strong> Trong h\u1ec7 th\u1ed1ng tu\u1ea7n ho\u00e0n n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi, c\u1ea7n ph\u1ea3i qu\u1ea3n l\u00fd ch\u1ea5t l\u1ecfng c\u00f3 nhi\u1ec7t \u0111\u1ed9 dao \u0111\u1ed9ng gi\u1eefa nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng v\u00e0 g\u1ea7n \u0111i\u1ec3m s\u00f4i.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong tr\u01b0\u1eddng h\u1ee3p m\u1ea5t \u0111i\u1ec7n ho\u1eb7c h\u1ecfng b\u01a1m v\u00e0o nh\u1eefng ng\u00e0y n\u1eafng n\u00f3ng gay g\u1eaft, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 b\u1ecb \u1ee9 \u0111\u1ecdng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 khi\u1ebfn \u00e1p su\u1ea5t b\u00ean trong t\u0103ng nhanh do ch\u1ea5t l\u1ecfng gi\u00e3n n\u1edf. M\u1ed9t h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n <strong>Van PPR<\/strong> c\u00f3 th\u1ec3 b\u1ecb hao m\u00f2n n\u1ebfu <a href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/\" target=\"_blank\" rel=\"noreferrer noopener\">X\u1ebfp h\u1ea1ng PN<\/a> Kh\u00f4ng th\u1ec3 x\u1eed l\u00fd c\u00e1c s\u1ef1 ki\u1ec7n gi\u00e3n n\u1edf nhi\u1ec7t c\u1ef1c \u0111\u1ea1i. Ngo\u00e0i ra, kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p su\u1ea5t c\u1ee7a PPR gi\u1ea3m khi nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u0103ng.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, vi\u1ec7c l\u1ef1a ch\u1ecdn m\u1ed9t <strong>Van PPR nhi\u1ec7t \u0111\u1ed9 cao<\/strong> V\u1edbi ch\u1ec9 s\u1ed1 PN ph\u00f9 h\u1ee3p, van s\u1ebd gi\u00fap duy tr\u00ec bi\u00ean \u0111\u1ed9 an to\u00e0n \u1edf m\u1ee9c 70\u00b0C ho\u1eb7c 95\u00b0C. \u1ede m\u1ee9c nhi\u1ec7t \u0111\u1ed9 n\u00e0y, van 25 bar l\u00e0 l\u1ef1a ch\u1ecdn ti\u00eau chu\u1ea9n cho h\u1ec7 th\u1ed1ng s\u01b0\u1edfi n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi c\u1ee7a b\u1ea1n.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_Difference_Between_a_PN20_and_a_PN_25_Valve\"><\/span>Van PN20 v\u00e0 van PN25 kh\u00e1c nhau \u1edf \u0111i\u1ec3m n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa \u0111\u1ecbnh m\u1ee9c van PN25 v\u00e0 PN20 n\u1eb1m \u1edf ch\u1ed7: <a href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u0111\u1ed9 d\u00e0y th\u00e0nh<\/a> v\u00e0 c\u1ea5p \u0111\u1ed9 nguy\u00ean li\u1ec7u th\u00f4 c\u1ee5 th\u1ec3. A PN20 <strong>Van PPR<\/strong> Thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho \u00e1p su\u1ea5t b\u00ecnh th\u01b0\u1eddng l\u00e0 2,0 MPa (20 bar) \u1edf 20\u00b0C. M\u1eb7t kh\u00e1c, m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 \u0111\u1ecbnh m\u1ee9c 25 bar \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho \u00e1p su\u1ea5t 2,5 MPa (25 bar).&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi, PN 25<strong> <\/strong>Cung c\u1ea5p c\u00e1c b\u1ee9c t\u01b0\u1eddng k\u1ebft c\u1ea5u d\u00e0y h\u01a1n. Nh\u1eefng b\u1ee9c t\u01b0\u1eddng n\u00e0y ch\u1ed1ng l\u1ea1i s\u1ef1 bi\u1ebfn d\u1ea1ng ch\u1eadm c\u1ee7a nh\u1ef1a d\u01b0\u1edbi nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u1ee9ng su\u1ea5t li\u00ean t\u1ee5c. Ngay c\u1ea3 khi h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u1edf gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 cao nh\u1ea5t, <strong>Van PPR nhi\u1ec7t \u0111\u1ed9 cao<\/strong> C\u00e1c m\u1ed1i n\u1ed1i h\u00e0n v\u1eabn k\u00edn n\u01b0\u1edbc. \u0110i\u1ec1u n\u00e0y l\u00e0 do m\u1eadt \u0111\u1ed9 v\u1eadt li\u1ec7u cao h\u01a1n c\u1ee7a van.