{"id":2745,"date":"2026-07-13T08:08:06","date_gmt":"2026-07-13T08:08:06","guid":{"rendered":"https:\/\/www.tgvalve.com\/?p=2745"},"modified":"2026-07-29T15:31:07","modified_gmt":"2026-07-29T15:31:07","slug":"check-valve-backflow-prevention","status":"publish","type":"post","link":"https:\/\/www.tgvalve.com\/tr\/blog\/check-valve\/check-valve-backflow-prevention\/","title":{"rendered":"Geri Ak\u0131\u015f Valfinin Sebepleri ve \u00d6nlenmesi Nelerdir?"},"content":{"rendered":"

Geri ak\u0131\u015f, normalde \u00f6nlenmesi gereken bir geri ak\u0131\u015f valfinden s\u0131v\u0131n\u0131n y\u00f6n de\u011fi\u015ftirmesi sonucu olu\u015fur. Uygulama i\u00e7in yanl\u0131\u015f valf tipi, a\u015f\u0131nm\u0131\u015f yuva veya disk, yanl\u0131\u015f boyutland\u0131rma gibi nedenlerden herhangi biri geri ak\u0131\u015fa yol a\u00e7abilir. Pompa tahliye hatlar\u0131nda, kazan besleme suyu sistemlerinde ve kimyasal enjeksiyon devrelerinde geri ak\u0131\u015f sadece verimlilik sorunu de\u011fil, ayn\u0131 zamanda bir g\u00fcvenlik ve ekipman hasar\u0131 olay\u0131d\u0131r. Geri ak\u0131\u015fa neyin neden oldu\u011funu anlamak, onu \u00f6nlemenin ba\u015flang\u0131\u00e7 noktas\u0131d\u0131r.<\/p>\n\n\n\n

Geri Ak\u0131\u015f Nedir ve Neden \u00d6nemlidir?<\/h2>\n\n\n\n

Geri ak\u0131\u015f, ak\u0131\u015f\u0131n yaln\u0131zca tek y\u00f6nde ger\u00e7ekle\u015fmesi gereken bir vana veya boru b\u00f6l\u00fcm\u00fcnden ters y\u00f6nde ak\u0131\u015f olmas\u0131d\u0131r. Bir \u00e7ek valf uygulamas\u0131nda, valf kapal\u0131 olmas\u0131 gerekirken s\u0131v\u0131n\u0131n valf diski veya yuvas\u0131ndan geriye do\u011fru hareket etmesi anlam\u0131na gelir.<\/p>\n\n\n\n

Sonu\u00e7lar sisteme ba\u011fl\u0131d\u0131r. Pompa tahliye hatt\u0131nda, geri ak\u0131\u015f pompa \u00e7ark\u0131n\u0131n ters y\u00f6nde d\u00f6nmesine neden olarak yataklara ve mekanik contalara zarar verir. Kazan besleme suyu sisteminde, geri ak\u0131\u015f buhar\u0131n veya s\u0131cak suyun besleme suyu pompas\u0131na geri d\u00f6nmesine izin vererek su darbesine ve termal \u015foka neden olur. Kimyasal enjeksiyon sistemlerinde, geri ak\u0131\u015f proses s\u0131v\u0131s\u0131n\u0131n dozaj pompas\u0131n\u0131 ve kimyasal besleme hatt\u0131n\u0131 kirletmesine neden olur. Ters ak\u0131\u015f\u0131n sonu\u00e7lar\u0131 sistem bas\u0131nc\u0131, s\u0131cakl\u0131\u011f\u0131 ve s\u0131v\u0131 tehlike seviyesiyle do\u011fru orant\u0131l\u0131d\u0131r.<\/p>\n\n\n\n

