{"product_id":"pt-4-0-5-5-stage-certified-36-gpd-reverse-osmosis-system-copy","title":"PT-4.0\/5 – 5-Stage Certified 36 GPD Reverse Osmosis System","description":"\u003ch2\u003ePT-4.0\/5 – 5-Stage Certified 36 GPD Reverse Osmosis System\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe PT-4.0\/5\u003c\/strong\u003e is a certified 5-stage residential reverse osmosis system engineered to deliver clean, great-tasting drinking water directly from your tap. Rated at \u003cstrong\u003e36 gallons per day (GPD)\u003c\/strong\u003e, this under-sink system provides enhanced pre-filtration for improved chlorine reduction and membrane protection.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe PT-4.0\/5 expands on the standard 4-stage design by adding an additional carbon filtration stage before the RO membrane. This extra layer improves chlorine reduction, protects the membrane from chemical damage, and enhances overall system longevity.\u003c\/p\u003e\n\u003cp\u003eDesigned for residential kitchen installations, this system includes a \u003cstrong\u003e4-gallon storage tank\u003c\/strong\u003e, standard 2.5” × 10” filter housings, and complete installation hardware for reliable, long-term performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFiltration Stages\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage 1:\u003c\/strong\u003e 5-Micron Sediment Filter – Removes dirt, rust, and suspended solids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage 2:\u003c\/strong\u003e Carbon Block Filter – Reduces chlorine, taste, and odor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage 3:\u003c\/strong\u003e Additional Carbon Filtration – Further chlorine and chemical reduction for enhanced membrane protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage 4:\u003c\/strong\u003e 36 GPD TFC RO Membrane – Reduces dissolved solids and a wide range of contaminants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStage 5:\u003c\/strong\u003e Inline Post Carbon Filter – Final polishing stage for improved taste before dispensing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eSystem Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduction Capacity: 36 Gallons Per Day (GPD)\u003c\/li\u003e\n\u003cli\u003eMembrane Type: TFC Reverse Osmosis\u003c\/li\u003e\n\u003cli\u003eFilter Housing Size: 2.5” × 10” standard housings\u003c\/li\u003e\n\u003cli\u003eTank Size: 4-Gallon Storage Tank\u003c\/li\u003e\n\u003cli\u003eConnections: 1\/4” Jaco compression fittings\u003c\/li\u003e\n\u003cli\u003eInstallation Hardware: Included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eMaintenance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReplacement Filter Kit: \u003cstrong\u003eFK-101\u003c\/strong\u003e (for annual pre\/post filter replacement)\u003c\/li\u003e\n\u003cli\u003eReplacement Membrane: \u003cstrong\u003eMA-4202 (36 GPD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRecommended Filter Replacement: Every 6–12 months\u003c\/li\u003e\n\u003cli\u003eMembrane Replacement: Typically every 2–3 years depending on water quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eResidential under-sink installations\u003c\/li\u003e\n\u003cli\u003eHomes with moderate chlorine levels\u003c\/li\u003e\n\u003cli\u003eCustomers seeking enhanced membrane protection\u003c\/li\u003e\n\u003cli\u003eUsers wanting improved taste and odor reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e📄 \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0911\/2184\/4589\/files\/Vertex_PT_4.0_5.pdf?v=1772493189\" target=\"_blank\" rel=\"noopener\"\u003eDownload PT-4.0\/5 Manual\u003c\/a\u003e\u003c\/p\u003e","brand":"Vertex","offers":[{"title":"Default Title","offer_id":53065999909229,"sku":"PT-4.0\/5","price":280.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0911\/2184\/4589\/files\/PT405.png?v=1772492563","url":"https:\/\/humboldtwatersystems.com\/products\/pt-4-0-5-5-stage-certified-36-gpd-reverse-osmosis-system-copy","provider":"Humboldt Water Systems ","version":"1.0","type":"link"}