{"id":3047,"date":"2020-12-29T11:16:03","date_gmt":"2020-12-29T10:16:03","guid":{"rendered":"https:\/\/www.znakowo.pl\/blog\/?p=3047"},"modified":"2020-12-29T11:16:06","modified_gmt":"2020-12-29T10:16:06","slug":"hydranty-wewnetrzne-dn-52","status":"publish","type":"post","link":"https:\/\/www.znakowo.pl\/blog\/hydranty-wewnetrzne-dn-52\/","title":{"rendered":"Hydranty wewn\u0119trzne DN 52"},"content":{"rendered":"\n<p>Hydranty wewn\u0119trzne DN 52 z w\u0119\u017cem p\u0142asko sk\u0142adanym stanowi\u0105 jeden z&nbsp;rodzaj\u00f3w punkt\u00f3w poboru wody do cel\u00f3w przeciwpo\u017carowych. Jakie wymagania musz\u0105 spe\u0142nia\u0107?<\/p>\n\n\n<p><!--more--><\/p>\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Spis tre\u015bci<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Prze\u0142\u0105cznik Spisu Tre\u015bci\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.znakowo.pl\/blog\/hydranty-wewnetrzne-dn-52\/#Hydranty_wewnetrzne_%E2%80%93_rozporzadzenie\" >Hydranty wewn\u0119trzne \u2013 rozporz\u0105dzenie<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.znakowo.pl\/blog\/hydranty-wewnetrzne-dn-52\/#Hydranty_33\" >Hydranty 33<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.znakowo.pl\/blog\/hydranty-wewnetrzne-dn-52\/#Przepisy_przeciwpozarowe_%E2%80%93_hydranty_wewnetrzne_DN_52\" >Przepisy przeciwpo\u017carowe \u2013 hydranty wewn\u0119trzne DN 52<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.znakowo.pl\/blog\/hydranty-wewnetrzne-dn-52\/#Hydranty_wewnetrze_DN_52_%E2%80%93_zawory\" >Hydranty wewn\u0119trze DN 52 \u2013 zawory<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.znakowo.pl\/blog\/hydranty-wewnetrzne-dn-52\/#Hydranty_wewnetrzne_%E2%80%93_norma\" >Hydranty wewn\u0119trzne \u2013 norma<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Hydranty_wewnetrzne_%E2%80%93_rozporzadzenie\"><\/span>Hydranty wewn\u0119trzne \u2013 rozporz\u0105dzenie<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Zgodnie z&nbsp;Rozporz\u0105dzeniem Ministra Spraw Wewn\u0119trznych i Administracji w sprawie ochrony przeciwpo\u017carowej budynk\u00f3w, innych obiekt\u00f3w budowlanych i teren\u00f3w hydranty wewn\u0119trzne DN 52 musz\u0105 by\u0107 stosowane:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>W&nbsp;strefie po\u017carowej produkcyjnej i&nbsp;magazynowej o&nbsp;g\u0119sto\u015bci obci\u0105\u017cenia ogniowego przekraczaj\u0105cej 500 MJ\/m<sup>2 <\/sup>i&nbsp;powierzchni przekraczaj\u0105cej 200 m<sup>2<\/sup>.<\/li><li>W strefie po\u017carowej produkcyjnej i magazynowej o g\u0119sto\u015bci obci\u0105\u017cenia ogniowego nieprzekraczaj\u0105cej 500 MJ\/m<sup>2<\/sup>, w kt\u00f3rej znajduje si\u0119 pomieszczenie o powierzchni przekraczaj\u0105cej 100 m<sup>2<\/sup> i g\u0119sto\u015bci obci\u0105\u017cenia ogniowego przekraczaj\u0105cej 1000 MJ\/m<sup>2<\/sup>.<\/li><li>Przy wej\u015bciu do pomieszcze\u0144 magazynowych lub technicznych o&nbsp;powierzchni przekraczaj\u0105cej 200 m<sup>2<\/sup> i g\u0119sto\u015bci obci\u0105\u017cenia ogniowego przekraczaj\u0105cej 500 MJ\/ m<sup>2<\/sup>, usytuowanych w strefie po\u017carowej zakwalifikowanej do kategorii zagro\u017cenia ludzi ZL I, ZL II, ZL III lub ZL IV, znajduj\u0105cej si\u0119 w budynku niskim lub \u015bredniowysokim.