{"product_id":"c-9431-unicel-cartridge-for-aquastar-plf35000-filter-pf35000","title":"C-9431 | Unicel Cartridge For AquaStar PLF35000 Filter | PF35000","description":"\u003cp data-start=\"133\" data-end=\"939\"\u003eThe Unicel C-9431 is a high-capacity cartridge filter element designed for the AquaStar Pipeline PLF35000filter system serving as a direct replacement for the PF35000 cartridge. It offers approximately 250 sq ft of premium pleated filtration media and is built to OEM specifications to restore optimal flow, clarity and operational efficiency for large residential or commercial pools. Compatible as a direct replacement for AquaStar part numbers PF35000 \/ PLF35000. The heavy-duty design and Reemay® spun-bond media enable longer cleaning cycles and improved filtration performance compared to worn cartridges.\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 href=\"https:\/\/poolsupplydepot.net\/products\/226-sq-ft-aquastar-pf35000rep-c-9431?srsltid=AfmBOoomndWCdksV4-Ju9w8BuyoMCL58_rWpGbBoFPqN-YSRo1F2trTJ\u0026amp;utm_source=chatgpt.com\" rel=\"noopener\" alt=\"https:\/\/poolsupplydepot.net\/products\/226-sq-ft-aquastar-pf35000rep-c-9431?srsltid=AfmBOoomndWCdksV4-Ju9w8BuyoMCL58_rWpGbBoFPqN-YSRo1F2trTJ\u0026amp;utm_source=chatgpt.com\" 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]!\" target=\"_blank\"\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\"\u003e\u003cspan class=\"-me-1 flex h-full items-center rounded-full px-1 text-[#8F8F8F]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e Ideal for pool professionals and serious homeowners looking to maintain peak filtration in high-flow, high-capacity systems.\u003c\/p\u003e\n\u003ch3 data-start=\"946\" data-end=\"962\"\u003eHighlights\u003c\/h3\u003e\n\u003cul data-start=\"963\" data-end=\"1962\"\u003e\n\u003cli data-start=\"963\" data-end=\"1171\"\u003e\n\u003cp data-start=\"965\" data-end=\"1171\"\u003e\u003cstrong data-start=\"965\" data-end=\"996\"\u003eOEM-Compatible Replacement:\u003c\/strong\u003e Built to match AquaStar PF35000 \/ PLF35000 filter systems and Unicel’s original C-9431 model number for a precise fit and performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1172\" data-end=\"1383\"\u003e\n\u003cp data-start=\"1174\" data-end=\"1383\"\u003e\u003cstrong data-start=\"1174\" data-end=\"1209\"\u003eLarge Filter Area (~250 sq ft):\u003c\/strong\u003e Provides extensive filtration surface to capture fine debris and extend cleaning intervals in large pools or heavy-use installations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1384\" data-end=\"1600\"\u003e\n\u003cp data-start=\"1386\" data-end=\"1600\"\u003e\u003cstrong data-start=\"1386\" data-end=\"1417\"\u003eDurable Media Construction:\u003c\/strong\u003e Uses high-quality Reemay® spun-bond polyester pleats engineered for long life, easier cleaning and reliable performance under pool conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1601\" data-end=\"1782\"\u003e\n\u003cp data-start=\"1603\" data-end=\"1782\"\u003e\u003cstrong data-start=\"1603\" data-end=\"1637\"\u003eEnhances Water Clarity \u0026amp; Flow:\u003c\/strong\u003e By replacing a worn cartridge with the C-9431, users restore proper flow rates and filtration efficiency—helping maintain crystal-clear water.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1783\" data-end=\"1962\"\u003e\n\u003cp data-start=\"1785\" data-end=\"1962\"\u003e\u003cstrong data-start=\"1785\" data-end=\"1825\"\u003eProfessional Grade Service Solution:\u003c\/strong\u003e Designed for large or commercial-scale pools but entirely serviceable by experienced homeowners seeking top-tier filtration reliability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e(1)\u003c\/strong\u003e Unicel C-9431 Cartridge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAquaStar PLF35000 Pipeline Filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"36\" data-end=\"57\"\u003eAdditional Info\u003c\/h3\u003e\n\u003cp data-start=\"58\" data-end=\"333\"\u003eThe Unicel C-9431 Filter Cartridge is a premium 250 sq. ft. replacement element for AquaStar Pipeline PLF35000 and PF35000 filter systems. This section provides compatibility guidance, maintenance tips, and in-store recommendations for ensuring optimal fit and performance.