{"id":13890,"date":"2026-09-29T16:00:22","date_gmt":"2026-09-29T14:00:22","guid":{"rendered":"https:\/\/lubeteam.it\/?post_type=product&#038;p=13890"},"modified":"2026-09-30T12:20:34","modified_gmt":"2026-09-30T10:20:34","slug":"oleo-tecnica-npt-threaded-double-flanges","status":"publish","type":"product","link":"https:\/\/lubeteam.it\/en\/product\/oleo-tecnica-npt-threaded-double-flanges\/","title":{"rendered":"Oleo Tecnica NPT Threaded Double Flanges"},"content":{"rendered":"<p><strong>Oleo Tecnica NPT Threaded Double Flanges<\/strong> are a fundamental component for ensuring perfect hydraulic sealing in systems operating at high and very high pressures. Engineered with precision for fluid shut-off and connection, these double flanges are used in industrial hydraulic circuits where mechanical reliability is an essential requirement for the proper operation of the entire system.<\/p>\n<h3>Pressure Specifications: Series 3000 and Series 6000<\/h3>\n<p>The range is divided into two main product lines, developed to withstand different pressure loads. Series 3000 offers a maximum recommended working pressure that varies according to nominal size: it reaches 345 kg\/cm\u00b2 for sizes from 1\/2&#8243; to 1&#8243;, 276 kg\/cm\u00b2 for the 1&#8243;1\/4 size, 207 kg\/cm\u00b2 for variants from 1&#8243;1\/2 to 2&#8243;, 172 kg\/cm\u00b2 for 2&#8243;1\/2, 138 kg\/cm\u00b2 for 3&#8243;, and finally drops to 34 kg\/cm\u00b2 for larger sizes ranging from 3&#8243;1\/2 to 5&#8243;.<br \/> For applications requiring greater resistance, Series 6000 ensures constant structural sealing at working pressures up to 414 kg\/cm\u00b2, uniformly covering nominal sizes from the smallest 1\/2&#8243; format up to 3&#8243;.<\/p>\n<h3>Construction Materials and Designation Variants<\/h3>\n<p>The materials used for flange construction ensure strength and resistance in demanding industrial environments. Available options include S355 carbon steel and AISI 316L stainless steel, both ideal for safe fluid handling.<br \/> The ordering designation includes four main combinations: the &#8220;NM&#8221; suffix indicates the set supplied with metric screws, while the &#8220;NU&#8221; suffix identifies versions equipped with UNC screws. Accordingly, the root codes &#8220;DFS&#8221; refer to the S355 steel model, while &#8220;DFX&#8221; identifies the AISI 316L variant. It is important to note that UNC screw sets are available exclusively for the carbon steel version.<\/p>\n<h3>Fastening Screws and Included Components<\/h3>\n<p>Each kit is supplied as a complete, ready-to-install set. The assembly includes the flange, counter flange, screw set (available in either metric or UNC systems, with specific material restrictions such as for models DFS507N and DFS508N, which are available only with metric carbon steel screws) and the O-ring for leak-tight sealing. The supplied O-rings (types from 4075 to 4537) are matched precisely to the flange geometry, minimizing the risk of leakage within the circuit.<\/p>\n<h3>Summary technical table of the main characteristics of Oleo Tecnica NPT Threaded Double Flanges.<\/h3>\n<div style=\"width: 100%; overflow-x: auto;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f2f2f2;\">Feature<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f2f2f2;\">Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Flange Type<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">NPT Threaded Double Flanges<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Reference Series<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Series 3000 and Series 6000<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Series 3000 Size Range<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">From 1\/2&#8243; to 5&#8243;<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Series 6000 Size Range<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">From 1\/2&#8243; to 3&#8243;<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Max. Working Pressure (Series 3000)<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">From 34 to 345 Kg\/cm\u00b2 (depending on size)<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Max. Working Pressure (Series 6000)<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Up to 414 Kg\/cm\u00b2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Available Materials<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">S355 Steel \/ AISI 316L Stainless Steel<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Supplied Screw Type<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Metric (NM) or UNC (NU)<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h3>Product Codes<\/h3>\n<div style=\"width: 100%; overflow-x: auto;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f2f2f2;\">Model<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f2f2f2;\">Series<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f2f2f2;\">Size<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f2f2f2;\">Max. Pressure (Kg\/cm\u00b2)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f2f2f2;\">O-Ring Type<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS080N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/2&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">345<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4075<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS080N038<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/2&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">345<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4075<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS100N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3\/4&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">345<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4100<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS100N012<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3\/4&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">345<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4100<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS102N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">345<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4131<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS102N034<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">345<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4131<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS104N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">276<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4150<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS104N100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">276<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4150<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS106N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">207<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4187<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS106N114<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">207<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4187<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS108N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">2&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">207<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4225<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS108N112<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">2&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">207<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4225<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS110N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">2&#8243;1\/2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">172<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4275<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS112N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">138<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4337<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS114N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3&#8243;1\/2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">34<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4387<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS116N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">34<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4437<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS118N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">5&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">34<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4537<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS401N012<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/2&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4075<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS401N038<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/2&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4075<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS402N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3\/4&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4100<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS402N012<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3\/4&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4100<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS403N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4131<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS403N034<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4131<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS404N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4150<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS404NL13<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4150<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS404N100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4150<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS404N100L13<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4150<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS405N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4187<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS405N114<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4187<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS406N<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">2&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4225<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS406N112<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">2&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4225<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS507N*<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">2&#8243;1\/2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4275<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DFS508N*<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4337<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Oleo Tecnica NPT Threaded Double Flanges provide maximum sealing and reliability for industrial hydraulic connections. Available in Series 3000 variants (pressures up to 345 kg\/cm\u00b2) and Series 6000 variants (pressures up to 414 kg\/cm\u00b2), they are manufactured in S355 carbon steel or AISI 316L stainless steel. Supplied complete with metric or UNC screws and O-rings, they ensure secure fastening in complex high-pressure systems. The available product code families are: DFS&#8230;NM, DFS&#8230;NU, DFX&#8230;NM, DFX&#8230;NU.<\/p>\n","protected":false},"featured_media":13763,"template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[106,493,498],"product_tag":[327],"class_list":{"0":"post-13890","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-flanges","7":"product_cat-sae-j518","8":"product_cat-threaded-flanges","9":"product_tag-oleo-tecnica","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v26.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Oleo Tecnica NPT Threaded Double Flanges - LubeTeam Hydraulic<\/title>\n<meta name=\"description\" content=\"Oleo Tecnica NPT Threaded Double Flanges for high-pressure applications. 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