{"id":4163,"date":"2026-02-21T09:00:00","date_gmt":"2026-02-21T09:00:00","guid":{"rendered":"https:\/\/www.desopipe.com\/?p=4163"},"modified":"2026-03-06T06:46:26","modified_gmt":"2026-03-06T06:46:26","slug":"ppr-ball-valve-sealing-mechanism-explained","status":"publish","type":"post","link":"https:\/\/www.desopipe.com\/vi\/blog\/ppr-valve\/ppr-ball-valve-sealing-mechanism-explained\/","title":{"rendered":"C\u01a1 ch\u1ebf l\u00e0m k\u00edn: S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa v\u00f2ng \u0111\u1ec7m O-ring v\u00e0 v\u00f2ng \u0111\u1ec7m PTFE trong van bi PPR"},"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\/ppr-ball-valve-sealing-mechanism-explained\/#Why_Sealing_Design_Matters\" >T\u1ea1i sao thi\u1ebft k\u1ebf gio\u0103ng l\u1ea1i quan tr\u1ecdng<\/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\/ppr-ball-valve-sealing-mechanism-explained\/#O-Ring_Sealing_Explained\" >Gi\u1ea3i th\u00edch v\u1ec1 gio\u0103ng ch\u1eef O<\/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\/ppr-ball-valve-sealing-mechanism-explained\/#PTFE_Teflon_Sealing_Explained\" >Gi\u1ea3i th\u00edch v\u1ec1 gio\u0103ng PTFE (Teflon)<\/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\/ppr-ball-valve-sealing-mechanism-explained\/#Performance_Comparison_O-Ring_vs_PTFE\" >So s\u00e1nh hi\u1ec7u n\u0103ng: V\u00f2ng \u0111\u1ec7m O-ring so v\u1edbi PTFE<\/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\/ppr-ball-valve-sealing-mechanism-explained\/#DESO_Valve_Structure_Choices\" >C\u00e1c l\u1ef1a ch\u1ecdn c\u1ea5u tr\u00fac van 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\/ppr-ball-valve-sealing-mechanism-explained\/#Conclusion\" >Ph\u1ea7n k\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c c\u00f4ng tr\u00ecnh l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng n\u01b0\u1edbc d\u00e2n d\u1ee5ng v\u00e0 th\u01b0\u01a1ng m\u1ea1i, <a href=\"https:\/\/www.desopipe.com\/vi\/product-category\/ppr-valve\/ppr-ball-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Van bi PPR<\/strong><\/a> C\u00e1c van n\u00e0y \u0111\u00f3ng vai tr\u00f2 nh\u01b0 ng\u01b0\u1eddi g\u00e1c c\u1ed5ng \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00e0 ph\u00e2n t\u00e1ch d\u00f2ng ch\u1ea3y c\u1ee7a n\u01b0\u1edbc. Ch\u00fang \u0111i\u1ec1u ch\u1ec9nh \u00e1p su\u1ea5t, cho ph\u00e9p d\u1eebng h\u1ec7 th\u1ed1ng \u0111\u1ec3 b\u1ea3o tr\u00ec v\u00e0 ng\u0103n ch\u1eb7n d\u00f2ng ch\u1ea3y ng\u01b0\u1ee3c trong h\u1ec7 th\u1ed1ng n\u01b0\u1edbc sinh ho\u1ea1t.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Van bi PPR<\/strong> Van l\u00e0 thi\u1ebft b\u1ecb thi\u1ebft y\u1ebfu trong h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng n\u01b0\u1edbc. C\u00e1c van n\u00e0y ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng nghi\u00eam ng\u1eb7t, ch\u1eb3ng h\u1ea1n nh\u01b0 ISO 15874 (Ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt cho h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng PP d\u00f9ng cho h\u1ec7 th\u1ed1ng n\u01b0\u1edbc n\u00f3ng v\u00e0 l\u1ea1nh), \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng l\u00ean \u0111\u1ebfn 16 bar (232 psi).