{"id":12761,"date":"2022-01-05T07:43:53","date_gmt":"2022-01-05T07:43:53","guid":{"rendered":"https:\/\/zecovalve.com\/what-is-valve-seat-and-seat-rings-how-many-different-materials-do-they-have-zeco-valve-industrial-valve-manufacturer.html"},"modified":"2022-10-13T13:48:12","modified_gmt":"2022-10-13T13:48:12","slug":"what-is-valve-seat-and-seat-rings-how-many-different-materials-do-they-have-zeco-valve-industrial-valve-manufacturer","status":"publish","type":"post","link":"https:\/\/zecovalve.com\/tr\/what-is-valve-seat-and-seat-rings-how-many-different-materials-do-they-have-zeco-valve-industrial-valve-manufacturer.html","title":{"rendered":"Valf Yuvas\u0131 Malzeme Uyumluluk Tablosu"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-what-is-valve-seat\">Valf Yuvas\u0131 Nedir?<\/h2>\n\n\n\n<p>Valf yuvas\u0131 veya yuva halkas\u0131, valf tapas\u0131n\u0131 veya diskini tamamen kapal\u0131 konumda desteklemek ve bir s\u0131zd\u0131rmazl\u0131k par\u00e7as\u0131 olu\u015fturmak i\u00e7in kullan\u0131l\u0131r. Genellikle valf yuvas\u0131 \u00e7ap\u0131, valfin maksimum ak\u0131\u015f \u00e7ap\u0131d\u0131r. Yuva malzemesi \u00e7ok geni\u015ftir, yuva malzemesi olarak EPDM, NBR, NR, PTF.E, PEEK, gibi her t\u00fcrl\u00fc kau\u00e7uk, plastik, metal malzeme kullan\u0131labilir. PFA, SS315, STELLITE ve benzeri<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/01\/20220105074352-61d54c386d0e8.png\" alt=\"\"\/><figcaption>Kau\u00e7uk Valf Yuvas\u0131<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/01\/20220105074352-61d54c3885bbd.jpg\" alt=\"\"\/><figcaption>PTFE Valf Yata\u011f\u0131\u00a0<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/01\/20220105074352-61d54c388b5db.jpg\" alt=\"\"\/><figcaption>Metal Valf Yuvas\u0131<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n\n\n<p>Kelebek vana i\u00e7in yuva malzemesi genellikle EPDM, NBR, NR (Do\u011fal sert kau\u00e7uk) gibi kau\u00e7uklard\u0131r.<\/p>\n\n\n\n<p>K\u00fcresel vana ve tapal\u0131 vana i\u00e7in yuva malzemesi genellikle PTFE, PEEK vb. gibi plastiklerdir.&nbsp;&nbsp;<\/p>\n\n\n\n<p>K\u00fcresel vana ve s\u00fcrg\u00fcl\u00fc vana i\u00e7in yuva malzemesi genellikle metalden metaledir.&nbsp;<\/p>\n\n\n\n<p>Yumu\u015fak yuva malzemesi kullanan vanalar\u0131n kapatma performanslar\u0131 m\u00fckemmeldir ve hatta s\u0131f\u0131r kabarc\u0131k yuvas\u0131 s\u0131k\u0131l\u0131\u011f\u0131na bile ula\u015fabilir. Dezavantaj\u0131 ise y\u00fcksek s\u0131cakl\u0131k ve y\u00fcksek bas\u0131n\u00e7 uygulamas\u0131na dayanamamalar\u0131d\u0131r.&nbsp;<\/p>\n\n\n\n<p>\u00d6te yandan bu vanalar\u0131n yuva malzemesi metal metal oldu\u011fundan 2500LB&#039;ye kadar y\u00fcksek bas\u0131n\u00e7 de\u011ferlerine dayanabilirler.&nbsp;&nbsp;<\/p>\n\n\n\n<p><strong>Bir vanan\u0131n kapatma performans\u0131n\u0131 etkileyen \u00f6nemli fakt\u00f6rler, kullan\u0131lan ortam\u0131n do\u011fas\u0131 olabilir. <\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Vanalar\u0131n Hizmet \u00d6mr\u00fc A\u015fa\u011f\u0131daki Fakt\u00f6rlerin T\u00fcm\u00fcnden Etkilenir<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Bas\u0131n\u00e7 ve Bas\u0131n\u00e7 Dalgalanmalar\u0131<\/li><li>Medyan\u0131n T\u00fcr\u00fc ve H\u0131z\u0131<\/li><li>S\u0131cakl\u0131k ve S\u0131cakl\u0131k Dalgalanmalar\u0131<\/li><li>Valf D\u00f6ng\u00fc Frekans\u0131 ve \u00c7al\u0131\u015fma H\u0131z\u0131<\/li><li>End\u00fcstriyel Valf Contalar\u0131 ve Yuvalar\u0131 malzemeleri genellikle a\u015fa\u011f\u0131daki malzemeler kullan\u0131larak \u00fcretilir:<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Valf Yuvas\u0131 Malzeme Uyumluluk Tablosu<\/h2>\n\n\n\n<p><strong>BUNA-N (HYCAR veya Nitril<\/strong>)<\/p>\n\n\n\n<p>Buna-N, ya\u011fa, suya, solventlere ve hidrolik s\u0131v\u0131lara kar\u015f\u0131 iyi dirence sahip genel ama\u00e7l\u0131 bir polimerdir. Ayn\u0131 zamanda iyi bir s\u0131k\u0131\u015ft\u0131rma, a\u015f\u0131nma direnci ve \u00e7ekme mukavemeti g\u00f6sterir. Bu malzeme, parafin bazl\u0131 malzemeler, ya\u011f asitleri, ya\u011flar, alkoller veya gliserinin mevcut oldu\u011fu proses alanlar\u0131nda tamamen etkilenmedi\u011fi i\u00e7in son derece iyi performans g\u00f6sterir.<\/p>\n\n\n\n<p>Buna-N, y\u00fcksek polar solventler (asetonlar, ketonlar), klorlu hidrokarbonlar, ozon veya nitro hidrokarbonlar\u0131n yak\u0131n\u0131nda kullan\u0131lmamal\u0131d\u0131r. S\u0131cakl\u0131k aral\u0131\u011f\u0131 maksimum 107\u00b0C&#039;dir. Hycar siyah renklidir ve renk de\u011fi\u015fiminin tolere edilemedi\u011fi durumlarda kullan\u0131lmamal\u0131d\u0131r. Kar\u015f\u0131la\u015ft\u0131r\u0131labilir bir yedek neopren olarak kabul edilir. Ba\u015fl\u0131ca farklar \u015funlard\u0131r: Buna-N&#039;nin s\u0131cakl\u0131k s\u0131n\u0131r\u0131 daha y\u00fcksektir; neopren ya\u011flara kar\u015f\u0131 daha dayan\u0131kl\u0131d\u0131r.