{"product_id":"cartridge4-5x20bv-polyphos","title":"CARTRIDGE4.5X20BV POLYPHOS","description":"\u003ch3 data-section-id=\"8e0lu4\" data-start=\"429\" data-end=\"453\"\u003e🧾 Breaking it down:\u003c\/h3\u003e\n\u003cul data-start=\"454\" data-end=\"710\"\u003e\n\u003cli data-section-id=\"105h05j\" data-start=\"454\" data-end=\"503\"\u003e\n\u003cstrong data-start=\"456\" data-end=\"469\"\u003eCARTRIDGE\u003c\/strong\u003e → Replaceable filter media unit\u003c\/li\u003e\n\u003cli data-section-id=\"1fla36l\" data-start=\"504\" data-end=\"566\"\u003e\n\u003cstrong data-start=\"506\" data-end=\"518\"\u003e4.5 × 20\u003c\/strong\u003e → Standard “Big Blue” whole-house filter size\u003c\/li\u003e\n\u003cli data-section-id=\"1ewokze\" data-start=\"567\" data-end=\"657\"\u003e\n\u003cstrong data-start=\"569\" data-end=\"575\"\u003eBV\u003c\/strong\u003e → Manufacturer variant code (often “blue\/vessel” or brand-specific designation)\u003c\/li\u003e\n\u003cli data-section-id=\"t9w5s9\" data-start=\"658\" data-end=\"710\"\u003e\n\u003cstrong data-start=\"660\" data-end=\"672\"\u003ePOLYPHOS\u003c\/strong\u003e → Polyphosphate scale control media\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"712\" data-end=\"715\"\u003e\n\u003ch3 data-section-id=\"c5okp3\" data-start=\"717\" data-end=\"743\"\u003e🔧 What it’s used for:\u003c\/h3\u003e\n\u003cp data-start=\"744\" data-end=\"806\"\u003eThis cartridge is installed in a \u003cstrong data-start=\"777\" data-end=\"802\"\u003efilter housing system\u003c\/strong\u003e to:\u003c\/p\u003e\n\u003cul data-start=\"807\" data-end=\"1039\"\u003e\n\u003cli data-section-id=\"otjkzb\" data-start=\"807\" data-end=\"867\"\u003ePrevent \u003cstrong data-start=\"817\" data-end=\"865\"\u003ehard water scale buildup (calcium\/magnesium)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1bt79yz\" data-start=\"868\" data-end=\"994\"\u003eProtect:\n\u003cul data-start=\"881\" data-end=\"994\"\u003e\n\u003cli data-section-id=\"yn60e9\" data-start=\"881\" data-end=\"898\"\u003eWater heaters\u003c\/li\u003e\n\u003cli data-section-id=\"hg31s4\" data-start=\"901\" data-end=\"912\"\u003eBoilers\u003c\/li\u003e\n\u003cli data-section-id=\"sp6qdt\" data-start=\"915\" data-end=\"931\"\u003eIce machines\u003c\/li\u003e\n\u003cli data-section-id=\"93mqig\" data-start=\"934\" data-end=\"962\"\u003eCoffee\/vending equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1s6zee9\" data-start=\"965\" data-end=\"994\"\u003ePlumbing pipes and valves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1pwpsjd\" data-start=\"995\" data-end=\"1039\"\u003eReduce corrosion in metal piping systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1041\" data-end=\"1044\"\u003e\n\u003ch3 data-section-id=\"drbnw5\" data-start=\"1046\" data-end=\"1066\"\u003e⚙️ How it works:\u003c\/h3\u003e\n\u003cul data-start=\"1067\" data-end=\"1300\"\u003e\n\u003cli data-section-id=\"1ox5ufo\" data-start=\"1067\" data-end=\"1133\"\u003eContains \u003cstrong data-start=\"1078\" data-end=\"1131\"\u003eslow-dissolving food-grade polyphosphate crystals\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1kcjsmv\" data-start=\"1134\" data-end=\"1178\"\u003eThese bind (sequester) hardness minerals\u003c\/li\u003e\n\u003cli data-section-id=\"1xaui4m\" data-start=\"1179\" data-end=\"1244\"\u003ePrevent minerals from forming hard scale deposits on surfaces\u003c\/li\u003e\n\u003cli data-section-id=\"18vdtlb\" data-start=\"1245\" data-end=\"1300\"\u003eAlso forms a thin protective film on metal surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1302\" data-end=\"1305\"\u003e\n\u003ch3 data-section-id=\"oowtmi\" data-start=\"1307\" data-end=\"1327\"\u003e⚙️ Key features:\u003c\/h3\u003e\n\u003cul data-start=\"1328\" data-end=\"1588\"\u003e\n\u003cli data-section-id=\"me4bcx\" data-start=\"1328\" data-end=\"1378\"\u003eFits standard \u003cstrong data-start=\"1344\" data-end=\"1376\"\u003e4.5\" × 20\" Big Blue housings\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1kpnk0a\" data-start=\"1379\" data-end=\"1455\"\u003eTypically rated for \u003cstrong data-start=\"1401\" data-end=\"1453\"\u003ecommercial or whole-house flow rates (~5–10 GPM)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1f88ix1\" data-start=\"1456\" data-end=\"1513\"\u003eNSF\/FDA-grade materials in potable water applications\u003c\/li\u003e\n\u003cli data-section-id=\"eecvrz\" data-start=\"1514\" data-end=\"1588\"\u003eTypical service life: ~3–6 months depending on water hardness and flow\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CANATURE NORTH AMERICA","offers":[{"title":"Default Title","offer_id":52411316928801,"sku":"36201","price":56.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1905\/1041\/files\/download_fcc34197-9050-4d3d-a207-c22b22e46be2.jpg?v=1778186054","url":"https:\/\/standardvmi.com\/products\/cartridge4-5x20bv-polyphos","provider":"Standard Plumbing Supply","version":"1.0","type":"link"}