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ea7u h\u1ebft c\u00e1c th\u1ee3 l\u1eafp \u0111\u1eb7t \u0111\u1ec1u d\u00e0nh th\u1eddi gian \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng <strong>kh\u1edbp n\u1ed1i van bi<\/strong> V\u00e0 <strong><a href=\"https:\/\/www.desopipe.com\/vi\/blog\/ppr-fitting\/threaded-vs-socket-ppr-couplings-key-differences\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u1ed4 c\u1eafm van PPR<\/a><\/strong> C\u00e1c m\u1ed1i n\u1ed1i r\u1ea5t ch\u1eb7t ch\u1ebd. Ch\u00fang c\u0169ng \u0111\u1ea3m b\u1ea3o c\u00e1c m\u1ed1i n\u1ed1i \u0111\u01b0\u1ee3c g\u1eafn ch\u1eafc ch\u1eafn v\u00e0o \u0111\u01b0\u1eddng \u1ed1ng. Tuy nhi\u00ean, ch\u00ednh c\u00e1c gio\u0103ng k\u00edn b\u00ean trong van m\u1edbi quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t l\u00e2u d\u00e0i.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 hai ki\u1ec3u thi\u1ebft k\u1ebf gio\u0103ng ch\u00ednh chi\u1ebfm \u01b0u th\u1ebf tr\u00ean th\u1ecb tr\u01b0\u1eddng: gio\u0103ng ch\u1eef O b\u1eb1ng ch\u1ea5t \u0111\u00e0n h\u1ed3i v\u00e0 gio\u0103ng b\u1eb1ng polyme flo PTFE. T\u1ea1i DESO, c\u00e1c k\u1ef9 s\u01b0 \u0111\u01b0\u1eddng \u1ed1ng l\u1eafp r\u00e1p t\u1eebng van v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn l\u00e0m k\u00edn \u0111\u01b0\u1ee3c gh\u00e9p n\u1ed1i ch\u00ednh x\u00e1c. \u0110i\u1ec1u n\u00e0y gi\u00fap lo\u1ea1i b\u1ecf hi\u1ec7n t\u01b0\u1ee3ng r\u00f2 r\u1ec9 d\u01b0\u1edbi \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c l\u00ean \u0111\u1ebfn 16 bar (232 psi).&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Sealing_Design_Matters\"><\/span>T\u1ea1i sao thi\u1ebft k\u1ebf gio\u0103ng l\u1ea1i quan tr\u1ecdng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi <strong><a href=\"https:\/\/www.desopipe.com\/vi\/blog\/manufacturer\/buyers-guide-to-high-quality-ppr-pipe-material\/\" target=\"_blank\" rel=\"noreferrer noopener\">V\u1eadt li\u1ec7u PPR<\/a><\/strong> Khi van b\u1ecb h\u1ecfng gio\u0103ng, n\u01b0\u1edbc s\u1ebd ch\u1ea3y qua b\u1ec1 m\u1eb7t bi van. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m \u00e1p su\u1ea5t h\u1ec7 th\u1ed1ng t\u1eeb 0,2 \u0111\u1ebfn 0,5 bar cho m\u1ed7i van b\u1ecb h\u1ecfng trong c\u00e1c h\u1ec7 th\u1ed1ng l\u1eafp \u0111\u1eb7t n\u1ed1i ti\u1ebfp.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 s\u1ee5t gi\u1ea3m \u00e1p su\u1ea5t n\u00e0y bu\u1ed9c c\u00e1c m\u00e1y b\u01a1m ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng m\u1ea1nh h\u01a1n. Do \u0111\u00f3, l\u00e0m t\u0103ng m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng t\u1eeb 8-12% trong c\u00e1c t\u00f2a nh\u00e0 nhi\u1ec1u t\u1ea7ng. R\u00f2 r\u1ec9 nh\u1ecf c\u0169ng g\u00e2y ra thi\u1ec7t h\u1ea1i do n\u01b0\u1edbc v\u00e0 t\u1ed1n trung b\u00ecnh $2500-7000 \u0111\u1ec3 s\u1eeda ch\u1eefa, theo d\u1eef li\u1ec7u t\u1eeb ng\u00e0nh b\u1ea3o hi\u1ec3m.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1eadt li\u1ec7u l\u00e0m k\u00edn c\u0169ng quy\u1ebft \u0111\u1ecbnh tu\u1ed5i th\u1ecd c\u1ee7a van trong m\u00f4i tr\u01b0\u1eddng h\u00f3a ch\u1ea5t kh\u1eafc nghi\u1ec7t. N\u01b0\u1edbc m\u00e1y sinh ho\u1ea1t c\u00f3 n\u1ed3ng \u0111\u1ed9 clo t\u1eeb 0,5-2,0 mg\/L. \u0110i\u1ec1u n\u00e0y khi\u1ebfn m\u1ed9t s\u1ed1 lo\u1ea1i ch\u1ea5t \u0111\u00e0n h\u1ed3i b\u1ecb xu\u1ed1ng c\u1ea5p trong v\u00f2ng 5 \u0111\u1ebfn 7 n\u0103m.