<\/li><\/ul>\n\n\n\n<div class=\"product-small-box-content display-flex\">\n          <a href=\"https:\/\/www.znakowo.pl\/produkt\/hydrant-wewnetrzny-znak-bhp,baf002,3596.html\" class=\"product-small\">\n          <div class=\"product-small-box\">\n              <div class=\"product-small-img\">\n                                    <img decoding=\"async\" src=\"https:\/\/tdc.znakowo.pl\/thumbs\/znak-hydrantu-wewnetrznego-4811-3596-160-160-0.jpg\" alt=\"Hydrant wewn\u0119trzny znak bhp - Hydranty wewn\u0119trzne DN 52\" title=\"Hydrant wewn\u0119trzny znak bhp - Hydranty wewn\u0119trzne DN 52\" \/>\n              <\/div>\n              <div class=\"product-small-title\">\n                  Hydrant wewn\u0119trzny znak bhp              <\/div>\n          <\/div>\n      <\/a>    \n            <a href=\"https:\/\/www.znakowo.pl\/produkt\/hydrant-wewnetrzny-przeciwpozarowy-dn-52-pn-en-671-2c-352-15,1g003,4182.html\" class=\"product-small\">\n          <div class=\"product-small-box\">\n              <div class=\"product-small-img\">\n                                    <img decoding=\"async\" src=\"https:\/\/tdc.znakowo.pl\/thumbs\/hydrant-wewnetrzny-przeciwpozarowy-dn-52-pn-en-671-2c-352-15-9872-4182-160-160-0.jpg\" alt=\"Hydrant wewn\u0119trzny przeciwpo\u017carowy DN 52 PN-EN 671-2C-3\/52-15 - Hydranty wewn\u0119trzne DN 52\" title=\"Hydrant wewn\u0119trzny przeciwpo\u017carowy DN 52 PN-EN 671-2C-3\/52-15 - Hydranty wewn\u0119trzne DN 52\" \/>\n              <\/div>\n              <div class=\"product-small-title\">\n                  Hydrant wewn\u0119trzny przeciwpo\u017carowy DN 52 PN-EN 671-2C-3\/52-15              <\/div>\n          <\/div>\n      <\/a>    \n            <a href=\"https:\/\/www.znakowo.pl\/produkt\/hydrant-wewnetrzny-znak-ewakuacyjny-przestrzenny-scienny-3d,bg022,3972.html\" class=\"product-small\">\n          <div class=\"product-small-box\">\n              <div class=\"product-small-img\">\n                                    <img decoding=\"async\" src=\"https:\/\/tdc.znakowo.pl\/thumbs\/hydrant-wewnetrzny-znak-ewakuacyjny-przestrzenny-scienny-3d-6726-3972-160-160-0.jpg\" alt=\"Hydrant wewn\u0119trzny - znak ewakuacyjny, przestrzenny, \u015bcienny 3D - Hydranty wewn\u0119trzne DN 52\" title=\"Hydrant wewn\u0119trzny - znak ewakuacyjny, przestrzenny, \u015bcienny 3D - Hydranty wewn\u0119trzne DN 52\" \/>\n              <\/div>\n              <div class=\"product-small-title\">\n                  Hydrant wewn\u0119trzny - znak ewakuacyjny, przestrzenny, \u015bcienny 3D              <\/div>\n          <\/div>\n      <\/a>    \n        \n    <div class=\"clearfix\"><\/div>    \n<\/div>\n\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Hydranty_33\"><\/span>Hydranty 33<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>W&nbsp;strefie po\u017carowej produkcyjnej i&nbsp;magazynowej o&nbsp;g\u0119sto\u015bci obci\u0105\u017cenia ogniowego przekraczaj\u0105cej 500 MJ\/m<sup>2 <\/sup>i&nbsp;powierzchni przekraczaj\u0105cej 200 m<sup>2<\/sup> i przy wej\u015bciu do pomieszcze\u0144 