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng t\u00f3m t\u1eaft s\u1ef1 kh\u00e1c bi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>K\u1ecbch b\u1ea3n \u1ee9ng d\u1ee5ng<\/strong><\/td><td><strong>C\u00e1c y\u1ebfu t\u1ed1 g\u00e2y c\u0103ng th\u1eb3ng \u0111i\u1ec3n h\u00ecnh<\/strong><\/td><td><strong>Hi\u1ec7u su\u1ea5t van PN20 PPR<\/strong><\/td><td><strong>Van PN25 PPR (\u00c1p su\u1ea5t cao) Hi\u1ec7u su\u1ea5t<\/strong><\/td><\/tr><tr><td>C\u00e1c t\u00f2a nh\u00e0 chung c\u01b0 cao t\u1ea7ng<\/td><td>\u00c1p su\u1ea5t t\u0129nh + Hi\u1ec7n t\u01b0\u1ee3ng b\u00faa n\u01b0\u1edbc (s\u00f3ng xung k\u00edch)<\/td><td>Ho\u1ea1t \u0111\u1ed9ng g\u1ea7n gi\u1edbi h\u1ea1n ch\u1ecbu l\u1ef1c c\u1ee7a c\u1ea5u tr\u00fac; d\u1ec5 b\u1ecb m\u1ecfi do c\u00e1c c\u00fa s\u1ed1c khi kh\u1edfi \u0111\u1ed9ng b\u01a1m.<\/td><td>Cung c\u1ea5p &quot;kho\u1ea3ng d\u1ef1 tr\u1eef&quot; v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc \u0111\u1ec3 h\u1ea5p th\u1ee5 c\u00e1c xung \u00e1p su\u1ea5t m\u00e0 kh\u00f4ng g\u00e2y \u1ee9ng su\u1ea5t l\u00ean t\u01b0\u1eddng.<\/td><\/tr><tr><td>S\u1ef1 tr\u00ec tr\u1ec7 c\u1ee7a n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi th\u01b0\u01a1ng m\u1ea1i<\/td><td>Nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao (tr\u00ean 90\u00b0C) + S\u1ef1 gi\u00e3n n\u1edf c\u1ee7a ch\u1ea5t l\u1ecfng<\/td><td>Hi\u1ec7n t\u01b0\u1ee3ng &quot;gi\u1ea3m hi\u1ec7u su\u1ea5t&quot; \u0111\u00e1ng k\u1ec3 x\u1ea3y ra; v\u1eadt li\u1ec7u m\u1ec1m \u0111i v\u00e0 c\u00f3 th\u1ec3 b\u1ecb h\u1ecfng d\u01b0\u1edbi \u00e1p su\u1ea5t h\u01a1i n\u01b0\u1edbc.<\/td><td>Gi\u1eef \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p su\u1ea5t cao h\u01a1n \u1edf nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh nh\u1edd m\u1eadt \u0111\u1ed9 th\u00e0nh t\u0103ng l\u00ean.<\/td><\/tr><tr><td>Gia nhi\u1ec7t quy tr\u00ecnh c\u00f4ng nghi\u1ec7p<\/td><td>T\u1ea3i nhi\u1ec7t \u1ed5n \u0111\u1ecbnh (tr\u00ean 75\u00b0C) + ho\u1ea1t \u0111\u1ed9ng 24\/7<\/td><td>D\u1ec5 b\u1ecb \u0111\u1ee9t do hi\u1ec7n t\u01b0\u1ee3ng gi\u00e3n n\u1edf b\u1ea5t th\u01b0\u1eddng; c\u00e1c ph\u00e2n t\u1eed &quot;gi\u00e3n&quot; theo th\u1eddi gian d\u1eabn \u0111\u1ebfn r\u00f2 r\u1ec9.<\/td><td>SDR (T\u1ef7 l\u1ec7 k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n) d\u00e0y h\u01a1n c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng bi\u1ebfn d\u1ea1ng ph\u00e2n t\u1eed, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i.<\/td><\/tr><tr><td>Tr\u1ea1m b\u01a1m nhi\u1ec7t khu v\u1ef1c<\/td><td>rung \u0111\u1ed9ng c\u01a1 h\u1ecdc t\u1ea7n s\u1ed1 cao<\/td><td>Th\u00e0nh v\u00e1ch m\u1ecfng h\u01a1n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn bi\u1ebfn d\u1ea1ng gh\u1ebf v\u00e0 r\u00f2 r\u1ec9 b\u00ean trong.