<\/p>\n\n\n\n<p><strong>KARBON DOLGULU TFE<\/strong><\/p>\n\n\n\n<p>Karbon dolgulu TFE, buhar uygulamalar\u0131 ve y\u00fcksek verimli ya\u011f bazl\u0131 termal ak\u0131\u015fkanlar i\u00e7in m\u00fckemmel bir yuva malzemesidir. Grafit i\u00e7eren dolgular, bu koltuk malzemesinin di\u011fer dolgulu veya g\u00fc\u00e7lendirilmi\u015f TFE koltuklara g\u00f6re daha iyi bir \u00e7evrim \u00f6mr\u00fcne sahip olmas\u0131n\u0131 sa\u011flar. S\u0131cakl\u0131k aral\u0131\u011f\u0131 -29\u00b0C ila 260\u00b0C&#039;dir. Kimyasal direnci di\u011fer TFE koltuklara e\u015fittir.<\/p>\n\n\n\n<p><strong>DELRIN\u00ae<\/strong><\/p>\n\n\n\n<p>Delrin, DuPont&#039;un Polioksi-metilene y\u00f6nelik ticari markas\u0131d\u0131r. Hostaform, Celecon, Kepital, Duracon, Lupital veya Ultraform olarak da bilinebilir. Delrin \u00e7ok sert bir malzemedir ve so\u011fuk ak\u0131\u015fa maruz kalmaz. Mukavemet, sertlik, sa\u011flaml\u0131k, stabilite, a\u015f\u0131nma direnci ve d\u00fc\u015f\u00fck s\u00fcrt\u00fcnmenin m\u00fckemmel bir kombinasyonuna sahiptir. Delrin y\u00fcksek \u0131s\u0131 direncine ve d\u00fc\u015f\u00fck su emme \u00f6zelli\u011fine sahiptir ancak asitlere kar\u015f\u0131 hassast\u0131r. S\u0131zd\u0131rmazl\u0131k malzemesi olarak kullan\u0131ld\u0131\u011f\u0131nda Delrin, 5.000 PSI&#039;a kadar olan bas\u0131n\u00e7lar i\u00e7in kabul edilebilir. \u00c7al\u0131\u015fma s\u0131cakl\u0131k aral\u0131\u011f\u0131 -70 \u00baF ile 180 \u00baF aras\u0131ndad\u0131r.<\/p>\n\n\n\n<p><strong>EPDM<\/strong><\/p>\n\n\n\n<p>EPDM, etilen-propilen dien monomerinden yap\u0131lm\u0131\u015f bir terpolimer elastomeridir. EPDM iyi a\u015f\u0131nma ve y\u0131rt\u0131lma direncine sahiptir ve \u00e7e\u015fitli asitlere ve alkalilere kar\u015f\u0131 m\u00fckemmel kimyasal diren\u00e7 sunar. Ya\u011flar\u0131n sald\u0131r\u0131lar\u0131na kar\u015f\u0131 hassast\u0131r ve petrol ya\u011flar\u0131, g\u00fc\u00e7l\u00fc asitler veya g\u00fc\u00e7l\u00fc alkali i\u00e7eren uygulamalar i\u00e7in \u00f6nerilmez.<\/p>\n\n\n\n<p>Bu Malzeme bas\u0131n\u00e7l\u0131 hava hatlar\u0131nda kullan\u0131lmamal\u0131d\u0131r. Son derece iyi hava ko\u015fullar\u0131na ve ozon direncine sahiptir. S\u0131cakl\u0131k derecesi -29\u00b0C ile 107\u00b0C aras\u0131ndad\u0131r (121\u00b0C aral\u0131kl\u0131 hizmet). Ketonlar ve alkoller i\u00e7in olduk\u00e7a iyidir.<\/p>\n\n\n\n<p><strong>HYPALON\u00ae<\/strong><\/p>\n\n\n\n<p>Hypalon oksidasyona, ozona kar\u015f\u0131 \u00e7ok iyi bir dirence ve iyi bir alev direncine sahiptir. Nitrik, hidroflorik ve s\u00fclf\u00fcrik asit gibi oksitleyici asitlere kar\u015f\u0131 koyaca\u011f\u0131 geli\u015ftirilmi\u015f asit direnci d\u0131\u015f\u0131nda neoprene benzer. Hypalon&#039;un a\u015f\u0131nma direnci m\u00fckemmeldir, nitrillere e\u015fde\u011ferdir. Ya\u011f ve solvent direnci bir nebze neopren ve nitrillerinki aras\u0131ndad\u0131r. Tuzlar\u0131n Hypalon \u00fczerinde \u00e7ok az etkisi vard\u0131r.<\/p>\n\n\n\n<p>Hypalon&#039;un konsantre oksitleyici asitlere, esterlere, ketonlara, klorlu, aromatik ve nitro hidrokarbonlara maruz kalmas\u0131 \u00f6nerilmez. Buhar hizmetinde kullan\u0131lmamal\u0131d\u0131r. S\u0131cakl\u0131k derecesi -18\u00b0C ila 104\u00b0C aras\u0131ndad\u0131r. Koltuklar beyaz g\u0131daya uygundur ve yiyeceklerde kullan\u0131labilir<\/p>\n\n\n\n<p><strong>NEOPREN<\/strong><\/p>\n\n\n\n<p>Neopren, arzu edilen bir\u00e7ok \u00f6zelli\u011fe sahip, \u00e7ok ama\u00e7l\u0131 bir polimerdir. Neopren, d\u00fc\u015f\u00fck s\u0131k\u0131\u015ft\u0131rmal\u0131 alev direnci ve hayvansal ve bitkisel ya\u011f direnci ile y\u00fcksek esnekli\u011fe sahiptir. Esas olarak ka\u011f\u0131t hamuru ve ka\u011f\u0131t uygulamalar\u0131nda kullan\u0131lmas\u0131 tavsiye edilir.<\/p>\n\n\n\n<p>Genel olarak neopren tavsiye edilmez ve g\u00fc\u00e7l\u00fc oksitleyici asitler, klorlu solventlerin \u00e7o\u011fu, esterler, ketonlar, aromatik hidrokarbonlar ve hidrolik s\u0131v\u0131lar\u0131n sald\u0131r\u0131s\u0131na u\u011frar. Neopren genel olarak orta dereceli kimyasallardan, ya\u011flardan, greslerden ve bir\u00e7ok ya\u011f ve solventten etkilenmez. S\u0131cakl\u0131k derecesi -29\u00b0C ila 82\u00b0C aras\u0131ndad\u0131r. Koltuklar siyah renkte olup a\u011fart\u0131lm\u0131\u015f ka\u011f\u0131t \u00e7izgilerinde kullan\u0131lmamal\u0131d\u0131r.