{"id":5714,"date":"2021-03-06T00:47:13","date_gmt":"2021-03-06T00:47:13","guid":{"rendered":"https:\/\/www.stvvalves.com\/?p=5714"},"modified":"2021-03-06T12:21:52","modified_gmt":"2021-03-06T12:21:52","slug":"what-is-a-butterfly-valve","status":"publish","type":"post","link":"https:\/\/www.stvvalves.com\/it\/what-is-a-butterfly-valve\/","title":{"rendered":"Cos&#039;\u00e8 una valvola a farfalla?"},"content":{"rendered":"<p>La valvola a farfalla \u00e8 un dispositivo di regolazione e intercettazione che pu\u00f2 rappresentare, in alcune applicazioni, un&#039;alternativa <a href=\"https:\/\/www.stvvalves.com\/it\/wholesale\/globe-valve\/\">valvola a globo<\/a> E<a href=\"https:\/\/www.stvvalves.com\/it\/wholesale\/ball-valve\/\"> valvole a sfera<\/a>.<\/p>\n<p>Questo tipo di valvola pu\u00f2 essere classificata in base a molteplici parametri:<\/p>\n<p>design: centrico, doppio eccentrico, triplo eccentrico<br \/>\ntipo di connessione finale: wafer, capocorda (semi o pieno), flangiato e doppio flangiato<br \/>\nmateriale seduta: morbida (esempio: Teflon, Buna, gomma, ecc) o metallo su metallo (SS304, SS316)<br \/>\nmateriali del corpo e del disco (dalla ghisa alle leghe ad alto contenuto di nichel)<br \/>\nazionamento: manuale (leva, ingranaggio, ingranaggio a vite senza fine) e attuato (tipo elettrico, pneumatico, idraulico e gas su olio)<\/p>\n<p>Una valvola a farfalla viene utilizzata per intercettare o modulare il flusso di un fluido (isolamento e regolazione). API 609 centrato <a href=\"https:\/\/www.youtube.com\/watch?v=0tnFqy-lOaM\" target=\"_blank\" rel=\"noopener\">valvole a farfalla<\/a> (sede morbida) sono preferite alle valvole a saracinesca e a sfera per applicazioni a bassa pressione e non critiche poich\u00e9 sono pi\u00f9 economiche, leggere e facili da installare. Le valvole a farfalla eccentriche (valvole a doppio e triplo offset) con sedi metalliche sono diventate sempre pi\u00f9 popolari e competono con le valvole a globo e a sfera per alcune applicazioni.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-5719\" src=\"https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/03\/lug-type-butterfly-valve-500x500-1.jpg\" alt=\"\" width=\"500\" height=\"500\" srcset=\"https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/03\/lug-type-butterfly-valve-500x500-1.jpg 500w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/03\/lug-type-butterfly-valve-500x500-1-300x300.jpg 300w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/03\/lug-type-butterfly-valve-500x500-1-100x100.jpg 100w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/03\/lug-type-butterfly-valve-500x500-1-80x80.jpg 80w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/03\/lug-type-butterfly-valve-500x500-1-36x36.jpg 36w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/03\/lug-type-butterfly-valve-500x500-1-180x180.jpg 180w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>A butterfly valve is a regulating and shut-off device that can be an alternative, in some applications, with globe valve and ball valves. This type of valve may be classified base on multiple parameters: design: centric, double eccentric, triple eccentric end connection type: wafer, lug (semi or full), flanged and double flanged seat material: soft [&hellip;]<\/p>\n","protected":false},"author":290641,"featured_media":5717,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[1446,1449,1447,1448,1450],"class_list":["post-5714","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news","tag-butterfly-valve-working","tag-design-materials-for-butterfly-valves","tag-principle-butterfly-valve","tag-specification-butterfly-valve","tag-what-is-a-butterfly-valve"],"_links":{"self":[{"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/posts\/5714","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/users\/290641"}],"replies":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/comments?post=5714"}],"version-history":[{"count":5,"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/posts\/5714\/revisions"}],"predecessor-version":[{"id":5722,"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/posts\/5714\/revisions\/5722"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/media\/5717"}],"wp:attachment":[{"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/media?parent=5714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/categories?post=5714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/tags?post=5714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}