{"product_id":"imperial-berkey-water-filter","title":"Imperial Berkey® Water Filter – 4.5 Gal Gravity-Fed Filtration System","description":"\u003cstyle\u003e\n.tb-imperial-product{\n  display:block !important;\n  width:100% !important;\n  max-width:100% !important;\n  margin:0 !important;\n  padding:0 !important;\n  color:#263238 !important;\n  font-family:inherit !important;\n  font-size:16px !important;\n  line-height:1.7 !important;\n}\n.tb-imperial-product,\n.tb-imperial-product *{box-sizing:border-box !important}\n.tb-imperial-product h2{\n  display:block !important;\n  margin:0 0 14px !important;\n  padding:0 !important;\n  color:#263238 !important;\n  font-size:30px !important;\n  line-height:1.3 !important;\n  font-weight:700 !important;\n  text-transform:none !important;\n  letter-spacing:normal !important;\n}\n.tb-imperial-product h3{\n  display:block !important;\n  margin:26px 0 12px !important;\n  padding:0 !important;\n  color:#263238 !important;\n  font-size:21px 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class=\"tb-imperial-product\"\u003e\n\u003ch2\u003eImperial Berkey® Water Filter System – High-Capacity Stainless Steel Gravity-Fed Filtration\u003c\/h2\u003e\n\u003cp class=\"tb-imperial-product__lead\"\u003eThe Imperial Berkey® Water Filter System is a high-capacity gravity-fed countertop system designed for larger households, offices, and shared spaces that use more filtered drinking water throughout the day.\u003c\/p\u003e\n\u003cp\u003eWith a \u003cstrong\u003e4.5-gallon capacity\u003c\/strong\u003e, the Imperial Berkey® provides substantially more stored water than smaller Berkey® systems while maintaining simple operation without electricity, plumbing, or water pressure.\u003c\/p\u003e\n\u003cp\u003eConstructed from highly polished \u003cstrong\u003eAISI 304 stainless steel\u003c\/strong\u003e, the Imperial Berkey® combines capacity, durability, and an expandable filter configuration in a system designed for everyday use.\u003c\/p\u003e\n\u003cp\u003eThe current configuration includes \u003cstrong\u003e2 Black Berkey® Elements\u003c\/strong\u003e and can accommodate up to \u003cstrong\u003e6 compatible primary filter elements\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e*Due to state regulations, this product is not available for sale in \u003ca href=\"\/pages\/why-some-berkey-products-are-not-available-in-california\"\u003eCalifornia\u003c\/a\u003e or \u003ca href=\"\/pages\/why-berkey-systems-are-not-available-in-iowa\"\u003eIowa\u003c\/a\u003e.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"tb-imperial-product__highlights\"\u003e\n\u003cdiv class=\"tb-imperial-product__highlight\"\u003e\n\u003cstrong\u003eCapacity\u003c\/strong\u003e4.5 gallons \/ 17 liters\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__highlight\"\u003e\n\u003cstrong\u003eEveryday-use guidance\u003c\/strong\u003e4–8 people\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__highlight\"\u003e\n\u003cstrong\u003eIncluded\u003c\/strong\u003e2 Black Berkey® Elements\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__highlight\"\u003e\n\u003cstrong\u003eExpandable to\u003c\/strong\u003eUp to 6 compatible primary elements\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003ch2\u003eDesigned for Larger Daily Water Usage\u003c\/h2\u003e\n\u003cp\u003eThe Imperial Berkey® is well-suited to households and workplaces that use filtered water throughout the day for drinking, cooking, coffee, tea, and for filling reusable water bottles.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4.5-gallon storage capacity\u003c\/li\u003e\n\u003cli\u003eManufacturer everyday-use guidance for approximately 4–8 people\u003c\/li\u003e\n\u003cli\u003eReduced refill frequency compared with smaller Berkey® systems\u003c\/li\u003e\n\u003cli\u003eUseful for shared kitchens, offices, and larger households\u003c\/li\u003e\n\u003cli\u003eExpandable to as many as 6 compatible primary filter elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor customers who want more capacity than the Royal Berkey® but do not need the 6-gallon Crown Berkey™, the Imperial Berkey® offers a strong balance of capacity, footprint, and expandable flow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003ch2\u003eHow the Imperial Berkey® Works\u003c\/h2\u003e\n\u003cp\u003eThe Imperial Berkey® uses gravity to move water from the upper chamber through the installed primary filter elements. Filtered water collects in the lower chamber and is dispensed through the spigot.\u003c\/p\u003e\n\u003cp\u003eNo electricity, plumbing, water pressure, or permanent installation is required.