<\/p>\n\n\n\n<p><strong>PEEK (Polietereterketon)<\/strong><\/p>\n\n\n\n<p>PEEK, sert kimyasallara kar\u015f\u0131 m\u00fckemmel dirence sahip, y\u00fcksek performansl\u0131, g\u00f6zeneksiz, yar\u0131 sert bir termoplastiktir. Virgin PEEK do\u011fal olarak a\u015f\u0131nmaya dayan\u0131kl\u0131d\u0131r. M\u00fckemmel mekanik dayan\u0131ma ve boyutsal stabiliteye sahiptir ve y\u00fcksek s\u0131cakl\u0131k\/y\u00fcksek korozyon ortamlar\u0131nda kullan\u0131ma uygundur. PEEK, s\u00fcrekli olarak s\u0131cak su ve buhara maruz kalmaktan etkilenmemesi nedeniyle birinci s\u0131n\u0131f bir valf yuvas\u0131 malzemesi olarak kabul edilir. \u00c7al\u0131\u015fma s\u0131cakl\u0131\u011f\u0131 aral\u0131\u011f\u0131 -70 \u00baF ile 600 \u00baF aras\u0131ndad\u0131r.<\/p>\n\n\n\n<p><strong>PTFE (Teflon\u00ae&#039;un TFE&#039;si)<\/strong><\/p>\n\n\n\n<p>PTFE t\u00fcm plastikler aras\u0131nda kimyasal olarak en dayan\u0131kl\u0131 olan\u0131d\u0131r. Ayn\u0131 zamanda m\u00fckemmel termal ve elektriksel yal\u0131t\u0131m \u00f6zelliklerine sahiptir. PTFE&#039;nin mekanik \u00f6zellikleri di\u011fer m\u00fchendislik plastikleriyle kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda d\u00fc\u015f\u00fckt\u00fcr ancak \u00f6zellikleri, markaya ve uygulamaya ba\u011fl\u0131 olarak -40\u00b0C ile 204\u00b0C aras\u0131ndaki geni\u015f s\u0131cakl\u0131k aral\u0131\u011f\u0131nda faydal\u0131 seviyelerde kal\u0131r.<\/p>\n\n\n\n<p><strong>RTFE (G\u00fc\u00e7lendirilmi\u015f TFE)<\/strong><\/p>\n\n\n\n<p>RTFE, mukavemeti ve a\u015f\u0131nd\u0131r\u0131c\u0131 a\u015f\u0131nmaya, so\u011fuk ak\u0131\u015fa ve kal\u0131planm\u0131\u015f yuvalardaki n\u00fcfuza kar\u015f\u0131 direnci art\u0131rmak i\u00e7in se\u00e7ilen oranda cam elyaf dolgu maddesiyle birle\u015ftirilmi\u015ftir. Takviye, dolgusuz TFE&#039;den daha y\u00fcksek bas\u0131n\u00e7 ve s\u0131cakl\u0131kta uygulamaya izin verir. Tipik s\u0131cakl\u0131k aral\u0131\u011f\u0131 -40\u00b0C ila 232\u00b0C&#039;dir. Hidroflorik asit ve s\u0131cak g\u00fc\u00e7l\u00fc kostikler gibi cama zarar veren uygulamalarda RTFE kullan\u0131lmamal\u0131d\u0131r.<\/p>\n\n\n\n<p><strong>TFM1600<\/strong><\/p>\n\n\n\n<p>TFM1600, Valf Contalar\u0131 ve Yuvalar\u0131 listemizde yer almaktad\u0131r \u00e7\u00fcnk\u00fc PTFE&#039;nin ola\u011fan\u00fcst\u00fc kimyasal ve \u0131s\u0131 direnci \u00f6zelliklerini koruyan ancak \u00f6nemli \u00f6l\u00e7\u00fcde daha d\u00fc\u015f\u00fck erime viskozitesine sahip de\u011fi\u015ftirilmi\u015f bir PTFE versiyonudur. Sonu\u00e7 olarak so\u011fuk ak\u0131\u015f, g\u00f6zeneklilik, ge\u00e7irgenlik ve bo\u015fluk i\u00e7eri\u011fi azal\u0131r. Y\u00fczeyler daha p\u00fcr\u00fczs\u00fczd\u00fcr ve torklar\u0131 azalt\u0131r. TFM1600&#039;\u00fcn teorik servis aral\u0131\u011f\u0131 -200\u00b0C ila 260\u00b0C&#039;dir.<\/p>\n\n\n\n<p><strong>TFM1600+20%GF<\/strong><\/p>\n\n\n\n<p>TFM1600+20%GF, TFM1600&#039;\u00fcn cam elyaf takviyeli versiyonudur. RTFE&#039;ye benzer ancak TFM1600&#039;\u00fcn avantaj\u0131yla, cam dolgulu versiyon a\u015f\u0131nmaya kar\u015f\u0131 daha fazla diren\u00e7 sa\u011flar ve daha y\u00fcksek bas\u0131n\u00e7larda stabiliteyi art\u0131r\u0131r.<\/p>\n\n\n\n<p><strong>TFM4215<\/strong><\/p>\n\n\n\n<p>TFM4215, se\u00e7ici grafitle\u015ftirilmi\u015f karbon dolgulu bir TFM malzemesidir. Eklenen karbon, daha y\u00fcksek bas\u0131n\u00e7 ve s\u0131cakl\u0131k kombinasyonlar\u0131 i\u00e7in stabiliteyi art\u0131r\u0131r.<\/p>\n\n\n\n<p><strong>UHMWPE (Ultra Y\u00fcksek Molek\u00fcler A\u011f\u0131rl\u0131kl\u0131 Polietilen)<\/strong><\/p>\n\n\n\n<p>UHMWPE dayan\u0131kl\u0131, uzun \u00f6m\u00fcrl\u00fc, a\u015f\u0131nmaya\/korozyona dayan\u0131kl\u0131 bir malzemedir. Y\u00fcksek Mod\u00fcll\u00fc Polietilen (HMPE) veya Y\u00fcksek Performansl\u0131 Polietilen (HPPE) olarak da bilinir. Ayr\u0131ca g\u0131da ve farmas\u00f6tik ekipmanlara y\u00f6nelik FDA ve USDA kabullerini kar\u015f\u0131lar ve sterilize etmek i\u00e7in canl\u0131 buhar veya kaynar su ile periyodik olarak temizlendi\u011finde 180\u00b0F&#039;ye kadar olan uygulamalarda iyi bir performans sergiler.<\/p>\n\n\n\n<p>UHMWPE, d\u00fc\u015f\u00fck radyasyonlu hizmet i\u00e7in idealdir ve TFE&#039;nin yasak oldu\u011fu t\u00fct\u00fcn end\u00fcstrisinin gereksinimlerini kar\u015f\u0131lar. Oksitleyici asitler ve organik \u00e7\u00f6z\u00fcc\u00fcler hari\u00e7, a\u015f\u0131nd\u0131r\u0131c\u0131 kimyasallara kar\u015f\u0131 olduk\u00e7a dayan\u0131kl\u0131d\u0131r. \u00c7al\u0131\u015fma s\u0131cakl\u0131\u011f\u0131 aral\u0131\u011f\u0131 -70 \u00baF ile 180 \u00baF aras\u0131ndad\u0131r.