<\/td><td>Th\u00e2n xe \u0111\u01b0\u1ee3c gia c\u1ed1 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t b\u1ed9 gi\u1ea3m ch\u1ea5n rung \u0111\u1ed9ng, duy tr\u00ec s\u1ef1 th\u1eb3ng h\u00e0ng ho\u00e0n h\u1ea3o b\u00ean trong.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Failure_Risks_of_Under-Specification\"><\/span>R\u1ee7i ro h\u1ecfng h\u00f3c do th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1ef1a ch\u1ecdn van cho h\u1ec7 th\u1ed1ng tu\u1ea7n ho\u00e0n n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi \u00e1p su\u1ea5t cao, h\u00e3y ch\u1ecdn van \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb v\u1edbi ch\u1ec9 s\u1ed1 PN ph\u00f9 h\u1ee3p. S\u1eed d\u1ee5ng van c\u00f3 ch\u1ec9 s\u1ed1 th\u1ea5p h\u01a1n ti\u1ec1m \u1ea9n m\u1ed9t s\u1ed1 r\u1ee7i ro c\u00f4ng nghi\u1ec7p, ch\u1eb3ng h\u1ea1n nh\u01b0:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110\u1ee9t g\u00e3y do bi\u1ebfn d\u1ea1ng d\u1ebbo:<\/strong> C\u00e1c v\u1ebft n\u1ee9t si\u00eau nh\u1ecf s\u1ebd xu\u1ea5t hi\u1ec7n tr\u00ean van, l\u00e0m gi\u1ea3m tu\u1ed5i th\u1ecd v\u1eadt li\u1ec7u. \u0110i\u1ec1u n\u00e0y l\u00e0 do ti\u1ebfp x\u00fac l\u00e2u d\u00e0i v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao.&nbsp;<\/li>\n\n\n\n<li><strong>Y\u1ebfu kh\u1edbp:<\/strong> Ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao trong th\u1eddi gian d\u00e0i c\u0169ng g\u00e2y ra s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t. Khi chu k\u1ef3 n\u00e0y l\u1eb7p \u0111i l\u1eb7p l\u1ea1i, n\u00f3 s\u1ebd t\u1ea1o ra \u00e1p l\u1ef1c r\u1ea5t l\u1edbn l\u00ean m\u1ed1i h\u00e0n gi\u1eefa \u1ed1ng v\u00e0 b\u1ec1 m\u1eb7t. <strong>Van s\u01b0\u1edfi PPR.&nbsp;<\/strong><\/li>\n\n\n\n<li><strong>Th\u1eddi gian h\u1ec7 th\u1ed1ng ng\u1eebng ho\u1ea1t \u0111\u1ed9ng: <\/strong>Hi\u1ec7n t\u01b0\u1ee3ng r\u00f2 r\u1ec9 ch\u1ea5t l\u1ecfng v\u00e0 h\u01b0 h\u1ecfng b\u1ed9 thu th\u01b0\u1eddng do van kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u1ee7 ti\u00eau chu\u1ea9n g\u00e2y ra. \u0110\u00e2y th\u01b0\u1eddng l\u00e0 nh\u1eefng \u0111i\u1ec3m h\u1ecfng h\u00f3c ph\u1ed5 bi\u1ebfn.&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 \u0111\u01b0a ra m\u1ee9c d\u1ef1 ph\u00f2ng an to\u00e0n \u0111\u1ec3 kh\u1eafc ph\u1ee5c nh\u1eefng v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p trong ng\u00e0nh. V\u00ed d\u1ee5 nh\u01b0 vi\u1ec7c ch\u1ec9 \u0111\u1ecbnh van 25 bar.<strong> <\/strong>\u0110\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh trong h\u01a1n 25 n\u0103m.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Selecting_Valves_for_Long-Term_Stability\"><\/span>L\u1ef1a ch\u1ecdn van \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c k\u1ef9 s\u01b0 ph\u1ea3i x\u00e1c minh s\u1ef1 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 DIN 8077\/8078 ho\u1eb7c ISO 15874. \u0110\u00e2y l\u00e0 m\u1ed9t y\u00eau c\u1ea7u nghi\u00eam ng\u1eb7t khi l\u1ef1a ch\u1ecdn... <strong>Van s\u01b0\u1edfi PPR.