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c t\u00f2a nh\u00e0 c\u00f3 h\u1ec7 th\u1ed1ng tu\u1ea7n ho\u00e0n n\u01b0\u1edbc n\u00f3ng, s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng m\u1ecfi v\u1eadt li\u1ec7u. N\u1ebfu gio\u0103ng v\u00e0 bi van c\u1ecd x\u00e1t qu\u00e1 ch\u1eb7t, van s\u1ebd tr\u1edf n\u00ean qu\u00e1 c\u1ee9ng. \u0110\u1ec3 tr\u00e1nh h\u01b0 h\u1ecfng, tay c\u1ea7m c\u1ea7n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c l\u1ef1c trong kho\u1ea3ng 15\u201320 Nm.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"O-Ring_Sealing_Explained\"><\/span>Gi\u1ea3i th\u00edch v\u1ec1 gio\u0103ng ch\u1eef O<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"812\" height=\"489\" src=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-1.webp\" alt=\"V\u00f2ng \u0111\u1ec7m cao su EPDM trong van bi PPR\" class=\"wp-image-4166\" style=\"width:500px\" srcset=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-1.webp 812w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-1-500x301.webp 500w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-1-300x181.webp 300w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-1-768x463.webp 768w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-1-18x12.webp 18w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-1-125x75.webp 125w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-1-480x289.webp 480w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-1-800x482.webp 800w\" sizes=\"auto, (max-width:767px) 480px, (max-width:812px) 100vw, 812px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00f2ng \u0111\u1ec7m cao su (th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng EPDM ho\u1eb7c Nitrile) l\u00e0 l\u1ef1a ch\u1ecdn ti\u00eau chu\u1ea9n cho h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng n\u01b0\u1edbc trong nh\u00e0. Ch\u00fang ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch \u0111\u01b0\u1ee3c &quot;\u00e9p&quot; v\u00e0o m\u1ed9t r\u00e3nh nh\u1ecf b\u00ean trong van \u0111\u1ec3 t\u1ea1o ra m\u1ed9t l\u1edbp b\u1ecbt k\u00edn ch\u1eafc ch\u1eafn.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>S\u1ee9c m\u1ea1nh c\u1ee7a s\u1ef1 \u00e9p ch\u1eb7t:<\/strong> Khi van \u0111\u01b0\u1ee3c l\u1eafp r\u00e1p, v\u00f2ng ch\u1eef O b\u1ecb n\u00e9n \u0111i 15\u201325% \u0111\u1ed9 d\u00e0y c\u1ee7a n\u00f3. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t l\u1edbp b\u1ecbt k\u00edn m\u1ea1nh \u0111\u1ebfn m\u1ee9c l\u1ef1c ti\u1ebfp x\u00fac c\u1ee7a n\u00f3 g\u1ea5p \u0111\u00f4i \u00e1p su\u1ea5t n\u01b0\u1edbc\u2014v\u00ed d\u1ee5, \u00e1p su\u1ea5t n\u01b0\u1edbc 6 bar t\u1ea1o ra l\u1ef1c b\u1ecbt k\u00edn 12 bar.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110\u00e1ng tin c\u1eady cho gia \u0111\u00ecnh: <\/strong>C\u00e1c v\u00f2ng \u0111\u1ec7m n\u00e0y ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb -40\u00b0C \u0111\u1ebfn +120\u00b0C v\u00e0 b\u1eaft \u0111\u1ea7u l\u00e0m k\u00edn \u1edf \u00e1p su\u1ea5t r\u1ea5t th\u1ea5p (0,5 bar). V\u00ec m\u1ed7i v\u00f2ng \u0111\u1ec7m ch\u1ec9 c\u00f3 gi\u00e1 th\u00e0nh s\u1ea3n xu\u1ea5t t\u1eeb $0,15 \u0111\u1ebfn $0,30, n\u00ean gi\u00e1 th\u00e0nh t\u1ed5ng th\u1ec3 c\u1ee7a van v\u1eabn \u1edf m\u1ee9c ph\u1ea3i ch\u0103ng cho c\u00e1c d\u1ef1 \u00e1n d\u00e2n d\u1ee5ng.