{"id":5708,"date":"2021-03-05T07:44:25","date_gmt":"2021-03-05T07:44:25","guid":{"rendered":"https:\/\/www.stvvalves.com\/?p=5708"},"modified":"2021-03-05T12:45:42","modified_gmt":"2021-03-05T12:45:42","slug":"what-is-the-api-598-leak-testing-of-valves","status":"publish","type":"post","link":"https:\/\/www.stvvalves.com\/ro\/what-is-the-api-598-leak-testing-of-valves\/","title":{"rendered":"Ce este API 598 Testarea de scurgeri a supapelor"},"content":{"rendered":"<p>API este American Petroleum Institute<\/p>\n<p>Standardul API 598: Inspec\u021bie \u0219i testare a supapelor, acoper\u0103 cerin\u021bele de testare \u0219i inspec\u021bie pentru supapele cu poart\u0103, glob, verificare, cu bil\u0103, dopuri \u0219i fluture. Are rate de scurgere acceptabile pentru testarea lichidelor \u0219i gazelor. Toate supapele construite conform diferitelor standarde API trebuie s\u0103 \u00eendeplineasc\u0103 criteriile de scurgere API-598 \u00eenainte de a fi expediate de la produc\u0103tor sau furnizor.<\/p>\n<p>API 598 prevede pentru testele carcasei \u0219i BACK SEAT, nu sunt permise scurgeri vizibile. Dac\u0103 fluidul este lichid, nu trebuie s\u0103 existe semne vizibile de pic\u0103turi sau umezire a suprafe\u021belor exterioare (f\u0103r\u0103 scurgeri vizibile prin corp, c\u0103ptu\u0219eala caroseriei, dac\u0103 exist\u0103, \u0219i articula\u021bia dintre corp \u0219i capot\u0103 \u0219i nicio deteriorare structural\u0103).<\/p>\n<p>\u00cen cazul \u00een care fluidul de testare este aer sau gaz, nu trebuie s\u0103 se eviden\u021bieze scurgeri prin metoda de detectare stabilit\u0103. At\u00e2t pentru testul de \u00eenchidere la presiune joas\u0103, c\u00e2t \u0219i pentru testul de \u00eenchidere la presiune \u00eenalt\u0103, nu sunt permise dovezi vizuale de scurgere prin disc, \u00een spatele inelelor scaunului sau dincolo de etan\u0219\u0103rile arborelui (ale supapelor care au aceast\u0103 caracteristic\u0103) (Deformarea plastic\u0103 a materialelor elastice). scaune \u0219i etan\u0219\u0103ri nu este considerat\u0103 deteriorare structural\u0103). Rata admisibil\u0103 pentru scurgerea fluidului de testare dincolo de scaune, pe durata testelor, este listat\u0103 \u00een urm\u0103torul tabel:<\/p>\n<table class=\"tbl_center\" style=\"height: 482px;\" width=\"602\">\n<tbody>\n<tr>\n<td class=\"fw600\" rowspan=\"2\">Dimensiunea supapei<br \/>\n<span class=\"crred\">NPS<\/span><\/td>\n<td class=\"fw600\" rowspan=\"2\">Toate rezistente<br \/>\nA\u015fezat<br \/>\nSupape<\/td>\n<td class=\"fw600\" colspan=\"2\">Toate supapele cu scaun metalic<br \/>\n(cu excep\u021bia supapelor de re\u021binere)<\/td>\n<\/tr>\n<tr>\n<td class=\"fw600\">Test de lichid<br \/>\n(pic\u0103turi<br \/>\nmin.)<\/td>\n<td class=\"fw600\">Test de gaz<br \/>\n(bule<br \/>\nmin.)<\/td>\n<\/tr>\n<tr>\n<td>&lt; 2<\/td>\n<td>0<\/td>\n<td>0 (1)<\/td>\n<td>0 (1)<\/td>\n<\/tr>\n<tr>\n<td>2 &#8211; 6<\/td>\n<td>0<\/td>\n<td>12<\/td>\n<td>24<\/td>\n<\/tr>\n<tr>\n<td>8 &#8211; 12<\/td>\n<td>0<\/td>\n<td>20<\/td>\n<td>40<\/td>\n<\/tr>\n<tr>\n<td>&gt; 12<\/td>\n<td>0<\/td>\n<td>28<\/td>\n<td>56<\/td>\n<\/tr>\n<tr>\n<td class=\"fw600\" rowspan=\"2\">Dimensiunea supapei<br \/>\n<span class=\"crred\">NPS<\/span><\/td>\n<td class=\"fw600\" rowspan=\"2\">Toate rezistente<br \/>\nA\u015fezat<br \/>\nSupape<\/td>\n<td class=\"fw600\" colspan=\"2\">Asezat metalic<br \/>\nSupape de re\u021binere<\/td>\n<\/tr>\n<tr>\n<td class=\"fw600\">Test de lichid<br \/>\n(pic\u0103turi<br \/>\nmin.)