{"id":15689,"date":"2026-06-01T09:00:00","date_gmt":"2026-06-01T01:00:00","guid":{"rendered":"https:\/\/www.xintaivalves.com\/?p=15689"},"modified":"2026-06-25T12:29:28","modified_gmt":"2026-06-25T04:29:28","slug":"technical-guide-centric-butterfly-valve","status":"publish","type":"post","link":"https:\/\/www.xintaivalves.com\/ms\/blog\/butterfly-valve\/technical-guide-centric-butterfly-valve\/","title":{"rendered":"Apa Itu Katup Kupu-Kupu Sentris? Panduan Lengkap untuk Pembeli Industri"},"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\">Isi kandungan<\/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=\"Togol Jadual Kandungan\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Togol<\/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\/ms\/blog\/butterfly-valve\/technical-guide-centric-butterfly-valve\/#How_a_Centric_Butterfly_Valve_Works\" >Centric Butterfly Valve Berfungsi Bagaimana<\/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\/ms\/blog\/butterfly-valve\/technical-guide-centric-butterfly-valve\/#Types_of_Centric_Butterfly_Valves_by_End_Connection\" >Jenis-jenis Centric Butterfly Valve Mengikut Sambungan Hujung<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.xintaivalves.com\/ms\/blog\/butterfly-valve\/technical-guide-centric-butterfly-valve\/#Wafer_Type_Butterfly_Valve\" >Injap Rama-rama Jenis Wafer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.xintaivalves.com\/ms\/blog\/butterfly-valve\/technical-guide-centric-butterfly-valve\/#Lug_Type_Butterfly_Valve\" >Injap Rama-rama Jenis Lug<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.xintaivalves.com\/ms\/blog\/butterfly-valve\/technical-guide-centric-butterfly-valve\/#Double_Flanged_Butterfly_Valve\" >Double Flanged Butterfly Valve<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.xintaivalves.com\/ms\/blog\/butterfly-valve\/technical-guide-centric-butterfly-valve\/#What_are_the_Differences_Between_a_Centric_vs_Double_Offset_Butterfly_Valve\" >Apakah Perbezaan Antara Centric vs. Double Offset Butterfly Valve?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.xintaivalves.com\/ms\/blog\/butterfly-valve\/technical-guide-centric-butterfly-valve\/#Design_Specifications_and_Materials\" >Spesifikasi Reka Bentuk dan Bahan<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.xintaivalves.com\/ms\/blog\/butterfly-valve\/technical-guide-centric-butterfly-valve\/#What_Are_the_Strengths_and_Weaknesses_of_CentricConcentric_Valves\" >Apakah Kekuatan dan Kelemahan Injap Centric\/Concentric?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.xintaivalves.com\/ms\/blog\/butterfly-valve\/technical-guide-centric-butterfly-valve\/#Where_Are_Concentric_or_Centric_Valves_Used_in_Industry\" >Di Mana Injap Concentric atau Centric Digunakan dalam Industri?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.xintaivalves.com\/ms\/blog\/butterfly-valve\/technical-guide-centric-butterfly-valve\/#How_to_Select_the_Right_Centric_or_Center-line_Butterfly_Valve\" >Cara Memilih Centric atau Center-line Butterfly Valve yang Betul<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.xintaivalves.com\/ms\/blog\/butterfly-valve\/technical-guide-centric-butterfly-valve\/#Conclusion\" >Kesimpulan<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">The <strong>centric<\/strong><a href=\"https:\/\/www.xintaivalves.com\/ms\/product\/centerline-wafer-type-butterfly-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong> injap rama-rama<\/strong><\/a> ialah injap pusing suku dengan batang dan cakera berpusat yang menyediakan kawalan aliran hidup\/mati dalam sistem paip industri. Ia juga dikenali sebagai injap rama-rama sepusat, garis tengah, atau sifar-sesaran.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Operasi pusing suku ringkasnya adalah sebab mengapa ia terutamanya digunakan dalam <a href=\"https:\/\/www.xintaivalves.com\/ms\/blog\/valves-for-water-treatment\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.xintaivalves.com\/blog\/valves-for-water-treatment\/\" rel=\"noreferrer noopener\">rawatan air<\/a>, penjanaan kuasa, dan industri pemprosesan kimia.