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Y\u1ebfu t\u1ed1 \u201cph\u1ee5c h\u1ed3i\u201d:<\/strong> Sau 50.000 chu k\u1ef3, v\u00f2ng \u0111\u1ec7m O-ring c\u00f3 th\u1ec3 b\u1ecb bi\u1ebfn d\u1ea1ng m\u1ea5t 10\u201315% so v\u1edbi h\u00ecnh d\u1ea1ng ban \u0111\u1ea7u. V\u1ebft l\u00f5m v\u0129nh vi\u1ec5n n\u00e0y l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng r\u00f2 r\u1ec9 theo th\u1eddi gian.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Gi\u1edbi h\u1ea1n v\u1ec1 h\u00f3a ch\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9:<\/strong> C\u00e1c h\u00f3a ch\u1ea5t m\u1ea1nh nh\u01b0 clo ho\u1eb7c ch\u1ea5t ch\u1ed1ng \u0111\u00f4ng c\u00f3 th\u1ec3 l\u00e0m cho cao su ph\u1ed3ng l\u00ean t\u1eeb 5\u20138%, cu\u1ed1i c\u00f9ng \u0111\u1ea9y n\u00f3 ra kh\u1ecfi v\u1ecb tr\u00ed. M\u1eb7c d\u00f9 ch\u00fang ch\u1ecbu \u0111\u01b0\u1ee3c n\u01b0\u1edbc n\u00f3ng t\u1ed1t, nh\u01b0ng ch\u00fang b\u1ecb gi\u1edbi h\u1ea1n \u1edf nhi\u1ec7t \u0111\u1ed9 95\u00b0C khi s\u1eed d\u1ee5ng li\u00ean t\u1ee5c, v\u00ec v\u1eady ch\u00fang kh\u00f4ng \u0111\u1ee7 b\u1ec1n \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c h\u01a1i n\u01b0\u1edbc c\u00f4ng nghi\u1ec7p nhi\u1ec7t \u0111\u1ed9 cao.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"PTFE_Teflon_Sealing_Explained\"><\/span>Gi\u1ea3i th\u00edch v\u1ec1 gio\u0103ng PTFE (Teflon)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PTFE (c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Teflon) ho\u1ea1t \u0111\u1ed9ng kh\u00e1c v\u1edbi cao su. Thay v\u00ec l\u00e0 m\u1ed9t v\u00f2ng m\u1ec1m d\u1ebbo \u0111\u01b0\u1ee3c \u00e9p v\u00e0o r\u00e3nh, n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t &quot;gi\u00e1 \u0111\u1ee1&quot; tr\u01a1n nh\u1eb5n, ch\u1eafc ch\u1eafn cho vi\u00ean bi c\u1ee7a van.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ho\u1ea1t \u0111\u1ed9ng c\u1ef1c k\u1ef3 m\u01b0\u1ee3t m\u00e0: <\/strong>PTFE c\u1ef1c k\u1ef3 tr\u01a1n tr\u01b0\u1ee3t, v\u1edbi h\u1ec7 s\u1ed1 ma s\u00e1t l\u00e0 0,05\u20130,10\u2014g\u1ea7n g\u1ea5p n\u0103m l\u1ea7n so v\u1edbi cao su c\u00f3 h\u1ec7 s\u1ed1 ma s\u00e1t 0,30-0,50. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t van 1 inch ch\u1ec9 c\u1ea7n l\u1ef1c 3\u20136 Nm \u0111\u1ec3 xoay, \u00edt h\u01a1n 60% so v\u1edbi van v\u00f2ng ch\u1eef O.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu c\u1ef1c m\u1ea1nh:<\/strong> N\u00f3 c\u00f3 th\u1ec3 x\u1eed l\u00fd h\u1ea7u h\u1ebft m\u1ecdi lo\u1ea1i h\u00f3a ch\u1ea5t (t\u1eeb pH 1 \u0111\u1ebfn 14) v\u00e0 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 t\u1eeb -200\u00b0C (\u0111\u00f3ng b\u0103ng) \u0111\u1ebfn +260\u00b0C (n\u00f3ng b\u1ecfng).