{"id":3964,"date":"2021-09-20T16:02:09","date_gmt":"2021-09-20T20:02:09","guid":{"rendered":"https:\/\/www.ovivowater.com\/?post_type=product&#038;p=3964"},"modified":"2025-10-30T17:22:34","modified_gmt":"2025-10-30T21:22:34","slug":"castkleen-underdrain","status":"publish","type":"product","link":"https:\/\/www.ovivowater.com\/en\/product\/castkleen-underdrain\/","title":{"rendered":"CastKleen\u00ae Underdrain"},"content":{"rendered":"<div data-block_5eb05d490a2020e4f144e87e53840fbd class=\"ovivo-content-block block-image-text \">\n  <div class=\"container\">\n    <div class=\"row justify-content-between align-items-center\">\n      <div class=\"col-12 image-div col-md-6 order-md-2\">\n                              <div class=\"block-image-text__slider--wrapper\">\n              <div class=\"block-image-text__slider--slides\">\n                                                  \n                  <div class=\"block-image-text__slider--slide\">\n                                                                                        \n                                              <img decoding=\"async\" src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/PDP_CastKleen-04_735x551.webp\" alt=\"Diagram explaining CastKleen\u00ae Underdrain media filter with other components\" class=\"img-fluid block-image-text__slide\">\n                                                            <\/div>\n                                                    \n                  <div class=\"block-image-text__slider--slide\">\n                                                                                        \n                                              <img data-lazy=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/PDP_CastKleen-02_735x551.jpg\" alt=\"Plastic seating plates inserted on each nozzle inserted into CastKleen\u00ae Underdrain\" class=\"img-fluid block-image-text__slide\">\n                                                            <\/div>\n                                                    \n                  <div class=\"block-image-text__slider--slide\">\n                                                                                        \n                                              <img data-lazy=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/PDP_CastKleen-03_735x551.jpg\" alt=\"Tailpipes inserted into CastKleen\u00ae Underdrain\" class=\"img-fluid block-image-text__slide\">\n                                                            <\/div>\n                                                    \n                  <div class=\"block-image-text__slider--slide\">\n                                                                                        \n                                              <img data-lazy=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/CastKleen_Underdrain_004_735x551.webp\" alt=\"Removing fresh concrete over plastic seating of FlexKleen nozzles inserted into CastKleen Underdrain\" class=\"img-fluid block-image-text__slide\">\n                                                            <\/div>\n                                                    \n                  <div class=\"block-image-text__slider--slide\">\n                                                                                        \n                                              <img data-lazy=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/CastKleen_Underdrain_003_735x551.webp\" alt=\"Ready to add FlexKleen nozzles over tailpipes set in concrete over castKleen\u00ae Underdrain\" class=\"img-fluid block-image-text__slide\">\n                                                            <\/div>\n                                                    \n                  <div class=\"block-image-text__slider--slide\">\n                                                                                        \n                                              <img data-lazy=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/CastKleen_Underdrain_002_735x551.webp\" alt=\"Backwash air flow using FlexKleen nozzles inserted with tailpipes into CastKleen\u00ae Underdrain\" class=\"img-fluid block-image-text__slide\">\n                                                            <\/div>\n                                                    \n                  <div class=\"block-image-text__slider--slide\">\n                                                                                        \n                                              <img data-lazy=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/CastKleen_Underdrain_001_735x551.webp\" alt=\"Installing media over FlexKleen nozzles inserted with tailpipes into CastKleen\u00ae Underdrain\" class=\"img-fluid block-image-text__slide\">\n                                                            <\/div>\n                                                <\/div>\n                              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src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/PDP_CastKleen-02_735x551.jpg\" alt=\"Plastic seating plates inserted on each nozzle inserted into CastKleen\u00ae Underdrain\" class=\"img-fluid\">\n                                                <\/div>\n                                                                <div class=\"block-image-text__slider--slide\">\n                                                                                                                                            <img decoding=\"async\" src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/PDP_CastKleen-03_735x551.jpg\" alt=\"Tailpipes inserted into CastKleen\u00ae Underdrain\" class=\"img-fluid\">\n                                                <\/div>\n                                                                <div class=\"block-image-text__slider--slide\">\n                                                                                                                                            <img decoding=\"async\" src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/CastKleen_Underdrain_004_735x551.webp\" alt=\"Removing fresh concrete over plastic seating of FlexKleen nozzles inserted into CastKleen Underdrain\" class=\"img-fluid\">\n                                                <\/div>\n                                                                <div class=\"block-image-text__slider--slide\">\n                                                                                                                                            <img decoding=\"async\" src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/CastKleen_Underdrain_003_735x551.webp\" alt=\"Ready to add FlexKleen nozzles over tailpipes set in concrete over castKleen\u00ae Underdrain\" class=\"img-fluid\">\n                                                <\/div>\n                                                                <div class=\"block-image-text__slider--slide\">\n                                                                                                                                            <img decoding=\"async\" src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/CastKleen_Underdrain_002_735x551.webp\" alt=\"Backwash air flow using FlexKleen nozzles inserted with tailpipes into CastKleen\u00ae Underdrain\" class=\"img-fluid\">\n                                                <\/div>\n                                                                <div class=\"block-image-text__slider--slide\">\n                                                                                                                                            <img decoding=\"async\" src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/CastKleen_Underdrain_001_735x551.webp\" alt=\"Installing media over FlexKleen nozzles inserted with tailpipes into CastKleen\u00ae Underdrain\" class=\"img-fluid\">\n                                                <\/div>\n                                                            <\/div>\n                                      <div class=\"block-image-text__slider--arrows\">\n                      <button class=\"block-image-text__slider--arrow slick-next icon-ovivo-arrow_small\"\n                              title=\"Next\">\n                        Next\n                      <\/button>\n                      <button class=\"block-image-text__slider--arrow slick-prev icon-ovivo-arrow_small\"\n                              title=\"Previous\">\n                        Previous\n                      <\/button>\n                    <\/div>\n                                  <\/div>\n                          <\/div>\n                        <\/div>\n      <div class=\"col-12 text-div col-md-6 col-xl-5 pl-lg-5 pl-xl-3\">\n                      <div class=\"wysiwyg\">\n                \n                                  <div class=\"block-image-text__microcopy\">Cast-in-place granular media filter underdrain<\/div>\n<h1 class=\"block-image-text__heading\">CastKleen<sup>\u00ae<\/sup> Underdrain<\/h1>\n\n                                                  <h6 class=\"block-image-text__subheading\">CastKleen Underdrain is a cast-in-place media filter underdrain that supports filter media, collects filtered water, and evenly distributes backwash supply water and air. This efficient filter can reduce waste and lower operating and management costs.\r\n\r\n<\/h6>\n                                                  <p>By combining a rapid fit floor-forming system with the flow management of Flexkleen\u2122 nozzles, Castkleen offers substantial savings over other granular media filters in installation time, maintenance and improved media scour.<\/p>\n                                                  <a href=\"https:\/\/www.ovivowater.com\/en\/contact\/\" target=\"\"\n                     class=\"secondary-button imgblock-common_button\">\n                    <span>Contact an Expert<\/span>\n                    <i class=\"icon-ovivo-arrow\"><\/i>\n                  <\/a>\n                                              <\/div>\n          <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n\n<div data-block_925e38f97e24fdd4f6a27f9e21f95914 class=\"ovivo-content-block anchor-nav-content__wrapper owproduct-tblcontent-wraper\">\n    <div class=\"anchor-nav-content__nav--sticky\">\n        <div class=\"container\">\n            <div class=\"row\">\n                <div class=\"col-12 p-0 pr-lg-3 pl-lg-3\">\n                    <ul class=\"nav nav-tabs anchor-nav-content__nav--listing fc-anchor-nav-content-nav\">\n                                                                                    <li class=\"nav-item anchor-nav-content__nav--single\" role=\"presentation\">\n                                    <a class=\"nav-link active \" href=\"#pills-0\">Features &amp; Benefits<\/a>\n                                <\/li>\n                                                            <li class=\"nav-item anchor-nav-content__nav--single\" role=\"presentation\">\n                                    <a class=\"nav-link \" href=\"#pills-1\">How it works<\/a>\n                                <\/li>\n                                                            <li class=\"nav-item anchor-nav-content__nav--single\" role=\"presentation\">\n                                    <a class=\"nav-link \" href=\"#pills-2\">Technical Information<\/a>\n                                <\/li>\n                                                        <li class=\"nav-item anchor-nav-content__nav--single