<\/td>\n<td class=\"fw600\">Test de gaz<br \/>\n(bule<br \/>\nmin.)<\/td>\n<\/tr>\n<tr>\n<td>&lt; 2<\/td>\n<td>0<\/td>\n<td>(2)<\/td>\n<td>(3)<\/td>\n<\/tr>\n<tr>\n<td>2 &#8211; 6<\/td>\n<td>0<\/td>\n<td>(2)<\/td>\n<td>(3)<\/td>\n<\/tr>\n<tr>\n<td>8 &#8211; 12<\/td>\n<td>0<\/td>\n<td>(2)<\/td>\n<td>(3)<\/td>\n<\/tr>\n<tr>\n<td>&gt; 12<\/td>\n<td>0<\/td>\n<td>(2)<\/td>\n<td>(3)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Note generale:<\/p>\n<ul>\n<li>1 mililitru este considerat echivalent cu 16 pic\u0103turi.<\/li>\n<li>Pentru supapele de re\u021binere mai mari dec\u00e2t NPS 24, rata de scurgere admis\u0103<br \/>\nva fi conform acordului dintre cump\u0103r\u0103tor \u0219i produc\u0103tor.<\/li>\n<\/ul>\n<p>Note:<\/p>\n<ol>\n<li>Nu trebuie s\u0103 existe scurgeri pentru durata minim\u0103 de \u00eencercare specificat\u0103. Pentru testul cu lichid, 0 pic\u0103tur\u0103 \u00eenseamn\u0103 c\u0103 nu exist\u0103 scurgeri vizibile pe durata minim\u0103 specificat\u0103 a testului. Pentru testul de gaz, 0 bul\u0103 \u00eenseamn\u0103 mai pu\u021bin de 1 bul\u0103 pe durata minim\u0103 specificat\u0103 a testului.<\/li>\n<li>Rata maxim\u0103 de scurgere admis\u0103 va fi de 0,18 inchi cubi (3 centimetri cubi) pe minut pe inch de dimensiunea nominal\u0103 a conductei.<\/li>\n<li>Ratele de scurgere maxime admise trebuie s\u0103 fie de 1,5 picioare cubi standard (0,042 metri cubi) de gaz pe or\u0103 pe inch de dimensiunea nominal\u0103 a conductei.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>API is American Petroleum Institute The API standard 598: Valve Inspection and Testing, covers the testing and inspection requirements for gate, globe, check, ball, plug and butterfly valves. It has acceptable leakage rates for liquid as well as gas testing. All valves built to the various API standards are required to meet API-598 leakage criteria [&hellip;]<\/p>\n","protected":false},"author":290641,"featured_media":5709,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1444,1443],"class_list":["post-5708","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-events","tag-api-598-valve-testing","tag-valve-testing"],"_links":{"self":[{"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/posts\/5708","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=5708"}],"version-history":[{"count":1,"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/posts\/5708\/revisions"}],"predecessor-version":[{"id":5710,"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/posts\/5708\/revisions\/5710"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/media\/5709"}],"wp:attachment":[{"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/media?parent=5708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/categories?post=5708"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stvvalves.com\/ro\/wp-json\/wp\/v2\/tags?post=5708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}