magazynowych lub technicznych o&nbsp;powierzchni przekraczaj\u0105cej 200 m<sup>2<\/sup> i g\u0119sto\u015bci obci\u0105\u017cenia ogniowego przekraczaj\u0105cej 500 MJ\/ m<sup>2<\/sup>, usytuowanych w strefie po\u017carowej zakwalifikowanej do kategorii zagro\u017cenia ludzi ZL I, ZL II, ZL III lub ZL IV, znajduj\u0105cej si\u0119 w budynku niskim lub \u015bredniowysokim, dopuszcza si\u0119 stosowanie hydrant\u00f3w 33 \u2013 je\u017celi g\u0119sto\u015b\u0107 obci\u0105\u017cenia ogniowego w tych strefach i&nbsp;tych pomieszczeniach magazynowych nie przekracza 1000 MJ\/ m<sup>2<\/sup>.<\/p>\n\n\n\n<div class=\"product-small-box-content display-flex\">\n          <a href=\"https:\/\/www.znakowo.pl\/produkt\/hydrant-wewnetrzny-znak-przeciwpozarowy-ppoz-ba006,ba006,91.html\" class=\"product-small\">\n          <div class=\"product-small-box\">\n              <div class=\"product-small-img\">\n                                    <img decoding=\"async\" src=\"https:\/\/tdc.znakowo.pl\/thumbs\/hydrant-wewnetrzny-znak-przeciwpozarowy-ppoz-ba006-4799-91-160-160-0.jpg\" alt=\"Hydrant wewn\u0119trzny - znak przeciwpo\u017carowy ppo\u017c - BA006 - Hydranty wewn\u0119trzne DN 52\" title=\"Hydrant wewn\u0119trzny - znak przeciwpo\u017carowy ppo\u017c - BA006 - Hydranty wewn\u0119trzne DN 52\" \/>\n              <\/div>\n              <div class=\"product-small-title\">\n                  Hydrant wewn\u0119trzny - znak przeciwpo\u017carowy ppo\u017c - BA006              <\/div>\n          <\/div>\n      <\/a>    \n            <a href=\"https:\/\/www.znakowo.pl\/produkt\/hydrant-wewnetrzny-przeciwpozarowy-dn-33-pn-en-671-1z-3320,1g001,4181.html\" class=\"product-small\">\n          <div class=\"product-small-box\">\n              <div class=\"product-small-img\">\n                                    <img decoding=\"async\" src=\"https:\/\/tdc.znakowo.pl\/thumbs\/hydrant-wewnetrzny-przeciwpozarowy-dn-33-pn-en-671-1z-3320-9870-4181-160-160-0.jpg\" alt=\"Hydrant wewn\u0119trzny przeciwpo\u017carowy DN 33 PN-EN 671-1[Z-33\/20] - Hydranty wewn\u0119trzne DN 52\" title=\"Hydrant wewn\u0119trzny przeciwpo\u017carowy DN 33 PN-EN 671-1[Z-33\/20] - Hydranty wewn\u0119trzne DN 52\" \/>\n              <\/div>\n              <div class=\"product-small-title\">\n                  Hydrant wewn\u0119trzny przeciwpo\u017carowy DN 33 PN-EN 671-1[Z-33\/20]              <\/div>\n          <\/div>\n      <\/a>    \n            <a href=\"https:\/\/www.znakowo.pl\/produkt\/hydrant-wewnetrzny-znak-ewakuacyjny-przestrzenny-scienny-3d,bg021,3971.html\" class=\"product-small\">\n          <div class=\"product-small-box\">\n              <div class=\"product-small-img\">\n                                    <img decoding=\"async\" src=\"https:\/\/tdc.znakowo.pl\/thumbs\/hydrant-wewnetrzny-znak-ewakuacyjny-przestrzenny-scienny-3d-6722-3971-160-160-0.jpg\" alt=\"Hydrant wewn\u0119trzny - znak ewakuacyjny, przestrzenny, \u015bcienny 3D - Hydranty wewn\u0119trzne DN 52\" title=\"Hydrant wewn\u0119trzny - znak ewakuacyjny, przestrzenny, \u015bcienny 3D - Hydranty wewn\u0119trzne DN 52\" \/>\n              <\/div>\n              <div class=\"product-small-title\">\n                  