{"id":5259,"date":"2024-03-25T22:35:21","date_gmt":"2024-03-25T21:35:21","guid":{"rendered":"https:\/\/rr-rieger.com\/ventile\/hygienic-double-seat-tank-bottom-seat-diverter-valves-n9\/"},"modified":"2025-12-22T14:40:40","modified_gmt":"2025-12-22T13:40:40","slug":"hygiene-doppelsitz-tankbodensitz-umstellventile-n9","status":"publish","type":"ventile","link":"https:\/\/rr-rieger.com\/en\/valves\/hygiene-doppelsitz-tankbodensitz-umstellventile-n9\/","title":{"rendered":"Hygienic double-seat tank bottom seat diverter valves N9"},"template":"","meta":{"product_description":"<p>RIEGER offers this variant of the double-seat bottom valve as a special feature on the market, in which the function of a diverter valve is also realized.<br>The advantage over the usual straight-through double-seat bottom valves is that the pipeline is not filled when filling or emptying rows of tanks.<br>The pipeline is only open up to the tank to be filled. This avoids an additional risk of contamination from otherwise necessary shut-off valves.<\/p>\n","technical_data":"<table border=\"0\" cellpadding=\"0\" align=\"center\">\n<tbody>\n<tr>\n<td><strong>Material<\/strong><\/td>\n<td colspan=\"2\">in contact with the product<br>optional<br>not in contact with the product<\/td>\n<td>1.4404\/AISI316L<br>1.4435\/AISI316L<br>1.4301\/AISI304<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td colspan=\"2\"><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><strong>Seals<\/strong><\/td>\n<td colspan=\"2\">O-rings\/seals<\/td>\n<td>EPDM<br>(others on request)<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td colspan=\"2\"><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><strong>Temperatures<\/strong><\/td>\n<td>maximum<\/td>\n<td><\/td>\n<td>EPDM<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>Continuous operating temperature<br>Sterilization temperature<\/td>\n<td><\/td>\n<td>130 \u00b0C*<br>150 \u00b0C* for a short time<br>(approx. 20 min)<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><strong>Press<\/strong><\/td>\n<td colspan=\"2\">Closing pressure<\/p>\n<p>Control air pressure<\/td>\n<td>max. 4 bar in the tank<br>max. 10 bar in the pipe<br>min 6 bar -<br>max. 10 bar<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td colspan=\"2\"><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><strong>Surfaces<\/strong><\/td>\n<td colspan=\"2\">in contact with the product<br>optional<\/p>\n<p>not in contact with the product<\/td>\n<td>Ra \u2264 0.8 \u00b5m<br>e-polished, other surfaces on request<br>Ra \u2264 1.6 \u00b5m<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td colspan=\"2\"><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><strong>Connections<br>Standard-<br>Pipe classes<\/strong><\/td>\n<td colspan=\"3\">DIN 11850-R2 (DIN 11866 A)<br>O.D.-Tube (DIN 11866 C)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div align=\"center\">  *dependent on operating parameters<\/div>\n","benefits":"<ul>\n<li>with screwed-on weld-in flange, alternatively available with separate weld-in flange or pipe end to the tank<\/li>\n<li>Also available with only one outlet on the housing<\/li>\n<li>One-piece solid valve housing<\/li>\n<li>No welding distortion in the product space<\/li>\n<li>Pressure shock resistant up to 20 bar<\/li>\n<li>Balanced valve discs<\/li>\n<li>Low control air requirement<\/li>\n<li>Standard drive with lifting function<\/li>\n<li>Service possible without compressed air<\/li>\n<li>Valve insert can be removed downwards<\/li>\n<li>Radial sealing of both valve seats<\/li>\n<li>Only 4 seals in the product compartment<\/li>\n<li>Gasket replacement without special tools<\/li>\n<li>product-contacted stainless steel 316L<\/li>\n<li>Inner surface Ra \u2264 0.8 m (standard)<\/li>\n<li>Tight up to 4 bar tank pressure<\/li>\n<li>also available in 3-A version<\/li>\n<\/ul>\n<p><b>Nominal widths:<\/b><\/p>\n<ul>\n<li>DN 40 - DN 100<\/li>\n<li>1,5\" - 4\"<\/li>\n<\/ul>\n","electronic_feedback":"<p><img class=\"alignnone size-medium wp-image-970\" src=\"https:\/\/rr-rieger.com\/wp-content\/uploads\/2024\/03\/rr-rieger-flowstar-logo-300x84.png\" alt=\"\" width=\"300\" height=\"84\"><\/p>\n<p><b>The control head from Rieger was developed in collaboration between AWH and Rieger together with B\u00fcrkert.