{"id":2491,"date":"2026-06-19T10:20:00","date_gmt":"2026-06-19T10:20:00","guid":{"rendered":"https:\/\/www.tgvalve.com\/?p=2491"},"modified":"2026-07-07T07:27:43","modified_gmt":"2026-07-07T07:27:43","slug":"butterfly-valve-cv-flow-coefficient-sizing","status":"publish","type":"post","link":"https:\/\/www.tgvalve.com\/tr\/blog\/butterfly-valve\/butterfly-valve-cv-flow-coefficient-sizing\/","title":{"rendered":"Kelebek Vana Cv ve Ak\u0131\u015f Katsay\u0131s\u0131: Ak\u0131\u015f Kapasitesine G\u00f6re Boyutland\u0131rma Nas\u0131l Yap\u0131l\u0131r?"},"content":{"rendered":"

\u00d6l\u00e7\u00fc al\u0131rken kelebek vana CV'leri <\/strong>Kapasiteyi belirlemek i\u00e7in, sisteminiz i\u00e7in belirtilen form\u00fcl\u00fc kullanarak gerekli Cv de\u011ferini hesaplamal\u0131s\u0131n\u0131z. Ak\u0131\u015f katsay\u0131s\u0131 veya Cv de\u011feri, bir vanan\u0131n belirli bir bas\u0131n\u00e7 d\u00fc\u015f\u00fc\u015f\u00fcnde ne kadar s\u0131v\u0131 ge\u00e7irebilece\u011fini g\u00f6sterir. <\/p>\n\n\n\n

Bir\u00e7ok kelebek vana boyutland\u0131rma tablosunda, vana 90\u00b0 a\u00e7\u0131k konuma yakla\u015ft\u0131k\u00e7a Cv de\u011feri h\u0131zla y\u00fckselir. Bu nedenle, son a\u00e7\u0131lma pozisyonu \u00e7ok \u00f6nemlidir. De\u011ferlerin yanl\u0131\u015f olmas\u0131, sisteminizi t\u0131kayabilecek yetersiz boyutlu vanalara yol a\u00e7abilir. Ayr\u0131ca kontrol edilemeyen a\u015f\u0131r\u0131 boyutlu vanalara da neden olabilir. <\/p>\n\n\n\n

Bu k\u0131lavuz ak\u0131\u015f katsay\u0131lar\u0131n\u0131 ve \u00fc\u00e7\u00fcn\u00fcn nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 a\u00e7\u0131klamaktad\u0131r. valf \u00f6zellikleri<\/strong>\u2019'E\u011friler performans\u0131 etkiler. Ayr\u0131ca valf boyutunun ve a\u00e7\u0131s\u0131n\u0131n ko\u015fullara uygunlu\u011funu da detayland\u0131r\u0131r.'.<\/p>\n\n\n\n

Cv'yi Anlamak: Ak\u0131\u015f Katsay\u0131s\u0131 A\u00e7\u0131klamas\u0131<\/strong><\/h2>\n\n\n\n

Cv veya ak\u0131\u015f katsay\u0131s\u0131, suyun dakikada akan hacmini ABD galonu cinsinden \u00f6l\u00e7er. Su, tam olarak 1 psi'lik bir bas\u0131n\u00e7 d\u00fc\u015f\u00fc\u015f\u00fcyle bir vanadan akar.<\/p>\n\n\n\n

Standart beden \u00f6l\u00e7\u00fcs\u00fc form\u00fcl\u00fc \u015f\u00f6yledir:<\/p>\n\n\n\n

Cv = Q \u00d7 \u221a(SG \/ \u0394P)<\/strong><\/p>\n\n\n\n

Burada Q, GPM cinsinden ak\u0131\u015f h\u0131z\u0131, SG, s\u0131v\u0131n\u0131n \u00f6zg\u00fcl a\u011f\u0131rl\u0131\u011f\u0131 ve \u0394P, valf \u00fczerindeki bas\u0131n\u00e7 fark\u0131d\u0131r (psi cinsinden).<\/p>\n\n\n\n

daha y\u00fcksek kelebek vana Cv<\/strong> Bu, daha az diren\u00e7 ve daha y\u00fcksek ak\u0131\u015f kapasitesi anlam\u0131na gelir. Kelebek vanalar, \u00e7eyrek d\u00f6n\u00fc\u015fl\u00fc vanalar aras\u0131nda boru \u00e7ap\u0131 ba\u015f\u0131na en y\u00fcksek Cv de\u011ferlerinden birini \u00fcretir. Tamamen a\u00e7\u0131k oldu\u011funda, disk ak\u0131\u015fa neredeyse paralel durur. Bu, minimum engelleme ile net bir yol olu\u015fturur.<\/p>\n\n\n\n