<\/p>\n\n\n\n<p><strong>VITON\u00ae (Florokarbon, FKM veya FPM)<\/strong><\/p>\n\n\n\n<p>Florokarbon elastomerleri do\u011fas\u0131 gere\u011fi geni\u015f bir kimyasal yelpazesiyle uyumludur. \u00d6nemli konsantrasyon ve s\u0131cakl\u0131k aral\u0131klar\u0131n\u0131 kapsayan bu kapsaml\u0131 kimyasal uyumluluk nedeniyle, florokarbon elastomerleri, b\u0131\u00e7ak kap\u0131s\u0131 valf yuvalar\u0131n\u0131n yap\u0131m malzemesi olarak geni\u015f \u00e7apta kabul g\u00f6rm\u00fc\u015ft\u00fcr.<\/p>\n\n\n\n<p>Florokarbon, mineral asitleri, tuz \u00e7\u00f6zeltilerini, klorlu hidrokarbonlar\u0131 ve petrol ya\u011flar\u0131n\u0131 i\u00e7eren \u00e7o\u011fu uygulamada kullan\u0131labilir. \u00d6zellikle hidrokarbon hizmetinde iyidir. S\u0131cakl\u0131k derecesi -29\u00b0C ila 149\u00b0C aras\u0131ndad\u0131r. Rengi gri, siyah veya k\u0131rm\u0131z\u0131 olup a\u011fart\u0131lm\u0131\u015f ka\u011f\u0131t \u00e7izgilerinde kullan\u0131labilir.<\/p>\n\n\n\n<p>V\u0130TON buhar veya s\u0131cak su hizmetine uygun de\u011fildir ancak O-ring formunda tipine\/markas\u0131na ba\u011fl\u0131 olarak s\u0131cak su ile kar\u0131\u015ft\u0131r\u0131lm\u0131\u015f hidrokarbon hatlar\u0131nda da kullan\u0131labilir. Koltuk malzemeleri i\u00e7in FKM, s\u0131cak suya daha fazla diren\u00e7 sunabilir.<\/p>\n\n\n\n<!-- Andy:h-related-tags -->\n<h2 id=\"h-related-tags\">\u0130lgili Etiketler :<\/h2>\n<!-- \/Andy:h-related-tags -->\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/\">ZECO Valf<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/thermoplastic-materials-as-valve-seat.html\/\">K\u00fcresel Vana Yuvas\u0131 ve Kelebek Vana Yuvas\u0131 Olarak Termoplastik Malzemeler<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/introduction-of-epdm-nbr-butterfly-valve-seat-industrial-valve-information-news-zeco-valve.html\/\">NBR Kelebek Vana<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/urun\/12-inch-gate-valve\/\">12 in\u00e7 S\u00fcrg\u00fcl\u00fc Vana Tedarik\u00e7isi<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/tag\/shanghai-pressure-reducing-valve-factory\/\">\u015eangay Bas\u0131n\u00e7 D\u00fc\u015f\u00fcr\u00fcc\u00fc Vana Fabrikas\u0131<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/china-gate-valves-suppliersnon-rising-stem-gate-valvesks-gate-valves.html\/\">S\u00fcrg\u00fcl\u00fc Vana Nedir?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/urun\/manual-gate-valve\/\">Manuel Kumandal\u0131 S\u00fcrg\u00fcl\u00fc Vana \u00dcreticisi<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/the-function-of-globe-valve-in-pipeline-system.html\/\">Glob Vanalar Nedir?<\/a>\n\n<\/div>\n\n\n\n<p>\u00d6ncesi ve sonras\u0131yla on makale<\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/tr\/nigerian-president-appealed-to-increasing-gas-supply-zeco-valve-api-approved-valve-manufacturer.html\/\">Nijerya Devlet Ba\u015fkan\u0131 Gaz Arz\u0131n\u0131 Art\u0131rmaya \u00c7a\u011fr\u0131da Bulundu \u2013 Zeco Valve | API onayl\u0131 valf \u00fcreticisi<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/tr\/oil-demands-decline-indicates-global-economic-growth-slow-zeco-valve-api-approved-valve-manufacturer.html\/\">Petrol Taleplerindeki D\u00fc\u015f\u00fc\u015f K\u00fcresel Ekonomik B\u00fcy\u00fcmenin Yava\u015flad\u0131\u011f\u0131n\u0131 G\u00f6steriyor \u2013 Zeco Valve | API onayl\u0131 valf \u00fcreticisi<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/tr\/safety-valve-prv-versus-relief-valve-psv-what-is-the-difference-zeco-valve-industrial-valve-manufacturer.html\/\">Emniyet Valfi (PRV) ile kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda. Tahliye Vanas\u0131 (PSV): Fark Nedir? \u2013 Zeco Vana | End\u00fcstriyel vana \u00fcreticisi<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/tr\/deal-between-rosneft-and-vitol-fizzled-out-zeco-valve-api-approved-valve-manufacturer.html\/\">Rosneft ve Vitol Aras\u0131ndaki Anla\u015fma Fiyaskoyla sonu\u00e7land\u0131 \u2013 Zeco Valve | API onayl\u0131 valf \u00fcreticisi<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/tr\/export-excellent-quality-of-pneumatic-actuators-to-sa-south-africa-zeco-valve-industrial-valve-manufacturer.html\/\">m\u00fckemmel kalitede pn\u00f6matik akt\u00fcat\u00f6rlerin g\u00fcney afrika&#039;ya ihracat\u0131 \u2013 Zeco Vana | End\u00fcstriyel vana \u00fcreticisi<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/tr\/whats-the-difference-between-api-and-asme-standard-zeco-valve-industrial-valve-manufacturer.html\/\">API