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Panduan ini menyediakan maklumat tentang reka bentuk <strong>injap rama-rama sepusat<\/strong>, fungsinya, jenisnya, kelebihannya, dan kawasan di mana ia boleh digunakan dengan jayanya.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_a_Centric_Butterfly_Valve_Works\"><\/span><strong><br>Centric Butterfly Valve Berfungsi Bagaimana<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724722-1024x512.webp\" alt=\"Centric Butterfly Valve Berfungsi Bagaimana\" class=\"wp-image-15691\" style=\"width:564px;height:auto\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724722-1024x512.webp 1024w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724722-300x150.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724722-768x384.webp 768w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724722-18x9.webp 18w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724722.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A centric atau sepusat injap berfungsi dengan operasi suku pusingan yang ringkas dan reka bentuk yang mudah. Mengetahui prinsip operasi ini membantu anda memadankan injap dengan keadaan perkhidmatan yang betul.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Konfigurasi sifar-offset ini menampilkan tiga komponen yang diselaraskan pada satu paksi tengah: batang, cakera, dan badan injap. Kerana penjajaran sepusat ini berfungsi sebagai ciri strukturnya yang menentukan, ia dikelaskan sebagai injap rama-rama sepusat atau sifar-offset.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cakera dipasang pada aci yang berpusat dan terletak terus di laluan aliran. Memusing aci 90 darjah menggerakkan cakera dari terbuka sepenuhnya (selari dengan aliran) ke tertutup sepenuhnya (tegak lurus dengan aliran).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pada kedudukan tertutup, cakera memampat terhadap cincin tempat duduk elastomer yang kenyal. Cincin tempat duduk sedikit berubah bentuk di bawah tekanan. Ubah bentuk elastik ini mewujudkan pengedap ketat gelembung yang menghalang kebocoran.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ubah bentuk elastik ini menghasilkan penutupan dua hala yang ketat gelembung, sifar-kebocoran yang diperakui kepada piawaian ujian API 598. Ia juga dikenali sebagai injap rama-rama tempat duduk kenyal kerana reka bentuk tempat duduk elastomer ini.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Types_of_Centric_Butterfly_Valves_by_End_Connection\"><\/span><strong>Jenis-jenis Centric Butterfly Valve Mengikut Sambungan Hujung<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724723-1024x512.webp\" alt=\"3 Jenis Injap Rama-rama Sentrik Mengikut Sambungan Hujung\" class=\"wp-image-15692\" style=\"width:646px;height:auto\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724723-1024x512.webp 1024w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724723-300x150.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724723-768x384.webp 768w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724723-18x9.webp 18w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724723.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Terdapat tiga jenis sambungan hujung utama yang memenuhi keperluan pemasangan dan perkhidmatan yang berbeza. Memilih yang betul mempengaruhi kos pemasangan, akses penyelenggaraan, dan prestasi jangka panjang.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Wafer_Type_Butterfly_Valve\"><\/span><strong>Injap Rama-rama Jenis Wafer<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Injap rama-rama jenis wafer dipasang di antara dua bebibir paip menggunakan bolt tembus. Badan injap tidak mempunyai bebibir integral. Ini menjadikan reka bentuknya padat dan ringan.