Burada \u00e7ek valf ile geri d\u00f6n\u00fc\u015fs\u00fcz valf aras\u0131ndaki fark\u0131 a\u00e7\u0131kl\u0131\u011fa kavu\u015fturmakta fayda var. Geri d\u00f6n\u00fc\u015fs\u00fcz valf daha geni\u015f bir fonksiyonel kategoridir. Ters ak\u0131\u015f\u0131 \u00f6nleyen her cihaz geri d\u00f6n\u00fc\u015fs\u00fcz valf olarak nitelendirilir. \u00c7ek valf ise end\u00fcstriyel boru hatlar\u0131nda bu i\u015flevi yerine getirmek i\u00e7in kullan\u0131lan en yayg\u0131n \u00f6zel tiptir. Uygulamada, m\u00fchendisler her iki terimi de ayn\u0131 anlamda kullan\u0131rlar. Fonksiyonel gereksinim ayn\u0131d\u0131r: ters ak\u0131\u015f\u0131 durdurmak.<\/p>\n\n\n\n

\u00c7ek Valf Geri Ak\u0131\u015f\u0131n\u0131n Yayg\u0131n Nedenleri<\/h2>\n\n\n\n
\"\u00c7ek<\/figure>\n\n\n\n

Geri ak\u0131\u015f valflerinde meydana gelen olaylar\u0131n \u00e7o\u011fu d\u00f6rt temel nedenden birine dayanmaktad\u0131r.<\/p>\n\n\n\n

Uygulama i\u00e7in yanl\u0131\u015f vana tipi kullan\u0131lm\u0131\u015f.<\/strong> Titre\u015fimli ak\u0131\u015f sistemine veya dikey a\u015fa\u011f\u0131 do\u011fru ak\u0131\u015f hatt\u0131na tak\u0131lan bir sal\u0131ncakl\u0131 \u00e7ek valf g\u00fcvenilir bir \u015fekilde kapanmaz. Sal\u0131ncakl\u0131 \u00e7ek valfler kapanmak i\u00e7in yer\u00e7ekimine ve ters ak\u0131\u015f bas\u0131nc\u0131na ba\u011fl\u0131d\u0131r. Ak\u0131\u015f ko\u015fullar\u0131 bir sonraki ileri darbeden \u00f6nce yeterli ters bas\u0131n\u00e7 olu\u015fturmazsa, disk asla tam olarak kapanmaz. Darbeler aras\u0131nda geri ak\u0131\u015f meydana gelir. Titre\u015fimli servis i\u00e7in do\u011fru \u00f6zellik, reaktif olarak de\u011fil proaktif olarak kapanan yayl\u0131 bir \u00e7ek valftir.<\/p>\n\n\n\n

Yetersiz boyutlu vana.<\/strong> Yetersiz boyutland\u0131r\u0131lm\u0131\u015f bir \u00e7ek valf, tasar\u0131m ak\u0131\u015f h\u0131z\u0131ndan daha y\u00fcksek bir h\u0131zda \u00e7al\u0131\u015f\u0131r. Y\u00fcksek h\u0131z, diskin oturma y\u00fczeyine kar\u015f\u0131 k\u0131smen a\u00e7\u0131k kalmas\u0131na neden olur. Disk, s\u0131k\u0131ca oturmak yerine titrer. Bu titreme, \u00e7ek valfte titre\u015fime, h\u0131zland\u0131r\u0131lm\u0131\u015f oturma y\u00fczeyi ve disk a\u015f\u0131nmas\u0131na ve sonunda ters bas\u0131nca kar\u015f\u0131 s\u0131zd\u0131rmazl\u0131k sa\u011flayamayan bir oturma y\u00fczeyine yol a\u00e7ar. A\u015f\u0131r\u0131 ak\u0131\u015f h\u0131z\u0131ndan kaynaklanan disk titre\u015fimi, \u00e7o\u011fu titre\u015fim ar\u0131zas\u0131n\u0131n ard\u0131ndaki mekanik s\u00fcre\u00e7tir.<\/p>\n\n\n\n