ile ASME standard\u0131 aras\u0131ndaki fark nedir? \u2013 Zeco Vana | End\u00fcstriyel vana \u00fcreticisi<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/tr\/russian-oil-export-to-asia-reaching-a-new-high-level-zeco-valve-api-approved-valve-manufacturer.html\/\">Rusya&#039;n\u0131n Asya&#039;ya Petrol \u0130hracat\u0131 Yeni Bir Seviyeye Ula\u015f\u0131yor \u2013 Zeco Valve | API onayl\u0131 valf \u00fcreticisi<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/tr\/api-6d-ball-valve-vs-api-608-ball-valve-how-are-they-different-zeco-valve-industrial-valve-manufacturer.html\/\">API 6D K\u00fcresel vana VS API 608 K\u00fcresel vana, Nas\u0131l farkl\u0131lar? \u2013 Zeco Vana | End\u00fcstriyel vana \u00fcreticisi<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/tr\/south-stream-gas-pipe-will-not-be-abolished-zeco-valve-api-approved-valve-manufacturer.html\/\">G\u00fcney Ak\u0131m Do\u011falgaz Borusu Kald\u0131r\u0131lmayacak \u2013 Zeco Vana | API onayl\u0131 valf \u00fcreticisi<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/tr\/how-a-control-valve-positioner-works-zeco-valve-industrial-valve-manufacturer.html\/\">Kontrol Valfi Pozisyoner Nas\u0131l \u00c7al\u0131\u015f\u0131r \u2013 Zeco Valf | End\u00fcstriyel vana \u00fcreticisi<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Valf Yuvas\u0131 Nedir? Valf yuvas\u0131 veya yuva halkas\u0131, valf tapas\u0131n\u0131 veya diskini tam olarak desteklemek i\u00e7in kullan\u0131l\u0131r. <a title=\"Valf Yuvas\u0131 Malzeme Uyumluluk Tablosu\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/tr\/what-is-valve-seat-and-seat-rings-how-many-different-materials-do-they-have-zeco-valve-industrial-valve-manufacturer.html\" aria-label=\"Valf Yuvas\u0131 Malzeme Uyumluluk Tablosu hakk\u0131nda daha fazla bilgi\">Daha fazla bilgi edinin<\/a><\/p>","protected":false},"author":2,"featured_media":12756,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[1],"tags":[3236,1998,3234,3235],"class_list":["post-12761","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-butterfly-valve-seat-material","tag-pctfe-valve-seat-manufacturer","tag-valve-seat-material-compatibility-chart","tag-valve-seat-rings","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/01\/20220105074352-61d54c386d0e8.png",318,306,false],"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/tr\/author\/jerry"},"comment_info":0,"category_info":[{"term_id":1,"name":"Uncategorized","slug":"uncategorized","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":452,"filter":"raw","cat_ID":1,"category_count":452,"category_description":"","cat_name":"Uncategorized","category_nicename":"uncategorized","category_parent":0}],"tag_info":[{"term_id":3236,"name":"butterfly valve seat material","slug":"butterfly-valve-seat-material","term_group":0,"term_taxonomy_id":3236,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1998,"name":"PCTFE Valve Seat Manufacturer","slug":"pctfe-valve-seat-manufacturer","term_group":0,"term_taxonomy_id":1998,"taxonomy":"post_tag","description":"<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_7bd7e9-a7\"} \/-->\r\n\r\n<!-- wp:generateblocks\/button-container {\"uniqueId\":\"6d8495a3\",\"isDynamic\":true,\"blockVersion\":2} -->\r\n<!-- wp:generateblocks\/button {\"uniqueId\":\"3d442e11\",\"hasUrl\":true,\"target\":true,\"backgroundColor\":\"#0366d6\",\"textColor\":\"#ffffff\",\"backgroundColorHover\":\"#222222\",\"textColorHover\":\"#ffffff\",\"paddingTop\":\"15\",\"paddingRight\":\"20\",\"paddingBottom\":\"15\",\"paddingLeft\":\"20\"} -->\r\n<a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"mailto:commercial@zecovalve.com\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>GET PCTFE VALVE SEAT PRICE<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-what-is-pctfe\">What is PCTFE?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nPCTFE(Polychlorotrifluoroethylene) is a fluorocarbon-based polymer. It offers a unique combination of physical and mechanical properties, nonflammability, and low permeation capability to moisture and steam atmosphere compared to other plastics. The heat resistance and chemical resistance capability are less than PFA and FEP, however, mechanical characteristics(especially hardness) are superior. It is suitable for utilizing in the temperature range of -200\u2103\uff5e150\u2103, especially for cryogenic applications such as oxygen, hydrogen, nitrogen, and more. PCTFE has a very strong resistance performance to low temperatures.