{"id":6229,"date":"2021-07-07T12:51:44","date_gmt":"2021-07-07T04:51:44","guid":{"rendered":"https:\/\/www.stvvalves.com\/?p=6229"},"modified":"2021-07-07T12:53:15","modified_gmt":"2021-07-07T04:53:15","slug":"rising-stem-gate-valve-vs-non-rising-stem-gate-valve","status":"publish","type":"post","link":"https:\/\/www.stvvalves.com\/ro\/rising-stem-gate-valve-vs-non-rising-stem-gate-valve\/","title":{"rendered":"Supap\u0103 cu gur\u0103 cu tij\u0103 care se ridic\u0103 VS Supap\u0103 cu gur\u0103 cu tij\u0103 care nu se ridic\u0103"},"content":{"rendered":"<section class=\"av_textblock_section\" ><div class='avia_textblock'  ><p><b>Supape cu poart\u0103 cu tij\u0103 \u00een cre\u0219tere<\/b>\u00a0sunt de obicei realizate din o\u021bel turnat sau forjat \u00een timp ce\u00a0<b>robinete cu tij\u0103 care nu se ridic\u0103<\/b>\u00a0sunt mai tipic alam\u0103, bronz sau font\u0103.\u00a0<b>Supape cu tij\u0103 care nu se ridic\u0103<\/b>\u00a0ocupa mai putin spatiu si\u00a0<b>supape cu tij\u0103 \u00een cre\u0219tere<\/b>\u00a0necesit\u0103 mai mult spa\u021biu. \u2026 Dac\u0103 multe\u00a0<b>de tulpin\u0103 este<\/b>\u00a0expus, cel\u00a0<b>supapa este<\/b> deschis.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-6230\" src=\"https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/07\/rising-stem-gate-valve-vs-non-rising-stem-gate-valve.jpg\" alt=\"\" width=\"860\" height=\"461\" srcset=\"https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/07\/rising-stem-gate-valve-vs-non-rising-stem-gate-valve.jpg 860w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/07\/rising-stem-gate-valve-vs-non-rising-stem-gate-valve-600x322.jpg 600w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/07\/rising-stem-gate-valve-vs-non-rising-stem-gate-valve-300x161.jpg 300w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/07\/rising-stem-gate-valve-vs-non-rising-stem-gate-valve-768x412.jpg 768w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2021\/07\/rising-stem-gate-valve-vs-non-rising-stem-gate-valve-705x378.jpg 705w\" sizes=\"auto, (max-width: 860px) 100vw, 860px\" \/><\/p>\n<p>\u00cen func\u021bie de structura tijei supapei, supapa cu poart\u0103 poate fi \u00eemp\u0103r\u021bit\u0103 \u00een:<\/p>\n<p>1. Supap\u0103 cu poart\u0103 cu tij\u0103 \u00een cre\u0219tere: piuli\u021ba tijei se afl\u0103 pe capacul sau suportul supapei. La deschiderea \u0219i \u00eenchiderea por\u021bii, piuli\u021ba tijei este rotit\u0103 pentru a realiza ridicarea \u0219i cobor\u00e2rea tijei. Acest tip de structur\u0103 este avantajos pentru lubrifierea tijei supapei, iar gradul de deschidere \u0219i \u00eenchidere este evident, deci este utilizat pe scar\u0103 larg\u0103.<\/p>\n<p>2. Supap\u0103 cu tij\u0103 care nu se ridic\u0103: piuli\u021ba tijei se afl\u0103 \u00een corpul supapei, care este \u00een contact direct cu mediul. La deschiderea si inchiderea portii, aceasta se realizeaza prin rotirea tijei supapei. Avantajele acestei structuri sunt: \u00een\u0103l\u021bimea robinetului r\u0103m\u00e2ne \u00eentotdeauna neschimbat\u0103, astfel \u00eenc\u00e2t spa\u021biul de instalare este mic. Este potrivit pentru robinete cu gur\u0103 cu diametru mare sau spa\u021biu de instalare limitat. Acest tip de structur\u0103 ar trebui s\u0103 fie echipat cu indicator de deschidere \u0219i \u00eenchidere pentru a indica gradul de deschidere \u0219i \u00eenchidere. Dezavantajul acestei structuri este: firul tijei nu numai c\u0103 nu poate fi lubrifiat, ci \u0219i supus direct la eroziune medie, u\u0219or de deteriorat.<\/p>\n<p>Principalele diferen\u021be dintre supapa cu tij\u0103 \u00een sus \u0219i robineta cu tij\u0103 f\u0103r\u0103 ridicare:<\/p>\n<p>1. \u0218urubul de ridicare al robinetului cu flan\u0219\u0103 cu tij\u0103 care nu se ridic\u0103 se rote\u0219te numai f\u0103r\u0103 mi\u0219care \u00een sus \u0219i \u00een jos. Cel expus este doar o tij\u0103, iar piuli\u021ba ei este fixat\u0103 pe poart\u0103. Poarta este ridicat\u0103 prin rotirea \u0219urubului \u0219i nu exist\u0103 un portal vizibil; \u0218urubul de ridicare al supapei cu flan\u0219\u0103 a tijei \u00een sus este expus, iar piuli\u021ba este aproape de roata de m\u00e2n\u0103 \u0219i fix\u0103 (nu se rote\u0219te sau nu se mi\u0219c\u0103 axial). Berbecul este ridicat prin rotirea \u0219urubului. \u0218urubul \u0219i berbecul se rotesc doar unul fa\u021b\u0103 de cel\u0103lalt f\u0103r\u0103 deplasare axial\u0103 relativ\u0103, iar aspectul este un suport \u00een form\u0103 de u\u0219\u0103.<\/p>\n<p>2. \u0218urubul de plumb nu poate fi v\u0103zut \u00een supapa care nu se ridic\u0103, dar poate fi v\u0103zut \u00een supapa de cre\u0219tere.<\/p>\n<p>3. Atunci c\u00e2nd supapa tij\u0103 f\u0103r\u0103 ridicare este deschis\u0103 \u0219i \u00eenchis\u0103, volanul \u0219i tija supapei sunt conectate \u00eempreun\u0103 \u0219i relativ imobile. Acesta conduce discul supapei \u00een sus \u0219i \u00een jos prin rotirea tijei supapei \u00eentr-un punct fix pentru a finaliza deschiderea \u0219i \u00eenchiderea. Supapa de ridicare a tijei este prin tija \u0219i transmisia filetului volanului pentru a ridica sau a cobor\u00ee discul. Ideea simpl\u0103 este c\u0103 supapa tijei care se ridic\u0103 este c\u0103 discul se mi\u0219c\u0103 \u00een sus \u0219i \u00een jos \u00eempreun\u0103 cu tija, iar volanul este \u00eentotdeauna \u00een punctul fix.<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":290641,"featured_media":6230,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[1481,1482,1480],"class_list":["post-6229","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news","tag-non-rising-stem-gate-valve","tag-rising-stem-gate-valve","tag-rising-stem-gate-valve-vs-non-rising-stem-gate-valve"],"_links":{"self":[{"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/posts\/6229","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/users\/290641"}],"replies":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/comments?post=6229"}],"version-history":[{"count":2,"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/posts\/6229\/revisions"}],"predecessor-version":[{"id":6232,"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/posts\/6229\/revisions\/6232"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/media\/6230"}],"wp:attachment":[{"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/media?parent=6229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/categories?post=6229"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/tags?post=6229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}