Hydrant wewn\u0119trzny - znak ewakuacyjny, przestrzenny, \u015bcienny 3D              <\/div>\n          <\/div>\n      <\/a>    \n        \n    <div class=\"clearfix\"><\/div>    \n<\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Przepisy_przeciwpozarowe_%E2%80%93_hydranty_wewnetrzne_DN_52\"><\/span>Przepisy przeciwpo\u017carowe \u2013 hydranty wewn\u0119trzne DN 52<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Zasi\u0119g hydrant\u00f3w wewn\u0119trznych w poziomie obejmuje ca\u0142\u0105 powierzchni\u0119 chronionego budynku, strefy po\u017carowej lub pomieszczenia, z uwzgl\u0119dnieniem:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>d\u0142ugo\u015bci odcinka w\u0119\u017ca hydrantu wewn\u0119trznego okre\u015blonej w normach, o kt\u00f3rych mowa w \u00a7 18 ust.2 Rozporz\u0105dzenia;<\/li><li>efektywnego zasi\u0119gu rzutu pr\u0105d\u00f3w ga\u015bniczych:<ul><li>3 m \u2013 w strefach po\u017carowych zakwalifikowanych do kategorii zagro\u017cenia ludzi ZL, znajduj\u0105cych si\u0119 w budynkach o wi\u0119cej ni\u017c jednej kondygnacji nadziemnej \u2013 przyjmowanego dla pr\u0105d\u00f3w rozproszonych sto\u017ckowych;<\/li><\/ul><ul><li>10 m \u2013 w pozosta\u0142ych budynkach.<\/li><\/ul><\/li><\/ul>\n\n\n\n<p>W przypadku pomieszcze\u0144 i stref po\u017carowych produkcyjnych i magazynowych, do zabezpieczenia miejsc, z kt\u00f3rych odleg\u0142o\u015b\u0107 do najbli\u017cszego <a href=\"https:\/\/www.znakowo.pl\/blog\/znaki-ewakuacyjne\/\">wyj\u015bcia ewakuacyjnego<\/a> lub innego wyj\u015bcia na przestrze\u0144 otwart\u0105 przekracza 30 m, w celu spe\u0142nienia wymienionych wy\u017cej wymaga\u0144, dopuszcza si\u0119 wyposa\u017cenie hydrantu 52 w dodatkowy w\u0105\u017c.<\/p>\n\n\n\n<div class=\"product-small-box-content display-flex\">\n          <a href=\"https:\/\/www.znakowo.pl\/produkt\/hydrant-wewnetrzny-przeciwpozarowy-dn-33-pn-en-671-1z-3330,1g002,4192.html\" class=\"product-small\">\n          <div class=\"product-small-box\">\n              <div class=\"product-small-img\">\n                                    <img decoding=\"async\" src=\"https:\/\/tdc.znakowo.pl\/thumbs\/hydrant-wewnetrzny-przeciwpozarowy-dn-33-pn-en-671-1z-3330-9871-4192-160-160-0.jpg\" alt=\"Hydrant wewn\u0119trzny przeciwpo\u017carowy DN 33 PN-EN 671-1[Z-33\/30] - Hydranty wewn\u0119trzne DN 52\" title=\"Hydrant wewn\u0119trzny przeciwpo\u017carowy DN 33 PN-EN 671-1[Z-33\/30] - Hydranty wewn\u0119trzne DN 52\" \/>\n              <\/div>\n              <div class=\"product-small-title\">\n                  Hydrant wewn\u0119trzny przeciwpo\u017carowy DN 33 PN-EN 671-1[Z-33\/30]              <\/div>\n          <\/div>\n      <\/a>    \n            <a href=\"https:\/\/www.znakowo.pl\/produkt\/waz-pozarniczy-strazacki-do-motopomp-w-52-20-metrow-powlekany,1h008,4375.html\" class=\"product-small\">\n          <div class=\"product-small-box\">\n              <div class=\"product-small-img\">\n                                    <img decoding=\"async\" src=\"https:\/\/tdc.znakowo.pl\/thumbs\/waz-pozarniczy-strazacki-do-motopomp-w-52-20-metrow-powlekany-9949-4375-160-160-0.jpg\" alt=\"W\u0105\u017c