A\u015f\u0131nm\u0131\u015f veya hasar g\u00f6rm\u00fc\u015f koltuk ve disk.<\/strong> Valf yuvalar\u0131 ve diskleri, normal \u00e7al\u0131\u015fma d\u00f6ng\u00fcs\u00fc, ak\u0131\u015ftaki par\u00e7ac\u0131klardan kaynaklanan a\u015f\u0131nma veya uyumsuz s\u0131v\u0131 kimyas\u0131ndan kaynaklanan korozyon nedeniyle zamanla a\u015f\u0131n\u0131r. A\u015f\u0131nm\u0131\u015f bir yuva, disk kapal\u0131yken bile s\u0131v\u0131n\u0131n diski atlamas\u0131na izin verir. Hasarl\u0131 bir disk, yuvaya kar\u015f\u0131 tam bir s\u0131zd\u0131rmazl\u0131k sa\u011flayamaz. Her iki durum da, ani bir ar\u0131za gibi g\u00f6r\u00fcnen ancak valfin kullan\u0131m \u00f6mr\u00fc boyunca kademeli olarak geli\u015fen \u00e7ek valf geri ak\u0131\u015f\u0131na neden olur.<\/p>\n\n\n\n

Yanl\u0131\u015f montaj y\u00f6n\u00fc.<\/strong> D\u00f6ner tip \u00e7ek valfler ve kald\u0131rma tipi \u00e7ek valflerin belirli y\u00f6nlendirme gereksinimleri vard\u0131r. Dikey olarak a\u015fa\u011f\u0131 do\u011fru ak\u0131\u015f hatt\u0131na monte edilen bir d\u00f6ner tip \u00e7ek valf, yer\u00e7ekimi diskin kapanmas\u0131na yard\u0131mc\u0131 olmak yerine engel oldu\u011fu i\u00e7in \u00e7al\u0131\u015famaz. Yatay olarak monte edilen bir kald\u0131rma tipi \u00e7ek valfte ise disk, g\u00fcvenilir bir kapanma i\u00e7in yer\u00e7ekimine g\u00f6re yanl\u0131\u015f d\u00fczlemde hareket edebilir.<\/p>\n\n\n\n

Geri Ak\u0131\u015f Ar\u0131zalar\u0131n\u0131 Nas\u0131l \u00d6nleyebiliriz?<\/h2>\n\n\n\n

Kontrol vanas\u0131 titre\u015fimi ve geri ak\u0131\u015f\u0131 yanl\u0131\u015f valf se\u00e7imi<\/a> Bu sorunlar, teknik \u015fartname a\u015famas\u0131nda \u00f6nlenebilir. Do\u011fru yakla\u015f\u0131m, vana tipini se\u00e7meden \u00f6nce ger\u00e7ek ak\u0131\u015f ko\u015fullar\u0131n\u0131 tan\u0131mlamakla ba\u015flar.<\/p>\n\n\n\n

Hat boyunca minimum ve maksimum ak\u0131\u015f h\u0131z\u0131n\u0131 tan\u0131mlay\u0131n. <\/strong>Geri d\u00f6n\u00fc\u015fs\u00fcz vanalar\u0131n diski a\u00e7\u0131k tutmak i\u00e7in minimum bir ileri h\u0131za ve \u00e7arpmadan kapanmas\u0131 i\u00e7in kontroll\u00fc bir yava\u015flamaya ihtiyac\u0131 vard\u0131r. Vana boyutuna g\u00f6re minimum h\u0131z\u0131n alt\u0131nda s\u0131k s\u0131k \u00e7al\u0131\u015fan hatlar, titre\u015fime ve erken conta a\u015f\u0131nmas\u0131na neden olur. Geri d\u00f6n\u00fc\u015fs\u00fcz vana \u00e7al\u0131\u015fmas\u0131 i\u00e7in minimum ak\u0131\u015f h\u0131z\u0131, vana \u00fcreticilerinin her tasar\u0131m ve delik boyutu i\u00e7in sa\u011flad\u0131\u011f\u0131 bir spesifikasyon parametresidir.<\/p>\n\n\n\n

Kurulumdan \u00f6nce y\u00f6nlendirme gereksinimlerini do\u011frulay\u0131n.<\/strong> D\u00f6ner \u00e7ek valfler yatay hatlar i\u00e7in uygundur. Yayl\u0131 tasar\u0131mlar her y\u00f6ne uygundur. E\u011fimli disk tasar\u0131mlar\u0131 y\u00fcksek h\u0131zl\u0131 yatay ve dikey yukar\u0131 ak\u0131\u015f i\u00e7in uygundur. Valf tasar\u0131m\u0131n\u0131 genel uygulama kategorisine de\u011fil, ger\u00e7ek kurulum y\u00f6n\u00fcne g\u00f6re se\u00e7in.<\/p>\n\n\n\n