\u003c\/p\u003e\n\u003ch3\u003eIncluded Black Berkey® Elements\u003c\/h3\u003e\n\u003cp\u003eThe current Imperial Berkey® configuration includes \u003cstrong\u003e2 Black Berkey® Elements\u003c\/strong\u003e and can accommodate up to \u003cstrong\u003e6 compatible primary elements\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIndependent Black Berkey® laboratory documentation reports reduction performance for a range of drinking-water substances, including selected heavy metals, chlorine-related compounds, VOCs, pharmaceuticals, petroleum-related compounds, particulates, and other substances under the documented test conditions.\u003c\/p\u003e\n\u003cp\u003eBecause Black Berkey® Elements are not designed as a reverse-osmosis or demineralization system, ordinary dissolved minerals such as calcium and magnesium generally remain in the water.\u003c\/p\u003e\n\u003cp\u003eA pair of Black Berkey® Elements has a manufacturer-recommended replacement interval of up to approximately \u003cstrong\u003e6,000 gallons\u003c\/strong\u003e under stated conditions. Actual service life may be shorter depending on source water quality and use.\u003c\/p\u003e\n\u003cdiv class=\"tb-imperial-product__callout\"\u003e\n\u003cstrong\u003eReplacement-filter note:\u003c\/strong\u003e This Imperial Berkey® configuration currently includes Black Berkey® Elements. When replacement elements are eventually needed, review the replacement options available at that time. \u003ca href=\"\/products\/phoenix-gravity-new-millennium-edition-filter-elements\"\u003ePhoenix Gravity New Millennium Edition™ Filter Elements\u003c\/a\u003e are currently compatible with the Imperial Berkey® and are the primary replacement option available through normal authorized U.S. distribution.\u003c\/div\u003e\n\u003cp\u003eFor current compatibility information, visit our \u003ca href=\"\/pages\/replacement-filters-for-berkey\"\u003eReplacement Filters Guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eCurrent NSF Certification for Phoenix Elements\u003c\/h3\u003e\n\u003cp\u003eThe Phoenix Gravity New Millennium Edition Filter Element \u003cstrong\u003ePGF9-2 itself is NSF\/ANSI 42 certified\/listed for chlorine reduction\u003c\/strong\u003e. This element-level certification applies to the PGF9-2 cartridge itself and is separate from Berkey® system-level listings.\u003c\/p\u003e\n\u003cdiv class=\"tb-imperial-product__callout\"\u003e\n\u003cstrong\u003eImportant certification distinction:\u003c\/strong\u003e The Imperial Berkey® is compatible with Phoenix Gravity New Millennium Edition™ Filter Elements, but the \u003cstrong\u003eImperial Berkey® is not currently one of the Berkey® system configurations listed by NSF under the Phoenix system listings\u003c\/strong\u003e. The current New Millennium Concepts system listings identify Travel Berkey®, Big Berkey®, and Royal Berkey® configurations featuring Phoenix elements under NSF\/ANSI 42 and NSF\/ANSI\/CAN 372.\u003c\/div\u003e\n\u003cp\u003eFor that reason, it is accurate to state that a Phoenix PGF9-2 element used in an Imperial Berkey® carries its own applicable NSF\/ANSI 42 element certification, but the Imperial Berkey® configuration itself should \u003cstrong\u003enot\u003c\/strong\u003e be described as NSF\/ANSI 42 or NSF\/ANSI\/CAN 372 certified unless NSF adds that exact system configuration to its official listings.\u003c\/p\u003e\n\u003cp\u003ePFAS, lead reduction, chloramine, heavy metals, VOCs, and other contaminant-reduction information for Phoenix elements comes from separate, independent laboratory testing unless a specific NSF listing identifies that claim.\u003c\/p\u003e\n\u003cp\u003eVerify the current listings directly in the \u003ca href=\"https:\/\/info.nsf.org\/Certified\/DWTU\/Listings.asp?TradeName=phoenix\u0026amp;hdModlStd=ModlStd\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eNSF Phoenix element listing\u003c\/a\u003e, the \u003ca href=\"https:\/\/info.nsf.org\/Certified\/DWTU\/Listings.asp?Company=C0895319\u0026amp;Standard=042\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eNSF\/ANSI 42 Berkey® system listing\u003c\/a\u003e, and the \u003ca href=\"https:\/\/info.nsf.org\/Certified\/Lead_Content\/Listings.asp?Company=C0895319\u0026amp;Standard=372-DWTU\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eNSF\/ANSI\/CAN 372 Berkey® system listing\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003ch2\u003eOptional PF-2® Fluoride \u0026amp; Arsenic Reduction Elements\u003c\/h2\u003e\n\u003cp\u003eThe Imperial Berkey® can accommodate up to \u003cstrong\u003e6 optional PF-2® Fluoride \u0026amp; Arsenic Reduction Elements\u003c\/strong\u003e when used with compatible primary filter elements. Install one PF-2 for each compatible primary element.