{"id":2581,"date":"2026-06-06T09:31:47","date_gmt":"2026-06-06T09:31:47","guid":{"rendered":"https:\/\/www.tgvalve.com\/?p=2581"},"modified":"2026-07-07T09:16:04","modified_gmt":"2026-07-07T09:16:04","slug":"lined-butterfly-valve-vs-metal-seated-comparison","status":"publish","type":"post","link":"https:\/\/www.tgvalve.com\/tr\/blog\/butterfly-valve\/lined-butterfly-valve-vs-metal-seated-comparison\/","title":{"rendered":"Kaplamal\u0131 Kelebek Vanalar m\u0131, Metal Contal\u0131 Vanalar m\u0131 Daha \u0130yi?"},"content":{"rendered":"

Kaplamal\u0131 m\u0131 yoksa metal contal\u0131 vanalar m\u0131 se\u00e7ilece\u011fi, hangisinin daha iyi oldu\u011fu meselesi de\u011fildir. Bu, proses ortam\u0131n\u0131z\u0131n vanan\u0131n \u00f6zellikleriyle e\u015fle\u015fmesi i\u00e7in dikkatli bir de\u011ferlendirmeye dayan\u0131r. <\/p>\n\n\n\n

Projenizde a\u015f\u0131nd\u0131r\u0131c\u0131 veya korozyona neden olan ortamlar varsa, s\u0131zd\u0131rmazl\u0131k tasar\u0131m\u0131 uzun vadeli performans i\u00e7in kritik \u00f6neme sahiptir. Metal contal\u0131 ve astarl\u0131 kelebek vanalar<\/strong><\/a> Temel bile\u015fenleri ayn\u0131 olabilir. Ancak conta tasar\u0131m\u0131, malzeme \u00f6zellikleri ve kullan\u0131m ama\u00e7lar\u0131 bak\u0131m\u0131ndan \u00f6nemli \u00f6l\u00e7\u00fcde farkl\u0131l\u0131k g\u00f6sterirler.<\/p>\n\n\n\n

Bu makale, astar malzemesi, kimyasal diren\u00e7, kullan\u0131m \u00f6mr\u00fc ve maliyet olmak \u00fczere d\u00f6rt kritik se\u00e7im fakt\u00f6r\u00fc a\u00e7\u0131s\u0131ndan her iki astar t\u00fcr\u00fcn\u00fc kar\u015f\u0131la\u015ft\u0131rmaktad\u0131r.<\/p>\n\n\n\n

Kaplamal\u0131 Kelebek Vanalar Nedir?<\/strong><\/h2>\n\n\n\n

(Alternatif metin: Bu g\u00f6rsel, iki farkl\u0131 end\u00fcstriyel vana t\u00fcr\u00fc aras\u0131nda g\u00f6rsel bir kar\u015f\u0131la\u015ft\u0131rma sunmaktad\u0131r. Solda, temiz, laboratuvar benzeri bir ortamda mavi \u00e7izgili bir kelebek vana g\u00f6sterilirken, sa\u011fda ise k\u0131v\u0131lc\u0131mlar\u0131n oldu\u011fu zorlu, y\u00fcksek s\u0131cakl\u0131kl\u0131 bir end\u00fcstriyel ortamda sa\u011flam metal contal\u0131 bir kelebek vana g\u00f6sterilmektedir.)<\/em><\/p>\n\n\n\n

A astarl\u0131 kelebek vana<\/strong> Valf g\u00f6vdesi ve diski, polimer veya kau\u00e7uktan yap\u0131lm\u0131\u015f koruyucu bir tabaka ile kaplanm\u0131\u015ft\u0131r. Yayg\u0131n kaplamalar aras\u0131nda PTFE (Teflon), EPDM, NBR veya di\u011fer flor bazl\u0131 malzemeler bulunur. Bu, i\u015flem ortam\u0131 ile metal bile\u015fenler aras\u0131nda bir bariyer olu\u015fturur.<\/p>\n\n\n\n

Disk \u00e7eyrek tur d\u00f6nd\u00fcr\u00fcld\u00fc\u011f\u00fcnde kapan\u0131r ve astar, s\u0131zd\u0131rmazl\u0131\u011f\u0131 sa\u011flamak i\u00e7in yuvaya bask\u0131 yapar. Bu, s\u0131f\u0131r s\u0131z\u0131nt\u0131l\u0131 kapanma i\u00e7in kabarc\u0131k ge\u00e7irmez bir conta olu\u015fturur ve ISO S\u0131n\u0131f VI olarak s\u0131n\u0131fland\u0131r\u0131l\u0131r.<\/p>\n\n\n\n

PTFE astarl\u0131 kelebek vana nedir?<\/strong><\/h3>\n\n\n\n

A PTFE astarl\u0131 kelebek vana<\/strong><\/a> \u0130\u00e7 kaplama malzemesi olarak politetrafloroetilen kullan\u0131lm\u0131\u015ft\u0131r. Bu malzeme hem valf g\u00f6vdesini hem de diski kaplayarak a\u015f\u0131nd\u0131r\u0131c\u0131 ve kimyasal olarak agresif ortamlara kar\u015f\u0131 dayan\u0131kl\u0131 hale getirir.<\/p>\n\n\n\n