<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u1ec3 t\u1ed3n t\u1ea1i h\u00e0ng th\u1eadp k\u1ef7:<\/strong> Trong n\u01b0\u1edbc c\u1ee9ng, c\u00e1c kho\u00e1ng ch\u1ea5t nh\u01b0 canxi s\u1ebd t\u00edch t\u1ee5 tr\u00ean cao su ch\u1ec9 trong v\u00f2ng 18-24 th\u00e1ng, nh\u01b0ng PTFE v\u1eabn s\u1ea1ch s\u1ebd trong h\u01a1n 10 n\u0103m. \u0110\u00e2y l\u00e0 m\u1ed9t l\u1ee3i \u00edch r\u1ea5t l\u1edbn \u0111\u1ed1i v\u1edbi c\u00e1c t\u00f2a nh\u00e0 l\u1edbn, n\u01a1i vi\u1ec7c th\u00e1o n\u01b0\u1edbc kh\u1ecfi \u0111\u01b0\u1eddng \u1ed1ng \u0111\u1ec3 s\u1eeda ch\u1eefa l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 nan gi\u1ea3i.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>K\u1ef9 thu\u1eadt ch\u00ednh x\u00e1c: <\/strong>Nh\u1eefng lo\u1ea1i gio\u0103ng n\u00e0y c\u00f3 gi\u00e1 cao h\u01a1n kho\u1ea3ng $1.20\u2013$2.50 m\u1ed7i chi\u1ebfc v\u00ec bi b\u00ean trong ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1nh b\u00f3ng \u0111\u1ebfn \u0111\u1ed9 nh\u1eb5n nh\u01b0 g\u01b0\u01a1ng (Ra 0.4 \u03bcm). Trong khi cao su c\u00f3 th\u1ec3 &quot;m\u1ec1m&quot; ra \u0111\u1ec3 che gi\u1ea5u c\u00e1c v\u1ebft x\u01b0\u1edbc nh\u1ecf, PTFE y\u00eau c\u1ea7u bi ph\u1ea3i nh\u1eb5n g\u1ea5p \u0111\u00f4i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 k\u00edn ho\u00e0n h\u1ea3o.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Performance_Comparison_O-Ring_vs_PTFE\"><\/span>So s\u00e1nh hi\u1ec7u n\u0103ng: V\u00f2ng \u0111\u1ec7m O-ring so v\u1edbi PTFE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"935\" height=\"501\" src=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-2.webp\" alt=\"V\u1eadt li\u1ec7u PPR \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho v\u00f2ng ch\u1eef O n\u00e9n v\u00e0 PTFE \u0111\u00e1nh b\u00f3ng.\" class=\"wp-image-4167\" style=\"width:500px\" srcset=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-2.webp 935w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-2-500x268.webp 500w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-2-300x161.webp 300w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-2-768x412.webp 768w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-2-18x10.webp 18w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-2-140x75.webp 140w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-2-480x257.webp 480w, https:\/\/www.desopipe.com\/wp-content\/uploads\/2026\/02\/Sealing-Mechanisms-2-800x429.webp 800w\" sizes=\"auto, (max-width:767px) 480px, (max-width:935px) 100vw, 935px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Y\u1ebfu t\u1ed1 hi\u1ec7u su\u1ea5t<\/strong><\/td><td><strong>V\u00f2ng \u0111\u1ec7m ch\u1eef O (EPDM\/NBR)<\/strong><\/td><td><strong>Gio\u0103ng PTFE<\/strong><\/td><\/tr><tr><td>Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9<\/td><td>-40\u00b0C \u0111\u1ebfn +95\u00b0C<\/td><td>-200\u00b0C \u0111\u1ebfn +260\u00b0C<\/td><\/tr><tr><td>Kh\u00e1ng h\u00f3a ch\u1ea5t<\/td><td>\u0110\u1ed9 pH trung b\u00ecnh (6\u20139)<\/td><td>Tuy\u1ec7t v\u1eddi (pH 1\u201314)<\/td><\/tr><tr><td>M\u00f4-men xo\u1eafn v\u1eadn h\u00e0nh (DN25)<\/td><td>10\u201314 Nm<\/td><td>3\u20136 Nm<\/td><\/tr><tr><td>Tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng (Chu k\u1ef3)<\/td><td>30.000\u201350.000<\/td><td>100,000+<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng c\u1eb7n kho\u00e1ng<\/td><td>Th\u1ea5p<\/td><td>Cao<\/td><\/tr><tr><td>Chi ph\u00ed ban \u0111\u1ea7u<\/td><td>$0.15\u2013$0.30<\/td><td>$1.20\u2013$2.50<\/td><\/tr><tr><td>X\u1ebfp