Tersine, k\u00fcresel vanalar<\/a> Ani bir y\u00f6n de\u011fi\u015fikli\u011fiyle s\u0131v\u0131y\u0131 zorla ani bir \u015fekilde hareket ettirir. Bu tasar\u0131m, e\u015fde\u011fer ak\u0131\u015f h\u0131zlar\u0131nda \u00e7ok daha fazla bas\u0131n\u00e7 d\u00fc\u015f\u00fc\u015f\u00fc yarat\u0131r.<\/p>\n\n\n\n

Ak\u0131\u015f karakteristikleri kelebek vana performans\u0131n\u0131 nas\u0131l etkiler?<\/strong><\/h2>\n\n\n\n
\"Kelebek<\/figure>\n\n\n\n

Ak\u0131\u015f \u00f6zellikleri, kelebek vanan\u0131n diskinin kapal\u0131 konumdan tamamen a\u00e7\u0131k konuma ge\u00e7mesiyle olu\u015fan ak\u0131\u015f h\u0131z\u0131 de\u011fi\u015fikliklerini etkiler. Sisteminiz i\u00e7in do\u011fru e\u011friyi se\u00e7mek, karars\u0131zl\u0131\u011f\u0131 ve enerji israf\u0131n\u0131 \u00f6nler.<\/p>\n\n\n\n

Bilinmesi gereken \u00fc\u00e7 temel valf karakteristik e\u011frisi vard\u0131r:<\/p>\n\n\n\n

H\u0131zl\u0131 A\u00e7\u0131lan<\/strong><\/h3>\n\n\n\n

Ak\u0131\u015f\u0131n b\u00fcy\u00fck k\u0131sm\u0131 hareketin ilk 20-30\u00b0'sinde ger\u00e7ekle\u015fir. Bu, basit a\u00e7ma\/kapama izolasyonu i\u00e7in uygundur, ancak hassas ak\u0131\u015f mod\u00fclasyonu i\u00e7in kullan\u0131m\u0131 zordur. K\u00fc\u00e7\u00fck hareketler b\u00fcy\u00fck ak\u0131\u015f de\u011fi\u015fikliklerine neden olur.<\/p>\n\n\n\n

Do\u011frusal<\/strong><\/h3>\n\n\n\n

Ak\u0131\u015f, disk a\u00e7\u0131s\u0131na g\u00f6re sabit bir oranda artar. Bu, pompa tahliye hatlar\u0131 gibi vanadaki bas\u0131n\u00e7 d\u00fc\u015f\u00fc\u015f\u00fcn\u00fcn nispeten sabit kald\u0131\u011f\u0131 sistemlerde en iyi sonucu verir.<\/p>\n\n\n\n

E\u015fit Y\u00fczdeli<\/strong><\/h3>\n\n\n\n

A\u00e7\u0131kl\u0131\u011f\u0131n her bir derecesi, mevcut ak\u0131\u015f h\u0131z\u0131na sabit bir y\u00fczde ekler. Bu, en yayg\u0131n tercih edilen y\u00f6ntemdir. Ak\u0131\u015f kontrol\u00fc i\u00e7in kelebek vana<\/strong><\/a> Is\u0131tma, havaland\u0131rma ve iklimlendirme (HVAC), su ar\u0131tma ve kimyasal dozlama gibi de\u011fi\u015fken bas\u0131n\u00e7l\u0131 sistemlerde.<\/p>\n\n\n\n

Konsantrik veya tek ofset kelebek vanalar normalde h\u0131zl\u0131 a\u00e7\u0131lma ak\u0131\u015f karakteristi\u011fine sahiptir. \u00c7ift veya \u00fc\u00e7l\u00fc eksantrik valfler<\/a> Do\u011frusal veya e\u015fit y\u00fczdesel \u00f6zelliklere sahiptirler. Bu durum, mod\u00fclasyon kontrol uygulamalar\u0131nda eksantrik vanalar\u0131n yayg\u0131n kullan\u0131m\u0131n\u0131 a\u00e7\u0131klamaktad\u0131r.<\/p>\n\n\n\n

Farkl\u0131 vana boyutlar\u0131nda hangi CV de\u011ferlerini beklemelisiniz?<\/strong><\/h2>\n\n\n\n

Cv de\u011feri yakla\u015f\u0131k olarak boru \u00e7ap\u0131n\u0131n karesiyle orant\u0131l\u0131d\u0131r. Dolay\u0131s\u0131yla, 4 in\u00e7ten 8 in\u00e7e \u00e7\u0131kmak, ak\u0131\u015f kapasitesini yakla\u015f\u0131k d\u00f6rt kat\u0131na \u00e7\u0131kar\u0131r.<\/p>\n\n\n\n

Nominal boyuta g\u00f6re tipik tam a\u00e7\u0131k Cv aral\u0131klar\u0131:<\/p>\n\n\n\n