related\" role=\"presentation\">\n                                <a class=\"nav-link\" href=\"#pills-related\">Related Products<\/a>\n                            <\/li>\n                                            <\/ul>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n    <div class=\"anchor-nav-content__tabs\">\n                                                                            <div class=\"anchor-nav-content__tab ownoprod-section otablecontent-1\" id=\"pills-0\" name=\"pills-0\" >\n                    <div class=\"container\">\n                        <div class=\"row\">\n                            <div class=\"col-12\">\n                                <div id=\"accordion-pills-0\" role=\"tablist\" aria-multiselectable=\"true\">\n                                    <div class=\"card\">\n                                        <div class=\"card-header\" role=\"tab\" id=\"section1HeaderId\">\n                                            <h2 class=\"mb-0\">\n                                                <a class=\"anchor-nav-content__tab--title\" data-toggle=\"collapse\" data-parent=\"#accordion-pills-0\" href=\"#accordion-content-0\" aria-expanded=\"true\" aria-controls=\"#accordion-content-0\">\n                                                    Features &amp; Benefits\n                                                <\/a>\n                                            <\/h2>\n                                        <\/div>\n                                                                                                                                <div id=\"accordion-content-0\" class=\"in collapse show\" role=\"tabpanel\" aria-labelledby=\"section1HeaderId\">\n                                                <div class=\"card-body\">\n                                                    <div class=\"anchor-nav-content__tab--content\">\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <div class=\"row justify-content-center is_last\">\n                                                                        <div class=\"col-12 col-lg-10 col-xl-9 col-xxl-8\">\n                                                                            <div data-block_925e38f97e24fdd4f6a27f9e21f95914 class=\"ovivo-content-block block-generic-content__wrapper\">\n    <div class=\"container\">\n        <div class=\"row justify-content-center\">\n            <div class=\"col-12  \">\n                <div class=\"owrow\">\n                                            <div class=\"block-generic-content__single wysiwyg \">\n                                                                                        <p>With the Ovivo Castkleen Underdrain, the media is rapidly cleaned, using less water and with uniform distribution. The Castkleen Underdrain system utilises a concrete floor with reinforcing bars and Flexkleen Nozzles. The spacing of the nozzles, design of the multiple slots distributing the air and\/or water, ease of adjustment for level, and the headloss generated through the nozzle, ensures uniform distribution and uniform cleaning of the filter media.<\/p>\n<p>During operation, backwash water and scouring air flows are evenly distributed with FlexKleen nozzles. A fine comb of reverse wedge slots at the outer rim of each nozzle ensures consistent media cleaning and maximum filter throughput. The precision molded slots impose a uniform headloss and prevent media loss. Filter beds can be placed directly over the nozzles without a gravel support later, allowing maximum utilization of available head and reducing construction and maintenance expense.<\/p>\n<p>The CastKleen Underdrain has the following additional features and benefits:<\/p>\n<ul>\n<li>Non-corroding components<\/li>\n<li>Monolithic structure<\/li>\n<li>Evenly distributed backwash and air scouring air flows<\/li>\n<li>Convenient and easy access to filter plenum<\/li>\n<li>Metric size underdrain panels for international projects<\/li>\n<\/ul>\n\n                                                    <\/div>\n                                    <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n                                                                        <\/div>\n                                                                    <\/div>\n                                                                                                                                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               EWT\u2122 CastKleen\u00ae Underdrain\n                                <\/div>\n                                <div class=\"block-digital-assets__single--sub-title\">\n                                    BROCHURE\n                                <\/div>\n                                <div class=\"block-digital-assets__single--description\">\n                                    For granular media filters\n                                <\/div>\n                            <\/a>\n                        <\/div>\n                                    <\/div>\n            <\/div>\n        <\/div>\n                                                            <\/div>\n                                                    <\/div>\n                                                <\/div>\n                                                                                                                        <\/div>\n                                <\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n                                                            <div class=\"anchor-nav-content__tab ownoprod-section otablecontent-2\" id=\"pills-1\" name=\"pills-1\" >\n                    <div class=\"container\">\n                        <div class=\"row\">\n                            <div