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Property List of PCTFE<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:table {\"className\":\"is-style-stripes\"} -->\r\n<figure class=\"wp-block-table is-style-stripes\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td><strong>Item<\/strong><\/td>\r\n<td><strong>Color<\/strong><\/td>\r\n<td><strong>Density<\/strong><\/td>\r\n<td><strong>Hardness<\/strong><\/td>\r\n<td><strong>Compressive strength<\/strong><\/td>\r\n<td><strong>Long-term Temp.<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Units<\/td>\r\n<td><\/td>\r\n<td>g\/cm3<\/td>\r\n<td>Shore D<\/td>\r\n<td>Mpa<\/td>\r\n<td>\u2103<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Value<\/td>\r\n<td>Translucent<\/td>\r\n<td>2.13<\/td>\r\n<td>75-85<\/td>\r\n<td>80<\/td>\r\n<td>-80~115<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n<!-- \/wp:table -->\r\n\r\n<!-- wp:heading -->\r\n<h2><strong><a href=\"https:\/\/zecovalve.com\/product-category\/ball-valve\"><mark class=\"has-inline-color has-contrast-2-color\" style=\"background-color: var(--base)\">Ball Valve<\/mark><\/a><\/strong> Seats<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nSeats and inserts, which are important components in the valve industry, are critical components, PTFE is very often chosen as the raw material. PTFE provides a low-friction seat, with excellent media compatibility. Filled grades provide wear resistance and can support seating loads of the higher class of valves.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2><strong><mark class=\"has-inline-color has-contrast-2-color\" style=\"background-color: var(--base)\"><a href=\"https:\/\/zecovalve.com\/product-category\/butterfly-valve\">Butterfly Valve<\/a><\/mark><\/strong> Seats<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nPTFE is one of the Butterfly Valve Seat Materials. PTFE Butterfly Valve Seats Are Available in Pure or Reinforced PTFE to Meet Specific Requirements for Different Working Environments.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nPTFE Seats' Excellent Chemical Resistance, High-Temperature Resistance, Self-lubrication, and Low Friction Properties of PTFE Make It a General Material for Valve Seats.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>VALVE SEAT MATERIAL SELECTION<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:table {\"className\":\"is-style-stripes\"} -->\r\n<figure class=\"wp-block-table is-style-stripes\">\r\n<table>\r\n<thead>\r\n<tr>\r\n<th class=\"has-text-align-center\" data-align=\"center\">Material Name<\/th>\r\n<th>Main Properties<\/th>\r\n<th>Notes<\/th>\r\n<th>Temperature Range<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">VIRGIN PTFE<\/td>\r\n<td>Very low coefficient of friction and excellent chemical resistance.<\/td>\r\n<td>FDA approved<\/td>\r\n<td>-40\u00b0C to 260\u00b0C<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">15% Glass Filled PTFE<\/td>\r\n<td>Decreased compressive strength and lower deformation under load than virgin PTFE.<\/td>\r\n<td>Abrasive material<\/td>\r\n<td>-40\u00b0C to 260\u00b0C<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">25% Glass Filled PTFE<\/td>\r\n<td>Similar to 15% Glass better wear resistance, higher compressive strength, and lower deformation under load.<\/td>\r\n<td>Abrasive material<\/td>\r\n<td>-40\u00b0C to 260\u00b0C<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Stainless Steel Filled PTFE<\/td>\r\n<td>Extremely hard-wearing. Excellent strength and stability under extreme loads and elevated temperatures.<\/td>\r\n<td>Can be used in steam and thermal fluid applications<\/td>\r\n<td>-40\u00b0C to 260\u00b0C<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">TFM<\/td>\r\n<td>Much denser polymer structure than Virgin PTFE. Displays better stress recovery.<\/td>\r\n<td>Modified TFE Polymer<\/td>\r\n<td>-40\u00b0C to 260\u00b0C<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Carbon Graphite filled TFM<\/td>\r\n<td>Lower thermal expansion-contraction rate than conventional TFM.<\/td>\r\n<td>Ideal for use in steam and thermal fluid applications<\/td>\r\n<td>-40\u00b0C to 260\u00b0C and even 320\u00b0C on Thermal Fluid applications<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">UHMWPE<\/td>\r\n<td>Highly resistant to corrosive chemicals, with the exception of oxidizing acids and organic solvents.<\/td>\r\n<td>Also known as High Modulus Polyethylene (HMPE) or High-Performance Polyethylene (HPPE)<\/td>\r\n<td>-40\u00b0C to +80\u00b0C<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">PCTFE<\/td>\r\n<td>Excellent for cryogenic and Oxygen use.