\u003c\/p\u003e\n\u003ch2 data-start=\"335\" data-end=\"365\"\u003eCompatibility and Fitment\u003c\/h2\u003e\n\u003cp data-start=\"366\" data-end=\"608\"\u003eBuilt to Unicel and AquaStar OEM specifications, the C-9431 restores filtration efficiency in high-capacity residential and commercial pools. It’s designed to replace the AquaStar PF35000 or PLF35000 cartridge directly without modification.\u003c\/p\u003e\n\u003ch4 data-start=\"610\" data-end=\"689\"\u003eHow can I confirm my AquaStar Pipeline filter uses the C-9431 cartridge?\u003c\/h4\u003e\n\u003ch4 data-start=\"690\" data-end=\"763\"\u003eWill this cartridge fit both PF35000 and PLF35000 filter housings?\u003c\/h4\u003e\n\u003ch4 data-start=\"764\" data-end=\"844\"\u003eCan I bring my old filter element in store to verify height and diameter?\u003c\/h4\u003e\n\u003ch4 data-start=\"845\" data-end=\"939\"\u003eDoes Discount Pool Mart carry AquaStar end caps or filter cleaning kits for this model?\u003c\/h4\u003e\n\u003ch4 data-start=\"940\" data-end=\"1015\"\u003eAre compatible O-rings or manifolds available for in-store purchase?\u003c\/h4\u003e\n\u003ch2 data-start=\"1017\" data-end=\"1056\"\u003eInstallation and Cleaning Guidance\u003c\/h2\u003e\n\u003cp data-start=\"1057\" data-end=\"1252\"\u003eInstalling the C-9431 is simple—remove the old element, rinse the filter housing, and drop in the new cartridge. The Reemay® pleats resist collapse, allowing longer intervals between cleanings.\u003c\/p\u003e\n\u003ch4 data-start=\"1254\" data-end=\"1338\"\u003eHow often should I clean or replace the Unicel C-9431 in a large pool system?\u003c\/h4\u003e\n\u003ch4 data-start=\"1339\" data-end=\"1406\"\u003eWhat’s the proper cleaning method for Reemay® pleated media?\u003c\/h4\u003e\n\u003ch4 data-start=\"1407\" data-end=\"1476\"\u003eCan I use mild acid or cartridge cleaner for deep maintenance?\u003c\/h4\u003e\n\u003ch4 data-start=\"1477\" data-end=\"1556\"\u003eHow do I check for leaks or alignment before closing the filter housing?\u003c\/h4\u003e\n\u003ch4 data-start=\"1557\" data-end=\"1641\"\u003eCan store staff assist with finding compatible AquaStar filter parts on-site?\u003c\/h4\u003e\n\u003ch2 data-start=\"1643\" data-end=\"1673\"\u003ePerformance and Longevity\u003c\/h2\u003e\n\u003cp data-start=\"1674\" data-end=\"1860\"\u003eThe C-9431’s expanded 250 sq. ft. surface area supports higher flow rates and improved debris capture. When maintained properly, it provides clear water and efficient system operation.\u003c\/p\u003e\n\u003ch4 data-start=\"1862\" data-end=\"1946\"\u003eHow much pressure drop indicates it’s time to clean or replace the cartridge?\u003c\/h4\u003e\n\u003ch4 data-start=\"1947\" data-end=\"2031\"\u003eDoes the Reemay® fabric maintain flow performance after multiple wash cycles?\u003c\/h4\u003e\n\u003ch4 data-start=\"2032\" data-end=\"2104\"\u003eCan this cartridge handle both saltwater and chlorinated systems?\u003c\/h4\u003e\n\u003ch4 data-start=\"2105\" data-end=\"2181\"\u003eWhat lifespan should I expect from the C-9431 under regular pool use?\u003c\/h4\u003e\n\u003ch4 data-start=\"2182\" data-end=\"2269\"\u003eCan I buy additional Unicel cartridges in store for backup maintenance rotation?\u003c\/h4\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":50891848778016,"sku":"C-9431","price":145.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/3326\/9536\/files\/C-9431UnicelCartridgeForAquaStarPLF35000FilterPF35000DiscountPoolMart_3.jpg?v=1769802951","url":"https:\/\/discountpoolmart.com\/products\/c-9431-unicel-cartridge-for-aquastar-plf35000-filter-pf35000","provider":"Discount Pool Mart","version":"1.0","type":"link"}