class=\"col-12\">\n                                <div id=\"accordion-pills-1\" role=\"tablist\" aria-multiselectable=\"true\">\n                                    <div class=\"card\">\n                                        <div class=\"card-header\" role=\"tab\" id=\"section1HeaderId\">\n                                            <h2 class=\"mb-0\">\n                                                <a class=\"anchor-nav-content__tab--title\" data-toggle=\"collapse\" data-parent=\"#accordion-pills-1\" href=\"#accordion-content-1\" aria-expanded=\"true\" aria-controls=\"#accordion-content-1\">\n                                                    How it works\n                                                <\/a>\n                                            <\/h2>\n                                        <\/div>\n                                                                                                                                <div id=\"accordion-content-1\" class=\"in collapse show\" role=\"tabpanel\" aria-labelledby=\"section1HeaderId\">\n                                                <div class=\"card-body\">\n                                                    <div class=\"anchor-nav-content__tab--content\">\n                                                                                                                                                                                        <div class=\"row justify-content-center is_last\">\n                                                                        <div class=\"col-12\">\n                                 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<div class=\"wysiwyg\">\n            \n                                  <p>For an air scour backwash to be effective, air must be evenly distributed throughout the media bed. Inconsistent cleaning leads to uneven filtration flow, the need for more frequent backwashing and declining filter throughput. The key to uniform air distribution is the careful placement of all air intake ports at the same elevation. In most underdrain systems, this is accomplished by a laborious process of floor leveling. The CastKleen Underdrain takes a different approach, without the need for expensive floor leveling or finishing.<\/p>\n<p>Ovivo uses a flow control nozzle that has been designed specifically for air scour applications and features an adjustable sleeve and tailpipe assembly. A fixed insert is locked into the floor panels with a snap ring, and is then encased within the concrete floor slab. The sleeve and tailpipe then slide vertically into the insert, and are held at the selected elevation by a tongue-and-groove locking arrangement. With the nozzle removed, a turn of the wrist unlocks, repositions and re-secures the tailpipe. Tailpipe elevation can now be achieved quickly and independently of floor grades, ensuring uniform media cleaning without the time and expense spent on floor leveling.<\/p>\n<p>Using standard concrete construction techniques, cast-in-place CastKleen Underdrains are installed using snap-together components and cast-in-place installation techniques, which allow rapid, simplified assembly.<\/p>\n\n                                                                                              <\/div>\n          <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n                                                                        <\/div>\n                                                                    <\/div>\n                                                                                                                                                                                <\/div>\n                                                <\/div>\n                                            <\/div><!--accordion-content-1-->\n                                                                                                                        <\/div>\n                                <\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n                                                            <div class=\"anchor-nav-content__tab ownoprod-section otablecontent-3\" id=\"pills-2\" name=\"pills-2\" >\n                    <div class=\"container\">\n                        <div class=\"row\">\n                            <div class=\"col-12\">\n                                <div id=\"accordion-pills-2\" role=\"tablist\" aria-multiselectable=\"true\">\n                                    <div class=\"card\">\n                                        <div class=\"card-header\" role=\"tab\" id=\"section1HeaderId\">\n                                            <h2 class=\"mb-0\">\n                                                <a class=\"anchor-nav-content__tab--title\" data-toggle=\"collapse\" data-parent=\"#accordion-pills-2\" href=\"#accordion-content-2\" aria-expanded=\"true\" aria-controls=\"#accordion-content-2\">\n                                                    Technical Information\n                                                <\/a>\n                                            <\/h2>\n                                        <\/div>\n                                                                                                                                <div id=\"accordion-content-2\" class=\"in collapse show\" role=\"tabpanel\" aria-labelledby=\"section1HeaderId\">\n                                                <div class=\"card-body\">\n                                                    <div class=\"anchor-nav-content__tab--content\">\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <div class=\"row justify-content-center is_last\">\n                                                                        <div class=\"col-12 col-lg-10 col-xl-9 