<br>Rieger thus offers you a tailor-made solution for your in-house hygienic and aseptic process valves, enabling them to be used even more efficiently and accurately.<\/b><\/p>\n<p><b>NON-CONTACT INDUCTIVE VALVE POSITION DETECTION (TEACH FUNCTION)<\/b><\/p>\n<ul>\n<li>Colored illuminated status display<\/li>\n<li>Integrated control air routing in the drive<\/li>\n<li>Fieldbus interface AS-Interface, DeviceNet, IO-Link or B\u00fcrkert system bus (b\u00fcS)<\/li>\n<li>with ATEX option:<br>Ex II 3 G Ex ec IIC T4 Gc X<br>Ex II 3 D Ex tc IIIC T135\u00b0C Dc X<\/li>\n<\/ul>\n<p>The FlowStar is available in 24 V DC, AS-I bus, IO-Link (Port Class A) or Ethernet IP versions.<br>All versions are available as the following alternative:<\/p>\n<ul>\n<li>3 solenoid valves, 3 internal switching points + 1 output for ext. Switching point via Ini<\/li>\n<\/ul>\n<p>Mounting kit integrated in the control head - no separate mounting kit required. Exception for LCV valves, ESV valves.<\/p>\n","special_alloys":"<p>All valves are available in special materials such as <b>Hastelloy\u00ae C-22, 1.4539\/904L, 1.4529, AL-6XN\u00ae <\/b>and <b>others <\/b>.<\/p>\n<p>Please contact us directly:<br><a href=\"mailto:sales@rr-rieger.de\">sales@rr-rieger.de<\/a><br>Tel.: +49 7361 5702-0<\/p>\n","image":"1754","valve_category":"hygienic_valves"},"class_list":["post-5259","ventile","type-ventile","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hygienic double-seat tank bottom seat diverter valves N9 | Rieger<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rr-rieger.com\/en\/valves\/hygiene-doppelsitz-tankbodensitz-umstellventile-n9\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hygienic double-seat tank bottom seat diverter valves N9 | Rieger\" \/>\n<meta property=\"og:url\" content=\"https:\/\/rr-rieger.com\/en\/valves\/hygiene-doppelsitz-tankbodensitz-umstellventile-n9\/\" \/>\n<meta property=\"og:site_name\" content=\"Rieger\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-22T13:40:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/rr-rieger.com\/wp-content\/uploads\/2024\/04\/ventilknoten-2.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"400\" \/>\n\t<meta property=\"og:image:height\" content=\"266\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/valves\\\/hygiene-doppelsitz-tankbodensitz-umstellventile-n9\\\/\",\"url\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/valves\\\/hygiene-doppelsitz-tankbodensitz-umstellventile-n9\\\/\",\"name\":\"Hygienic double-seat tank bottom seat diverter valves N9 | Rieger\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/#website\"},\"datePublished\":\"2024-03-25T21:35:21+00:00\",\"dateModified\":\"2025-12-22T13:40:40+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/valves\\\/hygiene-doppelsitz-tankbodensitz-umstellventile-n9\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/rr-rieger.com\\\/en\\\/valves\\\/hygiene-doppelsitz-tankbodensitz-umstellventile-n9\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/valves\\\/hygiene-doppelsitz-tankbodensitz-umstellventile-n9\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Startseite\",\"item\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/home-page\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Ventile\",\"item\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/valves\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Hygienic double-seat tank bottom seat diverter valves N9\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/\",\"name\":\"Rieger\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/#organization\",\"name\":\"Gebr. 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