h\u1ea1ng \u00e1p su\u1ea5t<\/td><td>L\u00ean \u0111\u1ebfn 16 bar<\/td><td>L\u00ean \u0111\u1ebfn 25 bar<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DESO_Valve_Structure_Choices\"><\/span>C\u00e1c l\u1ef1a ch\u1ecdn c\u1ea5u tr\u00fac van DESO<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ch\u1ecdn \u0111\u00fang c\u00f4ng c\u1ee5 cho \u0111\u00fang c\u00f4ng vi\u1ec7c:<\/strong> \u0110\u1ed1i v\u1edbi c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng n\u01b0\u1edbc l\u1ea1nh ti\u00eau chu\u1ea9n (d\u01b0\u1edbi <strong>6 bar<\/strong> (v\u1edbi \u00e1p su\u1ea5t nh\u1ea5t \u0111\u1ecbnh), DESO s\u1eed d\u1ee5ng gio\u0103ng cao su EPDM. Lo\u1ea1i gio\u0103ng n\u00e0y c\u00f3 gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng v\u00e0 \u0111\u1ed9 b\u1ec1n cao. <strong>15 n\u0103m<\/strong>. \u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng n\u01b0\u1edbc n\u00f3ng ho\u1ea1t \u0111\u1ed9ng \u1edf \u00e1p su\u1ea5t cao (<strong>10\u201316 bar<\/strong>) v\u00e0 nhi\u1ec7t \u0111\u1ed9 cao (<strong>85\u201395\u00b0C<\/strong>DESO chuy\u1ec3n sang s\u1eed d\u1ee5ng gio\u0103ng PTFE \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c gia t\u0103ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c b\u1ed9 ph\u1eadn c\u00f3 b\u1ec1 m\u1eb7t nh\u1eb5n b\u00f3ng nh\u01b0 g\u01b0\u01a1ng:<\/strong> \u0110\u1ec3 ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng m\u00f2n gio\u0103ng, DESO s\u1eed d\u1ee5ng c\u00e1c vi\u00ean bi b\u1eb1ng \u0111\u1ed3ng thau \u0111\u01b0\u1ee3c \u0111\u00e1nh b\u00f3ng \u0111\u1ebfn \u0111\u1ed9 si\u00eau m\u1ecbn (<strong>0,3 \u03bcm<\/strong>Ch\u00fang \u0111\u01b0\u1ee3c \u0111\u1eb7t trong c\u00e1c thi\u1ebft b\u1ecb \u1ed5n \u0111\u1ecbnh \u00e1p su\u1ea5t. <a href=\"https:\/\/www.desopipe.com\/vi\/leading-ppr-fitting-manufacturer-for-global-piping-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\">Nh\u1ef1a PPR Hyosung<\/a>, gi\u00fap duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh trong qu\u00e1 tr\u00ecnh thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9, nh\u1edd \u0111\u00f3 van kh\u00f4ng b\u1ecb &quot;th\u1edf&quot; hay bi\u1ebfn d\u1ea1ng g\u00e2y r\u00f2 r\u1ec9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00f4ng ngh\u1ec7 l\u00f2 xo th\u00f4ng minh:<\/strong> B\u00ean trong c\u00e1c van PTFE cao c\u1ea5p c\u1ee7a DESO, l\u00f2 xo b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 t\u1ea1o ra m\u1ed9t l\u1ef1c kh\u00f4ng \u0111\u1ed5i. <strong>150\u2013200 N<\/strong>. \u00c1p su\u1ea5t n\u00e0y t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh cho ph\u00f9 h\u1ee3p v\u1edbi k\u00edch th\u01b0\u1edbc nh\u1ecf. <strong>0,01\u20130,02 mm<\/strong> S\u1ef1 gi\u00e3n n\u1edf x\u1ea3y ra khi kim lo\u1ea1i v\u00e0 nh\u1ef1a n\u00f3ng l\u00ean.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u201cThi\u1ebft l\u1eadp xong r\u1ed3i qu\u00ean \u0111i\u201d:<\/strong> V\u00ec nh\u1eefng thi\u1ebft k\u1ebf n\u00e0y kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec, c\u00e1c chuy\u00ean gia l\u1ef1a ch\u1ecdn ch\u00fang cho nh\u1eefng c\u00f4ng vi\u1ec7c &quot;\u1ea9n&quot; - nh\u01b0 \u0111\u01b0\u1eddng \u1ed1ng ch\u00f4n trong t\u1ea5m b\u00ea t\u00f4ng ho\u1eb7c ph\u00eda sau g\u1ea1ch l\u00e1t ph\u00f2ng t\u1eafm - n\u01a1i b\u1ea1n kh\u00f4ng bao gi\u1edd mu\u1ed1n ph\u1ea3i \u0111\u00e0o ch\u00fang l\u00ean \u0111\u1ec3 s\u1eeda ch\u1eefa.