{"id":7661,"date":"2025-04-03T16:26:15","date_gmt":"2025-04-03T16:26:15","guid":{"rendered":"https:\/\/www.pecta.pt\/produto\/circular-sight-glass-fitting-type-321-ansi-150-din-28121\/"},"modified":"2026-04-10T12:41:15","modified_gmt":"2026-04-10T12:41:15","slug":"circular-sight-glass-fitting-type-321-ansi-150-din-28121","status":"publish","type":"product","link":"https:\/\/www.pecta.pt\/en\/produto\/circular-sight-glass-fitting-type-321-ansi-150-din-28121\/","title":{"rendered":"Circular sight glass fitting type 321 &#8211; ANSI 150 &#8211; DIN 28121"},"content":{"rendered":"<div id=\"divEspecific3\">\n<div class=\"product-text\">\n<section class=\"page-section\">\n<div class=\"container\">\n<div class=\"tabs-wrapper content-tabs\">\n<div class=\"tab-content\">\n<div id=\"item-description\" class=\"tab-pane fade in active\">\n<p>The 321A model is supplied pre-assembled from the factory and can be bolted directly onto the flange in accordance with ASME B16.5 without any additional effort required.<\/p>\n<p>The 321A model is constructed from high-quality 1.4571 (316Ti) stainless steel, which is highly valued by our customers. The glass used is industry-proven borosilicate glass 3.3, in accordance with DIN 7080 (or equivalent). <\/p>\n<p>If the process conditions pose a problem even for highly resistant borosilicate glass, a specially adapted mica or FEP protective screen for the connection provides additional protection against steam and aggressive chemicals, such as alkalis with a pH value of up to 14.<\/p>\n<p>Like other circular product displays, the 321A model can be fitted with SGW-type brushes, spray devices and lights on request.<\/p>\n<section style=\"max-width: 1000px; margin: 0 auto;\">\n<h4>TECHNICAL SPECIFICATIONS &#8211; Circular sight glass fitting type 321<\/h4>\n<table style=\"width: 100%; border-collapse: collapse; font-family: sans-serif;\">\n<tbody>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ccc;\"><strong>Flange Material:<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ccc;\">Base Flange: 1.4571 (standard)<br \/>\nCover Flange: 1.4571 (standard)<br \/>\nOther materials on request<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ccc;\"><strong>Design:<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ccc;\">In accordance with DIN 28121, but for ANSI\/ASME flanges<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ccc;\"><strong>Seals:<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ccc;\">PTFE<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ccc;\"><strong>Nominal size:<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ccc;\">2\u2018 to 8\u2019<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ccc;\"><strong>Temperature \/ Glass:<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ccc;\">Up to 200\u00b0C with borosilicate glass complying with or similar to DIN 7080<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ccc;\"><strong>Options:<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ccc;\">Wiper SGW with PTFE or silicone wiper blade<br \/>\nLED light for Ex and non-Ex areas<br \/>\nSpraying device SVII<br \/>\nFEP or Halar\u00ae coating<br \/>\nMica protection disc<br \/>\nSpecial constructions<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><!-- V\u00eddeo incorporado --><\/p>\n<div style=\"margin: 30px auto; max-width: 800px;\"><iframe src=\"https:\/\/www.youtube.com\/embed\/hW4SrFximB8\" width=\"100%\" height=\"450\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/div>\n<div style=\"text-align: center;\"><a href=\"https:\/\/aci24.com\/en\/products\/tank-sight-glass\/product\/105-circular-sight-glass-fitting-type-321a-class-150-lbs\" rel=\"noopener\" target=\"_blank\">Website ACI \u2013 Circular sight glass fitting type 321<\/a><\/div>\n<p><a style=\"position: absolute; left: -9999px;\" href=\"https:\/\/www.pecta.pt\/category\/aci\/\">ACI<\/a><\/p>\n<p>&nbsp;<\/p>\n<\/section>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>In accordance with DIN 28121 for ASME\/ANSI flanges.<\/p>\n<p>Type 321A circular product sight glasses are bolted onto flanges in accordance with ASME B16.5 to allow observation or illumination of the interior of the vessel. The 321A sight glass is designed in accordance with DIN 28121 and can be easily used to replace existing fittings that comply with DIN 28121. A sight glass made of highly chemically resistant borosilicate glass DIN 7080 (or similar) is secured between two high-quality stainless steel flanges and PTFE seals. This sight glass complies with all defined operating standards and is designed for an operating pressure of up to 20 bar(g).   <\/p>\n","protected":false},"featured_media":6461,"template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[343,344],"product_tag":[401,408,406],"class_list":{"0":"post-7661","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-aci","7":"product_cat-circular-sight-glasses","8":"product_tag-food-beverages","9":"product_tag-general-industry","10":"product_tag-pharmaceutical","11":"desktop-align-left","12":"tablet-align-left","13":"mobile-align-left","15":"first","16":"onbackorder","17":"downloadable","18":"virtual","19":"product-type-simple"},"uagb_featured_image_src":{"full":["https:\/\/www.pecta.pt\/wp-content\/uploads\/2025\/04\/type-321.png",500,500,false],"thumbnail":["https:\/\/www.pecta.pt\/wp-content\/uploads\/2025\/04\/type-321-150x150.png",150,150,true],"medium":["https:\/\/www.pecta.pt\/wp-content\/uploads\/2025\/04\/type-321-300x300.png",300,300,true],"medium_large":["https:\/\/www.pecta.pt\/wp-content\/uploads\/2025\/04\/type-321.png",500,500,false],"large":["https:\/\/www.pecta.pt\/wp-content\/uploads\/2025\/04\/type-321.png",500,500,false],"1536x1536":["https:\/\/www.pecta.pt\/wp-content\/uploads\/2025\/04\/type-321.png",500,500,false],"2048x2048":["https:\/\/www.pecta.pt\/wp-content\/uploads\/2025\/04\/type-321.png",500,500,false],"woocommerce_thumbnail":["https:\/\/www.pecta.pt\/wp-content\/uploads\/2025\/04\/type-321-300x300.png",300,300,true],"woocommerce_single":["https:\/\/www.pecta.pt\/wp-content\/uploads\/2025\/04\/type-321.png",500,500,false],"woocommerce_gallery_thumbnail":["https:\/\/www.pecta.pt\/wp-content\/uploads\/2025\/04\/type-321-100x100.png",100,100,true]},"uagb_author_info":{"display_name":"PECTA","author_link":"https:\/\/www.pecta.pt\/en\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"In accordance with DIN 28121 for ASME\/ANSI flanges. Type 321A circular product sight glasses are bolted onto flanges in accordance with ASME B16.5 to allow observation or illumination of the interior of the vessel. The 321A sight glass is designed in accordance with DIN 28121 and can be easily used to replace existing fittings that&hellip;","_links":{"self":[{"href":"https:\/\/www.pecta.pt\/en\/wp-json\/wp\/v2\/product\/7661","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pecta.pt\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.pecta.pt\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pecta.pt\/en\/wp-json\/wp\/v2\/media\/6461"}],"wp:attachment":[{"href":"https:\/\/www.pecta.pt\/en\/wp-json\/wp\/v2\/media?parent=7661"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.pecta.pt\/en\/wp-json\/wp\/v2\/product_brand?post=7661"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.pecta.pt\/en\/wp-json\/wp\/v2\/product_cat?post=7661"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.pecta.pt\/en\/wp-json\/wp\/v2\/product_tag?post=7661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}