-20\u00b0C ile 180\u00b0C (-4\u00b0F ile 356\u00b0F) aras\u0131ndaki s\u0131cakl\u0131klara dayanabilir. Bu nedenle, s\u00fclf\u00fcrik asit, hidroklorik asit, klor ortam\u0131 ve di\u011fer a\u015f\u0131nd\u0131r\u0131c\u0131 kimyasallar\u0131 ta\u015f\u0131yan boru hatlar\u0131 i\u00e7in ideal bir se\u00e7imdir. <\/p>\n\n\n\n

PTFE kaplama hassas imalat gerektirir. Kaplaman\u0131n d\u00fczg\u00fcn kal\u0131nl\u0131\u011f\u0131 ve metal diske do\u011fru yap\u0131\u015fmas\u0131, conta b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc ve kullan\u0131m \u00f6mr\u00fcn\u00fc do\u011frudan etkiler.<\/p>\n\n\n\n

Kau\u00e7uk Kapl\u0131 Kelebek Vana Nedir?<\/strong><\/h3>\n\n\n\n

A kau\u00e7uk astarl\u0131 kelebek vana<\/strong><\/a> Koltuk ve disk y\u00fczeyini kaplamak i\u00e7in NBR veya EPDM elastomerleri kullan\u0131r.\u00a0<\/p>\n\n\n\n

NBR yakla\u015f\u0131k 100\u00b0C'ye kadar olan s\u0131cakl\u0131klara dayanabilir. EPDM ise yakla\u015f\u0131k 120\u00b0C'ye kadar dayanabilir. <\/p>\n\n\n\n

Kau\u00e7uk kaplamalar do\u011fal esneklik ve g\u00fc\u00e7l\u00fc elastik geri kazan\u0131m \u00f6zelli\u011fi sunarak s\u0131zd\u0131rmazl\u0131\u011f\u0131 destekler. Bu \u00f6zelli\u011fi sayesinde su ar\u0131tma, HVAC sistemleri ve hafif a\u015f\u0131nd\u0131r\u0131c\u0131 \u00e7amur boru hatlar\u0131 i\u00e7in idealdir. <\/p>\n\n\n\n

Ayr\u0131ca, PTFE astarl\u0131 versiyonlara g\u00f6re daha d\u00fc\u015f\u00fck birim maliyetine sahiptirler. Bununla birlikte, g\u00fc\u00e7l\u00fc asitlerde, hidrokarbonlarda veya y\u00fcksek s\u0131cakl\u0131ktaki kimyasal uygulamalarda daha h\u0131zl\u0131 bozulabilirler.<\/p>\n\n\n\n

Kaplamal\u0131 ve yumu\u015fak contal\u0131 vanalar aras\u0131ndaki fark nedir?<\/strong><\/h3>\n\n\n\n

Al\u0131c\u0131lar bazen kar\u0131\u015ft\u0131r\u0131rlar astarl\u0131 kelebek vanalar<\/strong> Standart yumu\u015fak contal\u0131 kelebek vanalarla. <\/p>\n\n\n\n

Standart yumu\u015fak contal\u0131 vanalar<\/a> Metal bir g\u00f6vdenin i\u00e7ine EPDM veya NBR gibi metal olmayan contalar kullan\u0131l\u0131r. Disk kenar\u0131, s\u0131zd\u0131rmazl\u0131k sa\u011flamak i\u00e7in contaya temas eder. Hem g\u00f6vde hem de disk s\u0131v\u0131ya maruz kal\u0131r.<\/p>\n\n\n\n

\u00d6te yandan, astarl\u0131 vanalar diski ve yuvay\u0131 tamamen kaplar. Metalin ortamla temas etmemesi nedeniyle, y\u00fcksek derecede a\u015f\u0131nd\u0131r\u0131c\u0131 uygulamalar i\u00e7in idealdirler. <\/p>\n\n\n\n

Standart yumu\u015fak contal\u0131 vanalar su ve hafif ortamlar i\u00e7in idealdir. \u00d6te yandan, astarl\u0131 vanalar a\u015f\u0131nd\u0131r\u0131c\u0131 ko\u015fullarda kimyasal dirence sahip olacak \u015fekilde tasarlanm\u0131\u015ft\u0131r.<\/p>\n\n\n\n

Metal Contal\u0131 Kelebek Vanalar Nedir?<\/strong><\/h2>\n\n\n\n

Metal contal\u0131 kelebek vanalar\u0131n s\u0131zd\u0131rmazl\u0131k y\u00fczeyleri paslanmaz \u00e7elik, Stellite veya nikel bazl\u0131 malzemeler gibi sert ala\u015f\u0131mlardan yap\u0131lm\u0131\u015ft\u0131r.<\/p>\n\n\n\n

\u00c7o\u011fu tasar\u0131mda eksantrik tasar\u0131mlar kullan\u0131l\u0131r, b\u00f6ylece disk yaln\u0131zca tamamen kapal\u0131yken yuvaya temas eder. Bu, \u00e7al\u0131\u015fma s\u0131ras\u0131nda a\u015f\u0131nmay\u0131 en aza indirir.<\/p>\n\n\n\n