Proses s\u0131v\u0131s\u0131yla uyumlu malzemeleri belirtin. <\/strong>Disk veya oturma y\u00fczeyindeki s\u0131v\u0131 kimyas\u0131 uyumsuzlu\u011fundan kaynaklanan korozyon, mekanik a\u015f\u0131nmayla ayn\u0131 ar\u0131za moduna neden olur, ancak daha h\u0131zl\u0131 ve daha az tahmin edilebilir \u015fekilde ger\u00e7ekle\u015fir. G\u00f6vde malzemesini, disk malzemesini ve oturma y\u00fczeyi malzemesini, ger\u00e7ek \u00e7al\u0131\u015fma s\u0131cakl\u0131\u011f\u0131ndaki ger\u00e7ek s\u0131v\u0131 kimyas\u0131yla kar\u015f\u0131la\u015ft\u0131r\u0131n.<\/p>\n\n\n\n

Geri ak\u0131\u015f valfi ile ka\u00e7ak valfi aras\u0131ndaki fark nedir?<\/h3>\n\n\n\n

Geri ak\u0131\u015f, kapanmayan veya s\u0131zd\u0131rmazl\u0131k sa\u011flamayan bir \u00e7ek valften ters y\u00f6nde akan s\u0131v\u0131d\u0131r. S\u0131z\u0131nt\u0131 ise, hasar g\u00f6rm\u00fc\u015f veya a\u015f\u0131nm\u0131\u015f bir oturma y\u00fczeyine sahip, nominal olarak kapal\u0131 bir valften daha k\u00fc\u00e7\u00fck bir hacimde s\u0131v\u0131n\u0131n ge\u00e7mesidir. Geri ak\u0131\u015f genellikle \u00f6nemli miktarda ters ak\u0131\u015f\u0131 i\u00e7erir. S\u0131z\u0131nt\u0131 ise daha d\u00fc\u015f\u00fck hacimli bir oturma ar\u0131zas\u0131d\u0131r. Her ikisi de valfin belirtilen \u00f6zelliklere uygun \u00e7al\u0131\u015fmad\u0131\u011f\u0131n\u0131 g\u00f6sterir, ancak farkl\u0131 temel nedenleri ve farkl\u0131 onar\u0131m sonu\u00e7lar\u0131 vard\u0131r.<\/p>\n\n\n\n

De\u011fi\u015ftirme mi, Onar\u0131m m\u0131?<\/h2>\n\n\n\n

Her \u00e7ek valf geri ak\u0131\u015f olay\u0131 valf de\u011fi\u015fimini gerektirmez. Karar, ar\u0131zaya neyin sebep oldu\u011funa ba\u011fl\u0131d\u0131r.<\/p>\n\n\n\n

Normal \u00e7al\u0131\u015fma d\u00f6ng\u00fcs\u00fcnden veya k\u00fc\u00e7\u00fck \u00e7apl\u0131 a\u015f\u0131nmadan kaynaklanan oturma yeri ve disk a\u015f\u0131nmas\u0131, bazen oturma geometrisini eski haline getirmek i\u00e7in oturma yeri ve disk y\u00fczeylerinin ta\u015flanmas\u0131yla giderilebilir. Bu, yedek par\u00e7a maliyetinin \u00f6nemli oldu\u011fu ve a\u015f\u0131nman\u0131n boyutsal de\u011fil y\u00fczeysel oldu\u011fu daha b\u00fcy\u00fck valflerde pratiktir.<\/p>\n\n\n\n