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jenis wafer adalah pilihan yang paling kos efektif untuk perkhidmatan umum. Standard <strong>Dimensi injap rama-rama jenis wafer<\/strong> mengikut API 609, BS EN 558-1, dan ASME B16.10. Julat saiz meliputi DN 40 hingga DN 600.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Lug_Type_Butterfly_Valve\"><\/span><strong>Injap Rama-rama Jenis Lug<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>injap rama-rama jenis lug<\/strong> menampilkan sisipan berulir yang dicetak ke dalam badan injap. Setiap bebibir paip diboltkan ke injap secara bebas. Ini membolehkan satu sisi saluran paip dikeluarkan tanpa mengganggu sisi lain.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ia sesuai untuk perkhidmatan hujung mati dan sistem yang memerlukan penyingkiran paip hiliran secara berkala. Loji proses dan rangkaian pengedaran air kerap menggunakan jenis ini.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Double_Flanged_Butterfly_Valve\"><\/span><strong>Double Flanged Butterfly Valve<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>injap rama-rama bebibir berganda<\/strong> mempunyai bebibir integral pada kedua-dua hujung. Ia diboltkan terus ke bebibir paip yang sepadan. Badan yang lebih berat sesuai untuk saiz paip yang lebih besar dan keadaan perkhidmatan yang lebih mencabar. Ini sama sekali berbeza daripada <strong>injap rama-rama mengimbangi berkembar,<\/strong> yang akan dibincangkan dalam bahagian seterusnya.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Paip air utama, litar penyejuk loji janakuasa, dan saluran paip industri berdiameter besar menggunakan jenis ini. Minta <strong>double-flanged butterfly valve catalogue<\/strong> from Xintai Valve for configuration details.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_are_the_Differences_Between_a_Centric_vs_Double_Offset_Butterfly_Valve\"><\/span><strong>Apakah Perbezaan Antara Centric vs. Double Offset Butterfly Valve?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The main difference between a centric and a <strong><a href=\"https:\/\/www.xintaivalves.com\/ms\/knowledge-center\/difference-between-double-offset-and-triple-offset-butterfly-valve\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.xintaivalves.com\/knowledge-center\/difference-between-double-offset-and-triple-offset-butterfly-valve\/\" rel=\"noreferrer noopener\">double offset butterfly valve<\/a><\/strong> is in the stem or disc alignment.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Knowing the key differences saves time and prevents costly specification errors.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Centric or zero-offset butterfly valve<\/strong>: The stem aligns with the disc and body centerlines. The seat is a soft elastomeric material. It handles standard pressure classes: PN 6, PN 10, PN 16, and Class 150. It suits clean or mildly corrosive liquids and gases.<\/li>\n\n\n\n<li><strong>Double offset butterfly valve<\/strong>: The stem has two offsets from the disc centerline. The seat is metal or PTFE. It handles higher pressures, elevated temperatures, and abrasive media. It costs more but extends service life in demanding conditions.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>centric butterfly valve manual<\/strong> typically covers quarter-turn operation using a hand lever or gearbox. The ISO 5211 mounting pad accommodates electric, pneumatic, and hydraulic actuators.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Design_Specifications_and_Materials\"><\/span><strong>Spesifikasi Reka Bentuk dan Bahan<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">These parameters define the operating envelope of a standard-centric or zero-offset butterfly valve. Use them to verify compatibility with your piping system before specifying.