<\/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 \u0111\u00fang \u0111\u1eafn <strong>Van bi PPR<\/strong> \u0110i\u1ec1u n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o ng\u00e2n s\u00e1ch v\u00e0 y\u00eau c\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng n\u01b0\u1edbc nh\u00e0 b\u1ea1n. Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 b\u1ea1n n\u00ean hy sinh ng\u00e2n s\u00e1ch \u0111\u1ec3 \u0111\u1ed5i l\u1ea5y s\u1ef1 an to\u00e0n.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c van ti\u00eau chu\u1ea9n s\u1eed d\u1ee5ng v\u00f2ng \u0111\u1ec7m cao su (O-ring), t\u1ea1o ra m\u1ed9t l\u1edbp b\u1ecbt k\u00edn ch\u1eafc ch\u1eafn, m\u1ea1nh g\u1ea5p \u0111\u00f4i \u00e1p su\u1ea5t n\u01b0\u1edbc. Tuy nhi\u00ean, sau 50.000 l\u1ea7n s\u1eed d\u1ee5ng, c\u00e1c v\u00f2ng \u0111\u1ec7m n\u00e0y c\u00f3 th\u1ec3 m\u1ea5t \u0111i 10 \u2013 15% \u0111\u1ed9 \u0111\u00e0n h\u1ed3i. H\u00f3a ch\u1ea5t m\u1ea1nh v\u00e0 nhi\u1ec7t \u0111\u1ed9 tr\u00ean 95\u00b0C c\u00f3 th\u1ec3 khi\u1ebfn ch\u00fang gi\u00e3n n\u1edf ho\u1eb7c b\u1ecb ph\u00e2n h\u1ee7y. C\u00e1c \u1ee9ng d\u1ee5ng gia \u0111\u00ecnh ti\u00eau chu\u1ea9n v\u1edbi n\u01b0\u1edbc s\u1ea1ch v\u00e0 van d\u1ec5 ti\u1ebfp c\u1eadn s\u1eed d\u1ee5ng thi\u1ebft k\u1ebf v\u00f2ng \u0111\u1ec7m O-ring c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c \u0111\u1ebfn 15 n\u0103m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p v\u00e0 n\u01b0\u1edbc c\u1ee9ng, n\u00ean s\u1eed d\u1ee5ng gio\u0103ng PTFE (Teflon). PTFE tr\u01a1n h\u01a1n cao su g\u1ea5p n\u0103m l\u1ea7n, gi\u00fap gi\u1ea3m l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 xoay van (m\u00e3 s\u1ea3n ph\u1ea9m 60%). N\u00f3 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 t\u1eeb -200\u00b0C \u0111\u1ebfn +260\u00b0C. T\u1ea1i Deso, ch\u00fang t\u00f4i n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m cao c\u1ea5p. <strong>Van bi PPR<\/strong>V\u1edbi c\u00e1c vi\u00ean bi b\u1eb1ng \u0111\u1ed3ng thau \u0111\u01b0\u1ee3c \u0111\u00e1nh b\u00f3ng v\u00e0 l\u00f2 xo b\u00ean trong t\u1ea1o ra l\u1ef1c \u00e9p t\u1eeb 150 \u2013 200N. \u0110i\u1ec1u n\u00e0y gi\u00fap ng\u0103n ng\u1eeba r\u00f2 r\u1ec9 khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i.<\/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>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>In residential and commercial plumbing installations, PPR ball valves serve as the gatekeeper for managing and isolating water flow.&nbsp; These valves regulate pressure, enable maintenance shutdowns,<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":4241,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[],"class_list":["post-4163","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 Ball Valve Seals: O-Ring vs PTFE Explained | DESO Group<\/title>\n<meta name=\"description\" content=\"Discover the technical differences between O-ring and PTFE seals in a PPR ball valve. 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