Disk veya yuvan\u0131n korozyon hasar\u0131, \u00e7atlamas\u0131 veya boyut bozulmas\u0131, par\u00e7a de\u011fi\u015fimini gerektirir. Korozyona u\u011fram\u0131\u015f veya \u00e7atlam\u0131\u015f bir yuva y\u00fczeyini z\u0131mparalamaya \u00e7al\u0131\u015fmak, ge\u00e7ici olarak iyile\u015ftirilmi\u015f bir s\u0131zd\u0131rmazl\u0131k sa\u011flar, ancak bu s\u0131zd\u0131rmazl\u0131k k\u0131sa s\u00fcrede tekrar bozulur. Etkilenen par\u00e7alar\u0131, kullan\u0131m amac\u0131na uygun olarak belirtilen malzemelerle de\u011fi\u015ftirin.<\/p>\n\n\n\n

Yanl\u0131\u015f vana tipi, bir tasar\u0131m d\u00fczeltmesidir, bak\u0131m i\u015fi de\u011fildir. E\u011fer \u00e7ek valf titremesi, vanan\u0131n yetersiz boyutland\u0131r\u0131lmas\u0131ndan veya ak\u0131\u015f ko\u015fullar\u0131 i\u00e7in yanl\u0131\u015f belirtilmesinden kaynaklan\u0131yorsa, valf yuvas\u0131n\u0131n ta\u015flanmas\u0131 hi\u00e7bir \u015feyi de\u011fi\u015ftirmez. Vana, ger\u00e7ek \u00e7al\u0131\u015fma ko\u015fullar\u0131na uygun do\u011fru tip ve boyutta bir vana ile de\u011fi\u015ftirilmelidir.<\/p>\n\n\n\n

CTGV'nin \u00fcr\u00fcn yelpazesi i\u00e7in sal\u0131n\u0131ml\u0131 \u00e7ek valfler<\/a> Ve kald\u0131rma \u00e7ek valfleri<\/a> API 6D, API 594 ve ASME B16.34 standartlar\u0131na uygun olarak, 150 ile 4500 aras\u0131ndaki bas\u0131n\u00e7 s\u0131n\u0131flar\u0131nda \u00fcretilmi\u015ftir., malzeme se\u00e7imi<\/a> Korozyona dayan\u0131kl\u0131 ve y\u00fcksek s\u0131cakl\u0131k uygulamalar\u0131 i\u00e7in karbon \u00e7eli\u011fi, 316 paslanmaz \u00e7elik ve tam ala\u015f\u0131m yelpazesini kapsar. \u00c7ek valf ve geri d\u00f6n\u00fc\u015fs\u00fcz valf terminolojisini anlamak ve belirli uygulama i\u00e7in do\u011fru valf tipini se\u00e7mek, CTGV'nin m\u00fchendislik deste\u011finin de\u011fer katt\u0131\u011f\u0131 noktad\u0131r. \u0130leti\u015fime ge\u00e7in ve 2 saat i\u00e7inde teknik bir \u00f6neri al\u0131n.<\/p>\n\n\n\n

S\u0131k\u00e7a Sorulan Sorular<\/h2>\n\n\n\n

Geri ak\u0131\u015f valfinin neden geri tepmesi meydana gelir?<\/h3>\n\n\n\n

Uygulama i\u00e7in yanl\u0131\u015f vana tipi, yetersiz boyutland\u0131r\u0131lm\u0131\u015f vanan\u0131n diskte titre\u015fime neden olmas\u0131, a\u015f\u0131nm\u0131\u015f veya hasar g\u00f6rm\u00fc\u015f oturma y\u00fczeyi ve disk y\u00fczeyleri veya yanl\u0131\u015f montaj y\u00f6n\u00fc. Her bir neden, normalde \u00f6nlenmesi gereken bir vanadan ters ak\u0131\u015fa neden olur ve farkl\u0131 onar\u0131m ve de\u011fi\u015ftirme sonu\u00e7lar\u0131 do\u011furur.<\/p>\n\n\n\n