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/products\/berkey-fluoride-removal-water-filter-pf2-set-of-2\"\u003eView PF-2® Fluoride \u0026amp; Arsenic Reduction Elements\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"tb-imperial-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eModel\u003c\/th\u003e\n\u003ctd\u003eImperial Berkey® Water Filter System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCapacity\u003c\/th\u003e\n\u003ctd\u003e4.5 gallons (17 liters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e10 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight in use\u003c\/th\u003e\n\u003ctd\u003e26 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eNested height\u003c\/th\u003e\n\u003ctd\u003e17 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEmpty weight\u003c\/th\u003e\n\u003ctd\u003eApproximately 10 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eAISI 304 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eIncluded Black Berkey® Elements\u003c\/th\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaximum compatible primary elements\u003c\/th\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaximum PF-2® Elements\u003c\/th\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eManufacturer everyday-use guidance\u003c\/th\u003e\n\u003ctd\u003eApproximately 4–8 people\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003ch2\u003eFlow Rate \u0026amp; Expandability\u003c\/h2\u003e\n\u003cdiv class=\"tb-imperial-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eConfiguration\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eMaximum Flow Rate\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 Black Berkey® Elements\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUp to 5.5 gallons per hour\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 Black Berkey® Elements\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUp to 11 gallons per hour\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6 Black Berkey® Elements\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUp to 16.5 gallons per hour\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eAdding compatible primary elements increases available filtration surface and can increase maximum flow. Manufacturer maximum flow figures are measured with the upper chamber full.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eFlow naturally decreases as the water level drops and can also vary with element condition, source-water quality, priming, and maintenance.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003ch2\u003eRoyal Berkey® vs. Imperial Berkey®\u003c\/h2\u003e\n\u003cp\u003eBoth systems are designed for everyday household use. The Imperial provides more stored-water capacity and greater expandable flow for households with higher daily demand.\u003c\/p\u003e\n\u003cdiv class=\"tb-imperial-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eFeature\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eRoyal Berkey®\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eImperial Berkey®\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCapacity\u003c\/th\u003e\n\u003ctd\u003e3.25 gallons\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e4.5 gallons\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e9.5 inches\u003c\/td\u003e\n\u003ctd\u003e10 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight in use\u003c\/th\u003e\n\u003ctd\u003e23 inches\u003c\/td\u003e\n\u003ctd\u003e26 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEveryday-use guidance\u003c\/th\u003e\n\u003ctd\u003e2–4 people\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e4–8 people\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaximum primary elements\u003c\/th\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e6\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaximum stated flow\u003c\/th\u003e\n\u003ctd\u003eUp to 7 GPH\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUp to 16.5 GPH\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMain reason to choose\u003c\/th\u003e\n\u003ctd\u003eSmaller footprint\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMore capacity and expandable flow\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpper AISI 304 stainless steel chamber\u003c\/li\u003e\n\u003cli\u003eLower AISI 304 stainless steel chamber\u003c\/li\u003e\n\u003cli\u003e2 Black Berkey® Elements\u003c\/li\u003e\n\u003cli\u003eStainless steel lid\u003c\/li\u003e\n\u003cli\u003eStandard spigot\u003c\/li\u003e\n\u003cli\u003e2 washers\u003c\/li\u003e\n\u003cli\u003e2 wing nuts\u003c\/li\u003e\n\u003cli\u003e1 priming button\u003c\/li\u003e\n\u003cli\u003eBlocking plugs for unused element openings\u003c\/li\u003e\n\u003cli\u003eRubber base gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003ch2\u003eWhy Choose the Imperial Berkey®?\u003c\/h2\u003e\n\u003ch3\u003e4.5-Gallon Capacity\u003c\/h3\u003e\n\u003cp\u003eThe Imperial provides substantially more stored water than smaller Berkey® systems, helping reduce refill frequency in higher-use households and shared spaces.\u003c\/p\u003e\n\u003ch3\u003eDesigned for 4–8 People\u003c\/h3\u003e\n\u003cp\u003eManufacturer everyday-use guidance places the Imperial at approximately 4–8 people, making it a practical choice for larger households and workplaces.