Bu s\u0131zd\u0131rmazl\u0131k, elastik deformasyondan ziyade metalden metale temas esas\u0131na dayan\u0131r. S\u0131cakl\u0131k de\u011fi\u015fimlerine veya malzemenin eskimesine ra\u011fmen kararl\u0131l\u0131\u011f\u0131n\u0131 korur. <\/p>\n\n\n\n

Bu vanalar ISO S\u0131n\u0131f IV ila V s\u0131zd\u0131rmazl\u0131k standard\u0131na ula\u015f\u0131r. Standart paslanmaz \u00e7elik modeller 450\u00b0C'ye kadar \u00e7al\u0131\u015f\u0131rken, sert y\u00fczeyli versiyonlar 600\u00b0C'ye kadar dayanabilir.<\/p>\n\n\n\n

PN25 ile PN100 aras\u0131nda de\u011fi\u015fen bas\u0131n\u00e7 de\u011ferleriyle, buhar sistemleri ve a\u015f\u0131nd\u0131r\u0131c\u0131 par\u00e7ac\u0131klar ta\u015f\u0131yan boru hatlar\u0131 i\u00e7in idealdirler.<\/p>\n\n\n\n

D\u00f6\u015femeli ve Metal Oturma Yeri: Temel Farklar Bir Bak\u0131\u015fta<\/strong><\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Boyut<\/strong><\/td>Astarl\u0131 Kelebek Vana<\/strong><\/td>Metal Contal\u0131 Vana<\/strong><\/td><\/tr>
S\u0131zd\u0131rmazl\u0131k Malzemesi<\/td>PTFE, NBR, EPDM (metalik olmayan)<\/td>Paslanmaz \u00e7elik, stellite, nikel ala\u015f\u0131m\u0131<\/td><\/tr>
S\u0131zd\u0131rmazl\u0131k S\u0131n\u0131f\u0131 (ISO)<\/td>S\u0131n\u0131f VI (baloncuk ge\u00e7irmez)<\/td>S\u0131n\u0131f IV-V (end\u00fcstriyel s\u0131n\u0131f)<\/td><\/tr>
Maksimum S\u0131cakl\u0131k<\/td>180 dereceye kadar (PTFE)<\/td>600 dereceye kadar (sertle\u015ftirilmi\u015f ala\u015f\u0131m)<\/td><\/tr>
Bas\u0131n\u00e7 Derecesi<\/td>PN6-PN25 \/ S\u0131n\u0131f 150<\/td>PN25-PN100 \/ S\u0131n\u0131f 150-600<\/td><\/tr>
Kimyasal Diren\u00e7<\/td>A\u015f\u0131nd\u0131r\u0131c\u0131 ortamlar i\u00e7in m\u00fckemmeldir.<\/td>Orta d\u00fczeyde; genel end\u00fcstriyel kullan\u0131m<\/td><\/tr>
S\u0131zd\u0131rmazl\u0131k Mekanizmas\u0131<\/td>astar\u0131n elastik deformasyonu<\/td>Metal-metal temas\u0131, yap\u0131sal \u00f6n y\u00fckleme<\/td><\/tr>
Birincil Ar\u0131za Modu<\/td>Astar\u0131n eskimesi, a\u015f\u0131nmas\u0131<\/td>Temas b\u00f6lgesinde y\u00fczey a\u015f\u0131nmas\u0131<\/td><\/tr>
Hizmet \u00d6mr\u00fc<\/td>Daha k\u0131sa; astar\u0131n b\u00fct\u00fcnl\u00fc\u011f\u00fcne ba\u011fl\u0131.<\/td>Daha uzun; kontroll\u00fc y\u00fczey a\u015f\u0131nmas\u0131<\/td><\/tr>
Ba\u015flang\u0131\u00e7 Maliyeti<\/td>Daha d\u00fc\u015f\u00fck<\/td>Daha y\u00fcksek<\/td><\/tr>
Ya\u015fam D\u00f6ng\u00fcs\u00fc Maliyeti<\/td>Daha y\u00fcksek (daha s\u0131k de\u011fi\u015ftirme)<\/td>Daha d\u00fc\u015f\u00fck (daha az bak\u0131m m\u00fcdahalesi)<\/td><\/tr>
En \u0130yi Uygulama<\/td>A\u015f\u0131nd\u0131r\u0131c\u0131 kimyasal boru hatlar\u0131<\/a><\/td>Y\u00fcksek s\u0131cakl\u0131k, y\u00fcksek bas\u0131n\u00e7, buhar, par\u00e7ac\u0131klar<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Kelebek Vanalar \u0130\u00e7in Kaplama Malzemeleri ve Kimyasal Uyumluluk<\/strong><\/h2>\n\n\n\n

Kimyasal uyumluluk, se\u00e7im yaparken en kritik fakt\u00f6rd\u00fcr. korozyona dayan\u0131kl\u0131 valf<\/strong>.<\/p>\n\n\n\n