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Parameter<\/strong><\/td><td><strong>Nilai<\/strong><\/td><\/tr><tr><td><strong>Julat Saiz<\/strong><\/td><td>DN 40 to DN 600<\/td><\/tr><tr><td><strong>Penilaian Tekanan<\/strong><\/td><td>PN 6 \/ PN 10 \/ PN 16 \/ Class 150<\/td><\/tr><tr><td><strong>Standard Reka Bentuk<\/strong><\/td><td>API 609 \/ BS EN 593 \/ IS: 13095<\/td><\/tr><tr><td><strong>Tatap Muka Dim.<\/strong><\/td><td>API 609 \/ BS EN 558-1 \/ ASME B16.10<\/td><\/tr><tr><td><strong>Standar Pengujian<\/strong><\/td><td>API 598 \/ BS EN 12266 Bahagian 1<\/td><\/tr><tr><td><strong>Pemasangan Penggerak<\/strong><\/td><td>ISO 5211<\/td><\/tr><tr><td><strong>Penggerudian Flange<\/strong><\/td><td>ASME B16.5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bahan badan dan cakera: <\/strong>Besi tuang, besi mulur (bersalut nilon atau epoksi), CF8, CF8M.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bahan pelapik tempat duduk: <\/strong>EPDM, NBR, Viton, silikon, PTFE, Hypalon, dan Neoprene. Pilih bahan tempat duduk berdasarkan media dan sifat kimianya.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Reka bentuk batang: <\/strong>Batang kalis letupan. Mencegah pengeluaran batang di bawah tekanan. Membolehkan pembongkaran injap yang selamat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pengekalan tempat duduk: <\/strong>Reka bentuk tempat duduk kunci tengah menghapuskan pergerakan tempat duduk semasa tempat duduk dan tidak duduk cakera.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Are_the_Strengths_and_Weaknesses_of_CentricConcentric_Valves\"><\/span><strong>Apakah Kekuatan dan Kelemahan Injap Centric\/Concentric?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Untuk membantu pembeli membuat pilihan yang termaklum, berikut ialah perbandingan kebaikan dan keburukan injap rama-rama sepusat atau sifar-sesaran.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Kelebihan<\/strong><\/td><td><strong>Keburukan<\/strong><\/td><\/tr><tr><td>Badan yang padat dan ringan. Mengurangkan keperluan sokongan paip dan buruh semasa pemasangan.<\/td><td>Reka bentuk pengedap lembut mengehadkan perkhidmatan kepada kelas tekanan PN 6 hingga PN 16 \/ Kelas 150.<\/td><\/tr><tr><td>Tork operasi yang rendah. Membolehkan penggerak yang lebih kecil dan lebih murah.<\/td><td>Tidak disyorkan untuk stim suhu tinggi tanpa pemilihan bahan tempat duduk yang betul.<\/td><\/tr><tr><td>Beberapa bahagian bergerak. Mengurangkan kekerapan penyelenggaraan dan jumlah kos kitaran hayat.<\/td><td>The disc remains in the flow path when open. This creates a small but measurable pressure drop.<\/td><\/tr><tr><td>Bi-directional shut-off. Seals in both flow directions.<\/td><td><\/td><\/tr><tr><td>Wide seat material range. Handles most liquids, gases, and powders.<\/td><td><\/td><\/tr><tr><td>Line-sized body bore. Maximizes flow and minimizes pressure drop.<\/td><td><\/td><\/tr><tr><td>Serves both on\/off isolation and throttling\/flow control duties.<\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Where_Are_Concentric_or_Centric_Valves_Used_in_Industry\"><\/span><strong>Di Mana Injap Concentric atau Centric Digunakan dalam Industri?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724724-1024x512.webp\" alt=\"Injap Konsentrik atau Sentrik Digunakan dalam Industri\" class=\"wp-image-15693\" style=\"width:686px;height:auto\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724724-1024x512.webp 1024w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724724-300x150.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724724-768x384.webp 768w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724724-18x9.webp 18w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/06\/\u56fe\u724724.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>concentric butterfly valve<\/strong> serves a broad range of industries. Its adaptability to different media, pipe sizes, and actuation methods drives wide adoption.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These valves are mainly used in:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Water and wastewater treatment: <\/strong>Coagulation, sedimentation, filtration, and disinfection. Handles large flow rates with tight shut-off.