<\/td>\r\n<td>A homo-polymer of Chlorotrifluoroethylene<\/td>\r\n<td>-270\u00b0C to 260\u00b0C<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Virgin PEEK 450G<\/td>\r\n<td>Excellent chemical resistance and mechanical properties at elevated temperatures.<\/td>\r\n<td>An organic polymer thermoplastic<\/td>\r\n<td>-40\u00b0C to 260\u00b0C<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Carbon Filled PEEK<\/td>\r\n<td>Many similar properties to Virgin PEEK. Particularly suitable for elevated temperatures and high-load situations.<\/td>\r\n<td>Low coefficient of friction and suitable for many extremely corrosive applications<\/td>\r\n<td>-40\u00b0C to 260\u00b0C<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">PEEK HT<\/td>\r\n<td>Retains all key features and benefits of PEEK 450G but retains physical properties to a higher temperature.<\/td>\r\n<td>Can be supplied in both virgins unfilled or as-filled compounded material<\/td>\r\n<td>up to 260\u00b0C<\/td>\r\n<\/tr>\r\n<tr>\r\n<td class=\"has-text-align-center\" data-align=\"center\">Acetal and Delrin<\/td>\r\n<td>Displays good resistance to wear and deformation under load.<\/td>\r\n<td>Excellent for valve seat applications<\/td>\r\n<td>up to 80\u00b0C<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n<!-- \/wp:table -->","parent":0,"count":5,"filter":"raw"},{"term_id":3234,"name":"valve seat material compatibility chart","slug":"valve-seat-material-compatibility-chart","term_group":0,"term_taxonomy_id":3234,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3235,"name":"Valve Seat Rings","slug":"valve-seat-rings","term_group":0,"term_taxonomy_id":3235,"taxonomy":"post_tag","description":"<!-- wp:paragraph -->\r\n\r\nThe Valve seat or seat ring is used to support the valve plug or disc in a fully closed position and to form a sealing part. Usually, the valve seat diameter is the maximum flow diameter of the valve. The seat material is very wide, all kinds of rubber, plastic, and metal materials can be used as seat material, such as EPDM, NBR, NR, PTF.E, PEEK, PFA, SS315, STELLITE, and so on\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_6f889b-ad\"} \/-->\r\n\r\n<!-- wp:generateblocks\/button-container {\"uniqueId\":\"6d8495a3\",\"isDynamic\":true,\"blockVersion\":2} -->\r\n<!-- wp:generateblocks\/button {\"uniqueId\":\"3d442e11\",\"hasUrl\":true,\"target\":true,\"backgroundColor\":\"#0366d6\",\"textColor\":\"#ffffff\",\"backgroundColorHover\":\"#222222\",\"textColorHover\":\"#ffffff\",\"paddingTop\":\"15\",\"paddingRight\":\"20\",\"paddingBottom\":\"15\",\"paddingLeft\":\"20\"} -->\r\n<a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"mailto:commercial@zecovalve.com\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>GET VALVE SEAT RINGS PRICE<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nFor the butterfly valve, the seat material usually are rubbers, such as EPDM, NBR, NR (Natural hard rubber)\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nFor the ball valve and plug valve the seat material usually is plastics, such as PTFE, PEEK, and so on.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nFor the globe valve and gate valve the seat material usually is metal to metal.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nFor valves using soft seat material, their shut-off performance is great and even can reach zero bubble seat tightness. while the disadvantaged part is they can not resist high temperature and high-pressure applications.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nOn the other hand, those valve's seat material is metal to metal therefore they can stand with high-pressure ratings up to 2500LB.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-types-of-seat-rings\">Types of Seat Rings<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Soft Seat (Nonmetallic Seat Ring)<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe majority of valves have soft seat inserts and elastomer or polymer seals. The nonmetallic seat ring is made from e.g. Teflon. The ring is held against the ball by an insert. For fire-safe service, a secondary metal-to-metal seating arrangement is required to omit leakage in the event that the soft seat material is lost during a fire. Soft seated valves are recommended for clean service only and are unsuitable for dirty\/abrasive service or high temperatures.