<\/strong> C\u00e1c ti\u00eau chu\u1ea9n n\u00e0y x\u00e1c \u0111\u1ecbnh c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ea7n thi\u1ebft nh\u01b0 k\u00edch th\u01b0\u1edbc v\u00e0 th\u1eed nghi\u1ec7m \u00e1p su\u1ea5t.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed8T <strong>Van PPR nhi\u1ec7t \u0111\u1ed9 cao<\/strong> ph\u1ea3i x\u1eed l\u00fd v\u1ea5n \u0111\u1ec1 c\u1ee5 th\u1ec3 <a href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-pipe\/ppr-pipe-sizes-and-specifications-guide-for-buyer\/\" target=\"_blank\" rel=\"noreferrer noopener\">SDR (T\u1ef7 l\u1ec7 k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n)<\/a> c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng. M\u1ed9t h\u1ec7 th\u1ed1ng \u1ed5n \u0111\u1ecbnh <strong>Van PPR<\/strong> S\u1ea3n ph\u1ea9m c\u0169ng n\u00ean c\u00f3 c\u00e1c mi\u1ebfng ch\u00e8n h\u1ee3p kim \u0111\u1ed3ng thau CW617N cho c\u00e1c k\u1ebft n\u1ed1i ren. \u0110i\u1ec1u n\u00e0y ng\u0103n ng\u1eeba \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a v\u00e0 \u0111\u1ea3m b\u1ea3o s\u1ef1 kh\u1edbp n\u1ed1i c\u01a1 h\u1ecdc ch\u1eafc ch\u1eafn v\u1edbi c\u00e1c \u1ed1ng d\u1eabn kim lo\u1ea1i.&nbsp;<\/p>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  \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: #0066cc;\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: #004c99;\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.desopipe.com\/vi\/product\/plastic-ball-valve-with-brass-core-ii\/\" target=\"_blank\">\n  <img decoding=\"async\" class=\"hero-image\" src=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2025\/03\/Plastic-ball-valve-with-brass-core-II.jpg\" alt=\"\">\n  <div class=\"hero-content\">\n    <div class=\"hero-title\">Van bi nh\u1ef1a l\u00f5i \u0111\u1ed3ng II<\/div>\n    <div class=\"hero-description\">\nPh\u1ea1m vi k\u00edch th\u01b0\u1edbc: DN20\u2013DN32 (20mm\u201363mm).<br>\n\nX\u1ebfp h\u1ea1ng \u00e1p su\u1ea5t: PN25 (l\u00ean \u0111\u1ebfn 2,5 MPa).\n\n <\/div>\n    <span class=\"hero-link\">Xem 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=\"DESO_High-Pressure_Valve_Solutions\"><\/span>Gi\u1ea3i ph\u00e1p van \u00e1p su\u1ea5t cao DESO<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DESO, m\u1ed9t trong nh\u1eefng nh\u00e0 s\u1ea3n xu\u1ea5t \u1ed1ng PPR, chuy\u00ean s\u1ea3n xu\u1ea5t \u1ed1ng gia c\u01b0\u1eddng. <strong>Van PN 25<\/strong> \u0111\u01a1n v\u1ecb c\u1ee7a ch\u00fang t\u00f4i. <strong>Van PPR nhi\u1ec7t \u0111\u1ed9 cao<\/strong> D\u00f2ng s\u1ea3n ph\u1ea9m n\u00e0y \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t \u0111\u1eb7c bi\u1ec7t cho c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t m\u1eb7t tr\u1eddi. Ch\u00fang s\u1eed d\u1ee5ng chip 100% Borealis ho\u1eb7c Hyosung. <a href=\"https:\/\/www.desopipe.com\/vi\/blog\/manufacturer\/buyers-guide-to-high-quality-ppr-pipe-material\/\" target=\"_blank\" rel=\"noreferrer noopener\">nguy\u00ean li\u1ec7u th\u00f4<\/a> \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c <strong>Van s\u01b0\u1edfi PPR<\/strong> S\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m \u1edf 95\u00b0C trong 1.000 gi\u1edd. \u0110i\u1ec1u n\u00e0y x\u00e1c