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.xintaivalves.com\/ms\/blog\/gate-valve\/power-plant-valves-guide-types-functions\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.xintaivalves.com\/blog\/gate-valve\/power-plant-valves-guide-types-functions\/\" rel=\"noreferrer noopener\">Penjanaan kuasa<\/a>: <\/strong>Cooling water systems, condensate pipelines, and auxiliary services.<\/li>\n\n\n\n<li><strong>Chemical and petrochemical processing: <\/strong>PTFE and Viton seat options resist aggressive chemical media.<\/li>\n\n\n\n<li><strong>HVAC systems: <\/strong>Chilled water, hot water, and steam distribution in air handling units and ductwork.<\/li>\n\n\n\n<li><strong>Fire protection: <\/strong>Rangkaian pili air, sistem penyiram, dan sistem pemadam buih.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.xintaivalves.com\/ms\/blog\/mining-industry-valve\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.xintaivalves.com\/blog\/mining-industry-valve\/\" rel=\"noreferrer noopener\">perlombongan<\/a> dan pemprosesan mineral: <\/strong>Pengendalian buburan dengan cakera keluli tahan karat kromium tinggi atau CF8M dan pemilihan tempat duduk tahan kakisan.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Select_the_Right_Centric_or_Center-line_Butterfly_Valve\"><\/span><strong>Cara Memilih Centric atau Center-line Butterfly Valve yang Betul<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Gunakan senarai semak berpandu ini untuk membantu anda memadankan injap yang betul dengan sistem anda. Ini akan membantu mengelakkan kesilapan padanan dan mencegah penyelenggaraan atau penggantian yang mahal.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Apakah jenis media? <\/strong>Adakah ia<strong> <\/strong>cecair, gas, buburan, atau serbuk?<\/li>\n\n\n\n<li><strong>Berapakah tekanan dan suhu operasi? <\/strong>Sahkan penarafan PN yang diperlukan dan keserasian bahan tempat duduk.<\/li>\n\n\n\n<li><strong>Apakah jenis sambungan paip? <\/strong>Adakah ia<strong> <\/strong>wafer, lug, atau bebibir dwi?<\/li>\n\n\n\n<li><strong>Berapakah saiz paip (DN) dan dimensi muka-ke-muka? <\/strong>Sentiasa<strong> <\/strong>rujuk <strong>dimensi injap rama-rama jenis wafer<\/strong> dalam katalog produk.<\/li>\n\n\n\n<li><strong>Kaedah penggeraknya apa? <\/strong>Adakah ia<strong> <\/strong>tuas tangan, kotak gear, elektrik, pneumatik, atau penggerak hidraulik?<\/li>\n\n\n\n<li><strong>Periksa keserasian kimia: <\/strong>Pastikan untuk memilih bahan tempat duduk berdasarkan sifat kimia media.<\/li>\n<\/ol>\n\n\n\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: 'Poppins', Arial, sans-serif;\n    text-decoration: none !important;\n    color: inherit;\n    transition: transform 0.3s ease, box-shadow 0.3s ease;\n  }\n\n  .hero-card:hover {\n    transform: translateY(-3px);\n    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);\n  }\n\n  .hero-image {\n    width: 220px;\n    height: auto;\n    border-radius: 12px;\n    object-fit: contain; \n    background: #ffffff;\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', Arial, sans-serif;\n    text-transform: capitalize;\n  }\n\n  .hero-description {\n    font-size: 1rem;\n    color: #555;\n    margin-bottom: 18px;\n    line-height: 1.6;\n  }\n\n  .hero-link {\n    display: inline-block;\n    padding: 10px 20px;\n    background-color: #D70C19;\n    color: #fff !important;\n    text-decoration: none !important;\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: #a80913; \n  }\n\n  @media (max-width: 640px) {\n    .hero-card {\n      flex-direction: column;\n      text-align: center;\n    }\n    .hero-content {\n      padding-left: 0;\n      padding-top: 20px;\n    }\n    .hero-image {\n      width: 100%;\n      max-width: 280px;\n    }\n  }\n<\/style>\n\n<a