col-xxl-8\">\n                                                                            <div data-block_925e38f97e24fdd4f6a27f9e21f95914 class=\"ovivo-content-block block-generic-content__wrapper\">\n    <div class=\"container\">\n        <div class=\"row justify-content-center\">\n            <div class=\"col-12  \">\n                <div class=\"owrow\">\n                                            <div class=\"block-generic-content__single wysiwyg \">\n                                                                                        <p>All floor forms and nozzle components are molded or vacuum formed from durable ABS plastic and are NSF certified. Construction is quick and simple and uses standard construction techniques. Time-consuming placement and grouting of pre-cast underdrain sections is eliminated. Access to the final filter plenum is convenient with a pier spacing of 2&nbsp;ft by 4&nbsp;ft (0.6&nbsp;m by 1.2&nbsp;m).<\/p>\n\n                                                    <\/div>\n                                    <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n                                                                        <\/div>\n                                                                    <\/div>\n                                                                                                                                                                        <\/div>\n                                                <\/div>\n                                            <\/div><!--accordion-content-2-->\n                                                                                                                        <\/div>\n                                <\/div>\n                            <\/div>\n                        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         <div class=\" col-10 col-md-8 col-lg-3 owrelateprod-sec-1\">\n                            <a href=\"https:\/\/www.ovivowater.com\/en\/product\/scourguard-filter-troughs\/\" target=\"\" class=\"generic-tiles__single\">\n                                <div class=\"generic-tiles__single--image\" style=\"background-image:url(https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/PDP_Scourgard_735X551_002.webp)\"><\/div>\n                                <div class=\"generic-tiles__single--content\">\n                                    <div class=\"generic-tiles__single--title\">\n                                        Scourguard\u2122 Filter Troughs\n                                    <\/div>\n                                    <div class=\"generic-tiles__single--description\">\n                                        Scourguard Filter Troughs allow for sustained and simultaneous air scour and water backwashing of granular media filters.\n                                    <\/div>\n                                    <div class=\"generic-tiles__single--link\">\n                                        <span>Read more<\/span>\n                                        <i class=\"icon-ovivo-arrow\"><\/i>\n                                    <\/div>\n                                <\/div>\n                            <\/a>\n                        <\/div>\n                                        \n                    \n                                                   \n                    <\/div>\n    <\/div>\n                                                    <\/div>\n                                                <\/div>\n                                            <\/div>\n                                        <\/div>\n                                    <\/div>\n                                <\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n                        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class=\"generic-tiles__single--description\">\n                                            Ovivo offers its customers a complete life cycle support for its products, equipment and solutions.\n                                        <\/div>\n                                                                        <div class=\"generic-tiles__single--link\">\n                                        <span>Browse Resources<\/span>\n                                        <i class=\"icon-ovivo-arrow\"><\/i>\n                                    <\/div>\n                                <\/div>\n                            <\/a>\n                                                                    <\/div>\n                                \n                                                                                    <div class=\"col-12 col-lg-4 mb-4\">\n                                                    <a href=\"https:\/\/www.ovivowater.com\/en\/services\/product-rentals\/\" target=\"\" 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  Ovivo has over a century of experience! We&#8217;ve got you covered.\n                                        <\/div>\n                                                                        <div class=\"generic-tiles__single--link\">\n                                        <span>Contact an Expert<\/span>\n                                        <i class=\"icon-ovivo-arrow\"><\/i>\n                                    <\/div>\n                                <\/div>\n                            <\/a>\n                                                                    <\/div>\n                                    <\/div>\n    <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>CastKleen Underdrain is a cast-in-place media filter underdrain that supports filter media, collects filtered water, and evenly distributes backwash supply water and air. 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