po\u017carniczy stra\u017cacki do motopomp W 52-20 metr\u00f3w - powlekany - Hydranty wewn\u0119trzne DN 52\" title=\"W\u0105\u017c po\u017carniczy stra\u017cacki do motopomp W 52-20 metr\u00f3w - powlekany - Hydranty wewn\u0119trzne DN 52\" \/>\n              <\/div>\n              <div class=\"product-small-title\">\n                  W\u0105\u017c po\u017carniczy stra\u017cacki do motopomp W 52-20 metr\u00f3w - powlekany              <\/div>\n          <\/div>\n      <\/a>    \n        \n    <div class=\"clearfix\"><\/div>    \n<\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Hydranty_wewnetrze_DN_52_%E2%80%93_zawory\"><\/span>Hydranty wewn\u0119trze DN 52 \u2013 zawory<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Zawory 52 oraz zawory odcinaj\u0105ce w hydrantach 52 powinny posiada\u0107 nasady t\u0142oczne skierowane do do\u0142u, usytuowane wraz z pokr\u0119t\u0142em zaworu wzgl\u0119dem \u015bcian lub obudowy w spos\u00f3b umo\u017cliwiaj\u0105cy \u0142atwe przy\u0142\u0105czanie <a href=\"https:\/\/www.znakowo.pl\/weze-pozarnicze-strazackie\/\">w\u0119\u017ca po\u017carniczego<\/a> t\u0142oczonego oraz otwieranie i zamykanie jego zaworu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Hydranty_wewnetrzne_%E2%80%93_norma\"><\/span>Hydranty wewn\u0119trzne \u2013 norma<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Hydranty wewn\u0119trzne powinny spe\u0142nia\u0107 wymagania normy PN-EN 671-2:2012 (Sta\u0142e urz\u0105dzenia ga\u015bnicze &#8212; Hydranty wewn\u0119trzne &#8212; Cz\u0119\u015b\u0107 2: Hydranty wewn\u0119trzne z w\u0119\u017cem p\u0142asko sk\u0142adanym).<\/p>\n\n\n\n<p><strong>Hydranty wewn\u0119trzne DN 52 &#8211; parametry<\/strong><\/p>\n\n\n\n<p>Minimalna wydajno\u015b\u0107 poboru wody, mierzona na wylocie pr\u0105downicy, dla hydrantu wewn\u0119trznego 52 wynosi 2,5 dm<sup>3<\/sup>\/s.<\/p>\n\n\n\n<p>\u015arednice nominalne przewod\u00f3w zasilaj\u0105cych (w milimetrach), na kt\u00f3rych instaluje si\u0119 hydranty wewn\u0119trzne i zawory 52 dla hydrantu wewn\u0119trznego 52 powinny wynosi\u0107 co najmniej DN 50.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hydranty wewn\u0119trzne DN 52 z w\u0119\u017cem p\u0142asko sk\u0142adanym stanowi\u0105 jeden z&nbsp;rodzaj\u00f3w punkt\u00f3w poboru wody do cel\u00f3w przeciwpo\u017carowych. Jakie wymagania musz\u0105 spe\u0142nia\u0107?<\/p>\n","protected":false},"author":3,"featured_media":3065,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[420],"tags":[],"class_list":["post-3047","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ppoz"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hydranty wewn\u0119trzne DN 52 - Blog znakowo.pl<\/title>\n<meta name=\"description\" content=\"Hydranty wewn\u0119trzne DN 52 z w\u0119\u017cem p\u0142asko sk\u0142adanym stanowi\u0105 jeden z rodzaj\u00f3w punkt\u00f3w poboru wody do cel\u00f3w przeciwpo\u017carowych.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.znakowo.pl\/blog\/hydranty-wewnetrzne-dn-52\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hydranty wewn\u0119trzne DN 52 - 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