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Double Beveled Sealing Ring<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe structure design of a double-beveled sealing ring has been adopted to reduce the friction between the ball and the sealing ring to achieve lower operating torque. When the medium pressure is low, the ball has a smaller contacting surface with a sealing ring, which introduces higher sealing pressure to ensure the sealing reliability. When the medium pressure gets higher, the contacting area between the ball and the sealing ring increases accordingly. A larger contact area reduces the sealing pressure to avoid the deformation of the sealing ring.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Cantilevered lips seat rings<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nSeat rings with cantilevered lips are designed so that the ball contacts initially only the tip of the lip. As the upstream and downstream seats are pre-stressed on an assembly against the ball, the lips de\ufb02ect and put the seat rings into a torsion. When the valve is being closed against the line pressure, the lip of the downstream seat de\ufb02ects still further until \ufb01nally the entire seat surface matches the ball. By this design, the seats have some spring action that promotes good sealing action also at low \ufb02uid pressures. Furthermore, the resilient construction keeps the seats from being crushed at high \ufb02uid loads\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Pressure equalizing slots<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe seat ring shown is provided with peripheral slots, which are known as pressure-equalizing slots. During the closing of the valve, the maximum surge pressure occurs, during which the downstream seat can be forced to intrude into the ball port and the valve can become inoperative. The pressure equalizing slots prevents this potential failure. When pressure causes the upstream seat to move against the ball and the ball moves downstream, the pressure simply leaks into the valve body cavity through the relief slots. The upstream seat ring becomes pressure balanced. Downstream sealing prevents seat damage and lowers operating torque while providing full bidirectional capability. The seats with pressure equalizing slots also permit the valve to operate at a higher pressure differential with lower torques than double sealing valves in which there is sealing between both seats and the ball.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Soft Seat (Metallic Seat Ring)<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe metallic seat ring, containing a nonmetallic insert, usually requires spring force to achieve a tight seal. Due to springs, this design is not used in corrosive service. Even though this seat has a metal seat ring, it is categorized as a soft seated ball valve due to its use of soft material insert, which is in contact with the ball.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Metal to Metal Seats<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nFor services unsuitable for soft seating, metal and ceramic seating are being used. In general practice, hard metal seated ball valves (typically stellite) are only used in severe service conditions such as high temperature, high erosion, corrosion or abrasion, slurry, etc. Metal seats are generally not bubble tight. Metal seats and balls are typically lapped in matching sets resulting in perfect roundness and fitness to ensure smooth operation and tight shut-off and achieving \u2018Zero Leakage\u2019. Metal seats come in different classes of Shut Off including Class IV, V, and VI. Metal Seat and Ball are fabricated from base metals coated with hard chrome, tungsten carbide, and Stellite.\r\n\r\n<!-- \/wp:paragraph -->","parent":0,"count":5,"filter":"raw"}],"taxonomy_info":{"category":[{"value":1,"label":"Uncategorized"}],"post_tag":[{"value":3236,"label":"butterfly valve seat material"},{"value":1998,"label":"PCTFE Valve Seat Manufacturer"},{"value":3234,"label":"valve seat material compatibility chart"},{"value":3235,"label":"Valve Seat Rings"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Valve Seat Material Compatibility Chart - Valve Seat Rings | ZECO Valve<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zecovalve.com\/tr\/what-is-valve-seat-and-seat-rings-how-many-different-materials-do-they-have-zeco-valve-industrial-valve-manufacturer.html\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Valve Seat Material Compatibility Chart - Valve Seat Rings | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"What is Valve Seat? 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