minh kh\u1ea3 n\u0103ng ch\u1ed1ng suy gi\u1ea3m nhi\u1ec7t c\u1ee7a s\u1ea3n ph\u1ea9m theo \u0111i\u1ec1u kho\u1ea3n 11.2 c\u1ee7a ti\u00eau chu\u1ea9n ISO 15874 (ho\u1eb7c t\u01b0\u01a1ng \u0111\u01b0\u01a1ng). C\u00e1c nh\u00e0 th\u1ea7u h\u01b0\u1edbng \u0111\u1ebfn vi\u1ec7c cung c\u1ea5p cho kh\u00e1ch h\u00e0ng d\u00e2n c\u01b0 ho\u1eb7c th\u01b0\u01a1ng m\u1ea1i m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 ho\u1ea1t \u0111\u1ed9ng \u1edf \u00e1p su\u1ea5t 25 bar. B\u1eb1ng c\u00e1ch \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u n\u00e0y, vi\u1ec7c b\u1ea3o h\u00e0nh l\u1ea1i v\u00e0 l\u00e0m l\u1ea1i s\u1ebd \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Ph\u1ea7n k\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ef1a ch\u1ecdn <strong>Van PN 25<\/strong> \u0110\u00e2y l\u00e0 bi\u1ec7n ph\u00e1p ch\u1ee7 \u0111\u1ed9ng nh\u1eb1m \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng s\u01b0\u1edfi \u1ea5m b\u1eb1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi. C\u00e1c k\u1ef9 s\u01b0 ph\u1ea3i ch\u1ec9 \u0111\u1ecbnh lo\u1ea1i van ph\u00f9 h\u1ee3p d\u1ef1a tr\u00ean y\u00eau c\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng. M\u1eb7c d\u00f9 l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n <strong>Van PPR <\/strong>Van c\u00f3 th\u1ec3 \u0111\u1ee7 d\u00f9ng cho h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng n\u01b0\u1edbc th\u00f4ng th\u01b0\u1eddng, nh\u01b0ng nhu c\u1ea7u nhi\u1ec7t c\u1ee7a h\u1ec7 th\u1ed1ng s\u01b0\u1edfi n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi \u0111\u00f2i h\u1ecfi lo\u1ea1i van b\u1ec1n h\u01a1n. B\u1eb1ng c\u00e1ch l\u1eafp \u0111\u1eb7t \u0111\u00fang lo\u1ea1i van, <strong>Van s\u01b0\u1edfi PPR, <\/strong>B\u1ea1n c\u00f3 th\u1ec3 ho\u00e0n to\u00e0n y\u00ean t\u00e2m v\u1ec1 \u0111\u1ed9 an to\u00e0n, hi\u1ec7u qu\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn l\u00ean \u0111\u1ebfn 25 n\u0103m.<\/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-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/www.desopipe.com\/vi\/contact\/\" style=\"background-color:#0588a7\" target=\"_blank\" rel=\"noreferrer noopener\">Nh\u1eadn b\u00e1o gi\u00e1 mi\u1ec5n ph\u00ed<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>In the modern plumbing industry, PPR systems are the standard material for hot and cold water plumbing. This standard must be backed by international compliance, including<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":4245,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[],"class_list":["post-4144","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ppr-valve"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PPR Valve PN25 for High-Pressure Solar Heating | DESO Group<\/title>\n<meta name=\"description\" content=\"Learn why a high temperature PPR valve is required for solar heating and why a PN 25 valve is required to ensure thermal stability, creep rupture resistance, and a 25-year system service life.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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