{"id":10277,"date":"2026-03-19T16:39:56","date_gmt":"2026-03-19T14:39:56","guid":{"rendered":"https:\/\/vestelli-fi.kehityspalvelin.fi\/tuote\/separate-drainage-extra-low-iisi-5000-closed-tank-iisi-h6-greywater-treatment-plant\/"},"modified":"2026-07-08T16:09:34","modified_gmt":"2026-07-08T13:09:34","slug":"separate-drainage-extra-low-iisi-5000-closed-tank-iisi-h6-greywater-treatment-plant","status":"publish","type":"product","link":"https:\/\/vestelli-fi.kehityspalvelin.fi\/en\/tuote\/separate-drainage-extra-low-iisi-5000-closed-tank-iisi-h6-greywater-treatment-plant\/","title":{"rendered":"Separate drainage Extra low IISI 5000 Closed tank + IISI H6 Greywater treatment plant"},"content":{"rendered":"<p>[nectar_icon icon_family=&#8221;fontawesome&#8221; icon_style=&#8221;default&#8221; icon_color_type=&#8221;color_scheme&#8221; icon_color=&#8221;Accent-Color&#8221; icon_padding=&#8221;20px&#8221;]<\/p>\n","protected":false},"excerpt":{"rendered":"<p><span style=\"color: #333333;\"><strong>Price from \u20ac7,530.00 <\/strong><\/span><\/p>\n<p><span style=\"color: #333333;\">Separate sewage is a good method for treating all domestic wastewater in a property, both in a detached house and a holiday home. Toilet water is directed to a closed tank and washing water to a greywater treatment plant. <\/span><\/p>\n<p>The properties <a href=\"https:\/\/avalon-nordic.kansleri.fi\/fi\/produkt\/erikoismatala-iisi-5000-umpisailio\/\" target=\"_blank\" rel=\"noopener\"><strong>of the ultra-low IISI \u2013 5000 Closed Tank<\/strong><\/a> <span style=\"color: #333333;\">are in a class of their own and their strength properties are still 100% present when the durability limits of a conventional closed tank have already been reached.<\/span><\/p>\n<ul>\n<li><span style=\"color: #333333;\">200% higher permissible groundwater level in the soil<\/span><\/li>\n<li><span style=\"color: #333333;\">50% lower installation trench requirement below the inlet drain<\/span><\/li>\n<li><span style=\"color: #333333;\">25% higher permitted soil fill on top of the tank<\/span><\/li>\n<li><span style=\"color: #333333;\">large service pipes 450 and 800 mm<\/span><\/li>\n<li><span style=\"color: #333333;\">ultra-low and strength-optimized design<\/span><\/li>\n<li><span style=\"color: #333333;\">made from the best raw materials without sparing them<\/span><\/li>\n<li><span style=\"color: #333333;\">environmentally friendly 100% recyclable raw material is also food grade<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #333333;\"><span style=\"color: #2dccd3;\"><strong><a style=\"color: #2dccd3;\" href=\"https:\/\/avalon-nordic.kansleri.fi\/fi\/produkt\/iisi-h6\/\" target=\"_blank\" rel=\"noopener\">IISI H6 Greywater treatment plant<\/a><\/strong><\/span> cleans washing water naturally with top results<\/span><\/p>\n<ul>\n<li><span style=\"color: #333333;\">98% cleaning efficiency, top results in independent tests<\/span><\/li>\n<li><span style=\"color: #333333;\">completely natural cleaning<\/span><\/li>\n<li><span style=\"color: #333333;\">Self-anchoring design \u2013 no need for separate anchoring<\/span><\/li>\n<li><span style=\"color: #333333;\">inexpensive to use, electricity approx. 2-3\u20ac\/month and only one emptying per year <\/span><\/li>\n<li><span style=\"color: #333333;\">Suitable for single-family homes and occasional use in holiday homes<\/span><\/li>\n<li><span style=\"color: #333333;\">lightweight and ready-to-install structure<\/span><\/li>\n<li><span style=\"color: #333333;\">easy and quick to install<\/span><\/li>\n<li><span style=\"color: #333333;\">no need for an absorption field<\/span><\/li>\n<li><span style=\"color: #333333;\">no replaceable turfs<\/span><\/li>\n<li><span style=\"color: #333333;\">no chemicals<\/span><\/li>\n<\/ul>\n","protected":false},"featured_media":10279,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[139,137],"product_tag":[],"class_list":["post-10277","product","type-product","status-publish","has-post-thumbnail","product_cat-greywater-treatment-for-homes-and-holiday-properties","product_cat-septic-tanks","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Separate drainage Extra low IISI 5000 Closed tank + IISI H6 Greywater treatment plant | Vestelli.fi<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Separate drainage Extra low IISI 5000 Closed tank + IISI H6 Greywater treatment plant | Vestelli.fi\" \/>\n<meta property=\"og:description\" content=\"Price from \u20ac7,530.00 Separate sewage is a good method for treating all domestic wastewater in a property, both in a detached house and a holiday home. Toilet water is directed to a closed tank and washing water to a greywater treatment plant. The properties of the ultra-low IISI \u2013 5000 Closed Tank are in a class of their own and their strength properties are still 100% present when the durability limits of a conventional closed tank have already been reached. 200% higher permissible groundwater level in the soil 50% lower installation trench requirement below the inlet drain 25% higher permitted soil fill on top of the tank large service pipes 450 and 800 mm ultra-low and strength-optimized design made from the best raw materials without sparing them environmentally friendly 100% recyclable raw material is also food grade IISI H6 Greywater treatment plant cleans washing water naturally with top results 98% cleaning efficiency, top results in independent tests completely natural cleaning Self-anchoring design \u2013 no need for separate anchoring inexpensive to use, electricity approx. 2-3\u20ac\/month and only one emptying per year Suitable for single-family homes and occasional use in holiday homes lightweight and ready-to-install structure easy and quick to install no need for an absorption field no replaceable turfs no chemicals\" \/>\n<meta property=\"og:url\" content=\"https:\/\/vestelli-fi.kehityspalvelin.fi\/en\/tuote\/separate-drainage-extra-low-iisi-5000-closed-tank-iisi-h6-greywater-treatment-plant\/\" \/>\n<meta property=\"og:site_name\" content=\"Vestelli.fi\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-08T13:09:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2026\/03\/3626480-Umpisailio-erikoismatala-5000-IISI-H6.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"1600\" \/>\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\" 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