\u003c\/p\u003e\n\u003ch3\u003eExpandable to Six Elements\u003c\/h3\u003e\n\u003cp\u003eThe system starts with two Black Berkey® Elements and supports up to six compatible primary filter elements.\u003c\/p\u003e\n\u003ch3\u003eUp to 16.5 GPH Maximum Flow\u003c\/h3\u003e\n\u003cp\u003eWith six Black Berkey® Elements and a full upper chamber, the manufacturer lists a maximum flow rate of up to 16.5 gallons per hour.\u003c\/p\u003e\n\u003ch3\u003eGravity-Fed Convenience\u003c\/h3\u003e\n\u003cp\u003eNo electricity, plumbing, or water pressure is required for normal operation.\u003c\/p\u003e\n\u003ch3\u003eStainless Steel Construction\u003c\/h3\u003e\n\u003cp\u003eHighly polished AISI 304 stainless steel provides a durable, reusable housing for the countertop.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003ch2\u003eWho Is the Imperial Berkey® Best For?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLarger households\u003c\/li\u003e\n\u003cli\u003eShared households\u003c\/li\u003e\n\u003cli\u003eOffices and break rooms\u003c\/li\u003e\n\u003cli\u003eHomes that use filtered water throughout the day\u003c\/li\u003e\n\u003cli\u003eCustomers who want more capacity than the Royal Berkey®\u003c\/li\u003e\n\u003cli\u003eCustomers who want substantial capacity without moving to the 6-gallon Crown Berkey™\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003ch2\u003eCare \u0026amp; Maintenance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePrime filter elements according to the current instructions before first use.\u003c\/li\u003e\n\u003cli\u003eUse cold or room-temperature water only.\u003c\/li\u003e\n\u003cli\u003eDo not use salt water.\u003c\/li\u003e\n\u003cli\u003eClean the stainless steel chambers periodically with mild soap and water.\u003c\/li\u003e\n\u003cli\u003eMonitor flow and clean compatible filter elements according to their current care instructions.\u003c\/li\u003e\n\u003cli\u003eReplace elements according to the applicable gallon guidance, source-water conditions, and current manufacturer instructions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"tb-imperial-product__warning\"\u003e\n\u003cstrong\u003eSalt-based softened water:\u003c\/strong\u003e Manufacturer guidance states that softened water can prematurely clog compatible filter elements and may void applicable warranty coverage. If a salt-based water softener is installed, review our \u003ca href=\"\/pages\/faqs#Can%20I%20use%20the%20Berkey%20system%20with%20softened%20water\"\u003esoftened-water FAQ\u003c\/a\u003e before use.\u003c\/div\u003e\n\u003cp\u003eThe stainless steel Berkey® chambers are assembled in the USA from U.S. and imported parts. Black Berkey® Elements are made and assembled in the USA.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003ch2\u003eCompare Berkey® System Sizes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/travel-berkey-water-filter\"\u003eTravel Berkey®\u003c\/a\u003e – 1.5 gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/big-berkey-water-filter\"\u003eBig Berkey®\u003c\/a\u003e – 2.25 gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/royal-berkey-water-filter\"\u003eRoyal Berkey®\u003c\/a\u003e – 3.25 gallons\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eImperial Berkey® – 4.5 gallons\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/crown-berkey-water-filter\"\u003eCrown Berkey™\u003c\/a\u003e – 6 gallons\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow much water does the Imperial Berkey® hold?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe Imperial holds 4.5 gallons, or approximately 17 liters, in the lower chamber.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many people is the Imperial Berkey® designed for?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eManufacturer everyday-use guidance places the Imperial at approximately 4–8 people. Actual household water use varies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many Black Berkey® Elements are included?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe current Imperial Berkey® configuration includes two Black Berkey® Elements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the Imperial Berkey® use six filter elements?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eYes. The Imperial can accommodate up to six compatible primary filter elements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the Imperial Berkey® flow rates?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eWith Black Berkey® Elements, the manufacturer's maximum flow figures are up to 5.5 gallons per hour with two elements, up to 11 gallons per hour with four elements, and up to 16.5 gallons per hour with six elements. These maximum rates are measured with the upper chamber full.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat replacement filters fit the Imperial Berkey®?