{"product_id":"vontron-reverse-osmosis-membrane-ulp21-2540","title":"Vontron Reverse Osmosis Membrane ULP21-2540","description":"\u003ch1 data-start=\"475\" data-end=\"997\"\u003eVontron ULP21‑2540 \u003ca href=\"https:\/\/puritech.co.za\/product-category\/ro-membrane-elements\/vontron-membranes\/\"\u003eRO Membrane\u003c\/a\u003e – Ultra‑Low Pressure 2.5″×40″\u003c\/h1\u003e \u003cp data-start=\"475\" data-end=\"997\"\u003eThe Vontron ULP21‑2540 RO Membrane is part of the ULP (Ultra‑Low Pressure) series by Vontron. This \u003cstrong data-start=\"574\" data-end=\"589\"\u003eRO membrane\u003c\/strong\u003e is built for low‑TDS and municipal water applications, delivering reliable filtration with reduced operating pressure. Specifically, the ULP21‑2540 offers ~750 GPD (~2.8 m³\/day) nominal permeate flow and ~99% stable salt rejection in a compact 2.5″×40″ (2540) size. It’s ideal for applications where space is limited or where energy and pump cost reduction is required.\u003c\/p\u003e \u003ch3 data-start=\"1004\" data-end=\"1021\"\u003eKey Features\u003c\/h3\u003e \u003cul\u003e \u003cli data-start=\"1024\" data-end=\"1164\"\u003eUltra‑low pressure operation — works at roughly 2\/3 the pressure of standard low‑pressure membranes.\u003c\/li\u003e \u003cli data-start=\"1167\" data-end=\"1272\"\u003eCapacity: ~750 GPD and ~99% salt rejection under test conditions.\u003c\/li\u003e \u003cli data-start=\"1275\" data-end=\"1360\"\u003eCompact size: 2.5″ diameter × 40″ length fits smaller vessels and retrofit systems.\u003c\/li\u003e \u003cli data-start=\"1363\" data-end=\"1476\"\u003eDesigned for feedwater TDS \u0026lt; 2000 ppm (surface, underground, municipal).\u003c\/li\u003e \u003cli data-start=\"1479\" data-end=\"1611\"\u003eDurable design: Max operating pressure ~600 psi (~4.14 MPa) and feed temperature max ~45 °C.\u003c\/li\u003e \u003cli data-start=\"1618\" data-end=\"1647\"\u003eTechnical Specifications\u003c\/li\u003e \u003c\/ul\u003e \u003cdiv class=\"_tableContainer_1rjym_1\"\u003e \u003cdiv class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\"\u003e \u003ctable class=\"w-fit min-w-(--thread-content-width)\" data-start=\"1649\" data-end=\"2653\"\u003e \u003cthead data-start=\"1649\" data-end=\"1716\"\u003e \u003ctr data-start=\"1649\" data-end=\"1716\"\u003e \u003cth data-start=\"1649\" data-end=\"1681\" data-col-size=\"sm\"\u003eParameter\u003c\/th\u003e \u003cth data-start=\"1681\" data-end=\"1716\" data-col-size=\"md\"\u003eValue\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody data-start=\"1784\" data-end=\"2653\"\u003e \u003ctr data-start=\"1784\" data-end=\"1850\"\u003e \u003ctd data-start=\"1784\" data-end=\"1815\" data-col-size=\"sm\"\u003eModel\u003c\/td\u003e \u003ctd data-start=\"1815\" data-end=\"1850\" data-col-size=\"md\"\u003eULP21‑2540\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1851\" data-end=\"1941\"\u003e \u003ctd data-start=\"1851\" data-end=\"1882\" data-col-size=\"sm\"\u003eActive Membrane Area\u003c\/td\u003e \u003ctd data-start=\"1882\" data-end=\"1941\" data-col-size=\"md\"\u003e~30 ft² (~2.8 m²)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1942\" data-end=\"2037\"\u003e \u003ctd data-start=\"1942\" data-end=\"1973\" data-col-size=\"sm\"\u003eRated Permeate Flow\u003c\/td\u003e \u003ctd data-start=\"1973\" data-end=\"2037\" data-col-size=\"md\"\u003e~750 GPD (~2.8 m³\/day)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2038\" data-end=\"2104\"\u003e \u003ctd data-start=\"2038\" data-end=\"2069\" data-col-size=\"sm\"\u003eStable Salt Rejection Rate\u003c\/td\u003e \u003ctd data-start=\"2069\" data-end=\"2104\" data-col-size=\"md\"\u003e~99.0%\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2105\" data-end=\"2198\"\u003e \u003ctd data-start=\"2105\" data-end=\"2136\" data-col-size=\"sm\"\u003eMaximum Operating Pressure\u003c\/td\u003e \u003ctd data-start=\"2136\" data-end=\"2198\" data-col-size=\"md\"\u003e~600 psi (~4.14 MPa)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2199\" data-end=\"2265\"\u003e \u003ctd data-start=\"2199\" data-end=\"2230\" data-col-size=\"sm\"\u003eMaximum Feed Temperature\u003c\/td\u003e \u003ctd data-start=\"2230\" data-end=\"2265\" data-col-size=\"md\"\u003e~45 °C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2266\" data-end=\"2332\"\u003e \u003ctd data-start=\"2266\" data-end=\"2297\" data-col-size=\"sm\"\u003eMaximum SDI\u003c\/td\u003e \u003ctd data-start=\"2297\" data-end=\"2332\" data-col-size=\"md\"\u003e≤ 5\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2333\" data-end=\"2439\"\u003e \u003ctd data-start=\"2333\" data-end=\"2364\" data-col-size=\"sm\"\u003epH Range (Operation)\u003c\/td\u003e \u003ctd data-start=\"2364\" data-end=\"2439\" data-col-size=\"md\"\u003e3 – 10\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2440\" data-end=\"2546\"\u003e \u003ctd data-start=\"2440\" data-end=\"2471\" data-col-size=\"sm\"\u003epH Range (Cleaning)\u003c\/td\u003e \u003ctd data-start=\"2471\" data-end=\"2546\" data-col-size=\"md\"\u003e2 – 12\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2547\" data-end=\"2653\"\u003e \u003ctd data-start=\"2547\" data-end=\"2578\" data-col-size=\"sm\"\u003eMax Free Chlorine in Feed\u003c\/td\u003e \u003ctd data-start=\"2578\" data-end=\"2653\" data-col-size=\"md\"\u003e\u0026lt; 0.1 ppm\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003c\/div\u003e \u003ch3 data-start=\"2660\" data-end=\"2711\"\u003eWhy Choose the Vontron ULP21‑2540 RO Membrane?\u003c\/h3\u003e \u003cp data-start=\"2712\" data-end=\"3111\"\u003eIf you’re looking for a compact membrane that offers strong performance with lower system pressure and energy cost, the Vontron ULP21‑2540 fits the bill. Because the element is designed for municipal or low‑salinity sources, you avoid the expense of higher‑pressure systems and oversized equipment. Moreover, its standard 2.5″×40″ size makes it easy to integrate into smaller or retrofit RO vessels.\u003c\/p\u003e \u003ch3 data-start=\"3118\" data-end=\"3154\"\u003eInstallation \u0026amp; Maintenance Tips\u003c\/h3\u003e \u003col\u003e \u003cli data-start=\"3158\" data-end=\"3248\"\u003eEnsure proper pre‑treatment: feed water should meet SDI ≤ 5 and free chlorine \u0026lt; 0.1 ppm.\u003c\/li\u003e \u003cli data-start=\"3252\" data-end=\"3435\"\u003eOn first use, flush the new membrane: 15‑25 minutes at low pressure, then 60‑90 minutes at full pressure; discard the first hour of permeate. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003ca class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-[9px] font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-[#F4F4F4]! dark:bg-[#303030]!\" href=\"https:\/\/vontron.com.tr\/wp-content\/uploads\/2024\/12\/ULP21-25401.pdf?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan class=\"relative start-0 bottom-0 flex h-full w-full items-center\"\u003e\u003cspan class=\"flex h-4 w-full items-center justify-between overflow-hidden\"\u003e\u003cspan class=\"max-w-[15ch] grow truncate overflow-hidden text-center\"\u003eVontron Türkiye\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e \u003cli data-start=\"3439\" data-end=\"3530\"\u003eMonitor permeate flow and salt rejection; a drop may indicate fouling or membrane damage.\u003c\/li\u003e \u003cli data-start=\"3534\" data-end=\"3625\"\u003eClean according to manufacturer guidelines; always stay within pH and temperature limits.\u003c\/li\u003e \u003cli data-start=\"3629\" data-end=\"3733\"\u003eStore spare membranes wet or in preservative solution (for example, 1% sodium bisulfite) when not in use.\u003c\/li\u003e \u003c\/ol\u003e","brand":"Monster Mechanical","offers":[{"title":"Default","offer_id":45115709161541,"sku":"ULP21-2540","price":1794.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/8627\/7445\/files\/2540-industrial-reverse-osmosis-membrane_a4f4f2be-4fa5-4656-97a7-6c28926b2248.jpg?v=1780903312","url":"https:\/\/unzgxg-iv.myshopify.com\/products\/vontron-reverse-osmosis-membrane-ulp21-2540","provider":"Monster Mechanical","version":"1.0","type":"link"}