class=\"hero-card\" href=\"https:\/\/www.xintaivalves.com\/ms\/products\/ptfe-lined-flanged-centerline-butterfly-valve\/\" target=\"_blank\" rel=\"noopener noreferrer\">\n  <img decoding=\"async\" class=\"hero-image\" src=\"https:\/\/xintaivalves.b-cdn.net\/wp-content\/uploads\/2026\/06\/%E4%B8%AD%E7%BA%BF%E8%A1%AC%E6%B0%9F%E6%B3%95%E5%85%B0%E8%9D%B6%E9%98%80.jpg\" alt=\"Injap Rama-rama Garis Tengah Berlapik PTFE untuk Media Menghakis\">\n  <div class=\"hero-content\">\n    <div class=\"hero-title\">PTFE Lined Flanged Centerline Butterfly Valve<\/div>\n    <div class=\"hero-description\">\n      <strong>Keupayaan Teras:<\/strong> Direka khas untuk mengendalikan media yang sangat menghakis.<br>\n      <strong>Aplikasi Industri:<\/strong> Penyelesaian OEM yang dipercayai untuk pemprosesan kimia, rawatan air, farmaseutikal, dan kemudahan industri.\n    <\/div>\n    <span class=\"hero-link\">Lihat Spesifikasi Teknikal<\/span>\n  <\/div>\n<\/a>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><strong>Kesimpulan<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Injap rama-rama sentrik, sifar-offset, atau garis tengah sesuai untuk sistem industri kerana reka bentuknya yang ringkas, kos operasi yang rendah, dan julat aplikasi yang luas. Ia mengendalikan media air, gas, kimia, dan serbuk merentasi kelas tekanan yang paling biasa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.xintaivalves.com\/ms\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.xintaivalves.com\/blog\/how-xintai-valve-supports-large-scale-epc-projects-globally\/\" rel=\"noreferrer noopener\">Injap Xintai<\/a> merekabentuk injap rama-rama mengikut piawaian API 609, BS EN 593, API 598, ASME B16.10, dan ISO 5211. Jenis injap rama-rama ini termasuk konsentrik, <a href=\"https:\/\/www.xintaivalves.com\/ms\/product\/double-eccentric-butterfly-valves\/\" target=\"_blank\" rel=\"noreferrer noopener\">dwi eksentrik<\/a>, dan <a href=\"https:\/\/www.xintaivalves.com\/ms\/product\/triple-eccentric-butterfly-valves\/\" target=\"_blank\" rel=\"noreferrer noopener\">tiga injap rama-rama sipi<\/a><\/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\/ms\/contact\/\" style=\"font-style:normal;font-weight:500\" target=\"_blank\" rel=\"noreferrer noopener\">Dapatkan Sebut Harga<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>The centric butterfly valve is a quarter-turn valve with a centered stem and disc that provides on\/off flow control in industrial piping systems. It is also known as a concentric, center-line, or zero-offset butterfly valve.\u00a0 Its simple quarter-turn operation is the reason why it is mainly used in water treatment, power generation, and chemical processing [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":15690,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-15689","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-butterfly-valve"],"_links":{"self":[{"href":"https:\/\/www.xintaivalves.com\/ms\/wp-json\/wp\/v2\/posts\/15689","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xintaivalves.com\/ms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xintaivalves.com\/ms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/ms\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/ms\/wp-json\/wp\/v2\/comments?post=15689"}],"version-history":[{"count":2,"href":"https:\/\/www.xintaivalves.com\/ms\/wp-json\/wp\/v2\/posts\/15689\/revisions"}],"predecessor-version":[{"id":15695,"href":"https:\/\/www.xintaivalves.com\/ms\/wp-json\/wp\/v2\/posts\/15689\/revisions\/15695"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/ms\/wp-json\/wp\/v2\/media\/15690"}],"wp:attachment":[{"href":"https:\/\/www.xintaivalves.com\/ms\/wp-json\/wp\/v2\/media?parent=15689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xintaivalves.com\/ms\/wp-json\/wp\/v2\/categories?post=15689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xintaivalves.com\/ms\/wp-json\/wp\/v2\/tags?post=15689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}