\u00c7ek valf titre\u015fimi nedir?<\/h3>\n\n\n\n

Ak\u0131\u015f h\u0131z\u0131n\u0131n, diski tamamen a\u00e7\u0131k tutmak i\u00e7in gereken minimum h\u0131z\u0131n alt\u0131nda olmas\u0131 nedeniyle \u00e7ek valf diskinin h\u0131zl\u0131 a\u00e7\u0131l\u0131p kapanmas\u0131. Titre\u015fim, h\u0131zlanm\u0131\u015f yuva ve disk a\u015f\u0131nmas\u0131na, g\u00fcr\u00fclt\u00fcye ve sonunda ak\u0131\u015f ko\u015fullar\u0131 iyile\u015fti\u011finde bile geri ak\u0131\u015fa izin veren yuva y\u00fczeyinde hasara neden olur.<\/p>\n\n\n\n

\u00c7ek valf ile geri d\u00f6n\u00fc\u015fs\u00fcz valf aras\u0131ndaki fark nedir?<\/h3>\n\n\n\n

Her iki terim de ters ak\u0131\u015f\u0131 \u00f6nleyen vanalar\u0131 tan\u0131mlar. Geri d\u00f6n\u00fc\u015fs\u00fcz vana, geri ak\u0131\u015f\u0131 durduran herhangi bir cihaz\u0131 kapsayan daha geni\u015f bir fonksiyonel kategoridir. \u00c7ek valf ise end\u00fcstriyel boru hatlar\u0131nda kullan\u0131lan en yayg\u0131n \u00f6zel tiptir. M\u00fchendisler \u00e7o\u011fu uygulamada her iki terimi de birbirinin yerine kullan\u0131rlar.<\/p>\n\n\n\n

Geri ak\u0131\u015f vanas\u0131n\u0131n s\u0131zd\u0131r\u0131p s\u0131zd\u0131rmad\u0131\u011f\u0131n\u0131 veya geri ak\u0131\u015fa neden olup olmad\u0131\u011f\u0131n\u0131 nas\u0131l anlar\u0131m?<\/h3>\n\n\n\n

S\u0131z\u0131nt\u0131, nominal olarak kapal\u0131 bir vanadan d\u00fc\u015f\u00fck hacimli bir s\u0131z\u0131nt\u0131n\u0131n meydana gelmesidir. Geri ak\u0131\u015f ise, kapanmayan veya s\u0131zd\u0131rmazl\u0131k sa\u011flamayan bir vanadan \u00f6nemli miktarda ters y\u00f6nde ak\u0131\u015f olmas\u0131d\u0131r. Belirtiler farkl\u0131d\u0131r: s\u0131z\u0131nt\u0131, a\u015fa\u011f\u0131 y\u00f6nde yava\u015f bas\u0131n\u00e7 kayb\u0131 olarak kendini g\u00f6sterirken, geri ak\u0131\u015f ters pompa d\u00f6n\u00fc\u015f\u00fc veya yukar\u0131 y\u00f6nde kirlenme olarak kendini g\u00f6sterir.<\/p>\n\n\n\n

\n
\u00dccretsiz Teklif Al\u0131n<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Check valve backflow happens when fluid reverses direction through a check valve that should have prevented it. Wrong valve type for the application. Worn seat or [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":2746,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[],"class_list":["post-2745","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-check-valve"],"_links":{"self":[{"href":"https:\/\/www.tgvalve.com\/tr\/wp-json\/wp\/v2\/posts\/2745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tgvalve.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tgvalve.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tgvalve.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tgvalve.com\/tr\/wp-json\/wp\/v2\/comments?post=2745"}],"version-history":[{"count":1,"href":"https:\/\/www.tgvalve.com\/tr\/wp-json\/wp\/v2\/posts\/2745\/revisions"}],"predecessor-version":[{"id":2748,"href":"https:\/\/www.tgvalve.com\/tr\/wp-json\/wp\/v2\/posts\/2745\/revisions\/2748"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.tgvalve.com\/tr\/wp-json\/wp\/v2\/media\/2746"}],"wp:attachment":[{"href":"https:\/\/www.tgvalve.com\/tr\/wp-json\/wp\/v2\/media?parent=2745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tgvalve.com\/tr\/wp-json\/wp\/v2\/categories?post=2745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tgvalve.com\/tr\/wp-json\/wp\/v2\/tags?post=2745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}