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe current system includes Black Berkey® Elements. Phoenix Gravity New Millennium Edition™ Filter Elements are also compatible with the Imperial and are currently the primary replacement option available through normal authorized U.S. distribution. Check the current \u003ca href=\"\/pages\/replacement-filters-for-berkey\"\u003eReplacement Filters Guide\u003c\/a\u003e when replacement is needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan Phoenix Gravity elements be used in the Imperial Berkey®?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eYes. Phoenix Gravity New Millennium Edition™ Filter Elements are physically compatible with the Imperial Berkey®. The Phoenix PGF9-2 element itself is NSF\/ANSI 42 certified\/listed for chlorine reduction. However, the Imperial Berkey® is not currently included among the Berkey® system configurations listed by NSF under the Phoenix system listings, so element certification should not be presented as Imperial system certification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the Imperial Berkey® NSF certified?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe Imperial Berkey® is \u003cstrong\u003enot currently listed as a certified Berkey® system configuration\u003c\/strong\u003e under the Phoenix NSF system listings. However, the compatible Phoenix Gravity New Millennium Edition Filter Element \u003cstrong\u003ePGF9-2 has its own NSF\/ANSI 42 element listing for chlorine reduction\u003c\/strong\u003e. The currently listed Berkey® Phoenix system configurations are Travel Berkey®, Big Berkey®, and Royal Berkey®. Therefore, do not describe the Imperial Berkey® itself as NSF\/ANSI 42 or NSF\/ANSI\/CAN 372 certified based solely on use of Phoenix elements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan PF-2® Elements be used with the Imperial Berkey®?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eYes, when used with compatible primary filter elements. Install one PF-2® for each compatible primary element, up to six on the Imperial.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow large is the Imperial Berkey®?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe Imperial is approximately 26 inches high in use and 10 inches in diameter. When empty, the chambers can be nested to reduce the stored height to approximately 17 inches.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShould I choose the Royal or Imperial Berkey®?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eChoose the Royal if a smaller countertop footprint and 3.25-gallon capacity are sufficient. Choose the Imperial when you want 4.5 gallons of storage, guidance for approximately 4–8 people, and greater expandable flow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the Imperial Berkey® be used with salt-based softened water?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eManufacturer guidance warns that salt-based softened water can prematurely clog compatible filter elements and may void applicable warranty coverage. Review the softened-water guidance before use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the Imperial Berkey® available in California or Iowa?\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eNo. Due to state regulations, this product is not currently available for sale in California or Iowa.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-product__section\"\u003e\n\u003cp\u003eThe Imperial Berkey® Water Filter System combines a 4.5-gallon capacity, expandable filtration, and simple gravity-fed operation. For larger households and shared spaces, it offers more stored water and greater expandable flow than the Royal Berkey® while remaining smaller than the Crown Berkey™.\u003c\/p\u003e\n\u003cp\u003eLooking to customize your system? Explore our \u003ca href=\"\/pages\/berkey-accessories\"\u003eBerkey Accessories\u003c\/a\u003e, including sight-glass spigots, stands, sleeves, and replacement parts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tb-imperial-compare\"\u003e\n\u003cdiv class=\"tb-imperial-compare__title\"\u003eNot sure if this is the right size?\u003c\/div\u003e\n\u003cp\u003eCompare all Berkey Water Filter Systems to review capacities, dimensions, household-size guidance, and compatible replacement filters.\u003c\/p\u003e\n\u003ca class=\"tb-imperial-compare__button\" href=\"\/pages\/berkey-water-filters\"\u003eCompare All Berkey Water Filter Systems\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"Berkey","offers":[{"title":"Default Title","offer_id":16462609543,"sku":"IMP6X2-BB","price":451.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1172\/5864\/products\/Imperial-Berkey_84dc3b1c-7559-4d09-8a25-fcf7d1ad7422.jpg?v=1489646723","url":"https:\/\/theberkey.com\/products\/imperial-berkey-water-filter","provider":"The Berkey","version":"1.0","type":"link"}