{"product_id":"pentairautofillwhitet40bwpent40bw","title":"Pentair Autofill White | T40BW","description":"\u003ch2 dir=\"auto\" class=\"PDq2pG_selectionAnchorContainer\"\u003eProduct Overview\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003ePentair T40BW AutoFill Automatic Water Leveler\u003c\/strong\u003e is designed to automatically maintain the proper water level in a swimming pool or spa, reducing the need for manual filling and helping prevent problems caused by excessively low or high water levels.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis model features a \u003cstrong\u003eside-mounted float valve\u003c\/strong\u003e and a \u003cstrong\u003ewhite lid and top ring\u003c\/strong\u003e, making it ideal for installation in light-colored pool decks and surrounding surfaces. Pentair identifies \u003cstrong\u003eT40BW\u003c\/strong\u003e specifically as the white AutoFill configuration with a side-mounted float valve. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe mechanical float-valve design operates without electronic controls, providing a simple and dependable solution for maintaining water level in standard inground pools.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine \u003cstrong\u003ePentair OEM AutoFill\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: \u003cstrong\u003eT40BW\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAutomatic pool water-level control\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSide-mounted float valve\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWhite lid and top ring\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eMechanical operation — \u003cstrong\u003eno electronic controls\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHelps maintain proper operating water level\u003c\/li\u003e\n\u003cli\u003eHelps protect pool equipment from low-water conditions\u003c\/li\u003e\n\u003cli\u003eHelps reduce accidental pool overfilling\u003c\/li\u003e\n\u003cli\u003eHelps minimize water waste\u003c\/li\u003e\n\u003cli\u003eCompact installation footprint\u003c\/li\u003e\n\u003cli\u003eDurable \u003cstrong\u003eABS polymer construction\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCorrosion and chemical resistant\u003c\/li\u003e\n\u003cli\u003eIdeal for new construction and pool remodeling\u003c\/li\u003e\n\u003cli\u003eReplacement components available separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003ePentair describes its automatic water fillers as using durable ABS polymer construction with a compact approximately 7-inch-diameter design. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv dir=\"auto\" class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable dir=\"auto\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eAutoFill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eT40BW\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAutomatic Pool Water Leveler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eWhite\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Type\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSide-Mounted Float Valve\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Type\u003c\/td\u003e\n\u003ctd\u003eMechanical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectronic Controls\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eNo\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eStandard Inground Pool \/ Spa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprox. Body Diameter\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e7\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eABS Polymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLid Color\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop Ring Color\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eIn-Deck \/ Poolside\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eHow the Pentair AutoFill Works\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eNormal evaporation, splash-out, backwashing and everyday pool use continually lower the water level.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003eT40BW automatically responds to a dropping water level through its mechanical float-valve assembly\u003c\/strong\u003e. When the water drops below the preset level, the valve allows fresh water into the system. Once the desired level is reached, the float closes the water supply.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis helps maintain a more consistent pool level without requiring the homeowner to repeatedly add water with a garden hose.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eWhy Proper Pool Water Level Matters\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eMaintaining the correct pool water level is important for proper circulation.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eIf the water becomes too low:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe skimmer can begin drawing air\u003c\/li\u003e\n\u003cli\u003eThe pump may lose prime\u003c\/li\u003e\n\u003cli\u003eCirculation can become inconsistent\u003c\/li\u003e\n\u003cli\u003ePump components can potentially be damaged\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003ePentair specifically promotes its AutoFill systems as helping prevent equipment damage associated with low water levels. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAn automatic water leveler can also help prevent excessive filling that may waste water or damage surrounding landscaping.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eSide-Mounted Float Valve\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003eT40BW differs from Pentair T40FW\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eT40BW\u003c\/strong\u003e uses a \u003cstrong\u003eside-mounted float valve\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eT40FW\u003c\/strong\u003e uses a \u003cstrong\u003eFluidmaster® valve\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eIf replacing an existing automatic filler, verify the valve style before ordering. Pentair currently lists both configurations as separate models. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eCompact In-Deck Design\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003ePentair's AutoFill system uses a compact round housing designed for integration into the pool deck.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eOnce installed, only the top lid is prominently visible, helping keep the pool area clean and unobtrusive.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003ewhite T40BW lid\u003c\/strong\u003e works particularly well with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhite concrete\u003c\/li\u003e\n\u003cli\u003eLight-colored decking\u003c\/li\u003e\n\u003cli\u003eLight pavers\u003c\/li\u003e\n\u003cli\u003eQuartz finishes\u003c\/li\u003e\n\u003cli\u003eContemporary pool decks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003ePlumbing Connections\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003ePentair's automatic water-filler assembly incorporates plumbing connections for the water supply, equalizer and overflow functions depending on installation configuration.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003ePentair documentation identifies connections including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e3\/4\" slip supply connection\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1-1\/2\" slip equalizer connection\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3\/4\" slip overflow connection\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eExact plumbing requirements should be confirmed against the Pentair installation instructions before construction. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eReplacement Parts Available\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eCommon Pentair replacement components for this AutoFill family include:\u003c\/p\u003e\n\u003cdiv dir=\"auto\" class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable dir=\"auto\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003ePart Number\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eT10W\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite AutoFill Lid with Screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eT16W\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite AutoFill Top Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eT26\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrass Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e261058\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlastic Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp dir=\"auto\"\u003ePentair continues to list replacement lids, rings and valve components for the automatic water-filler family. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1 dir=\"auto\"\u003eFrequently Asked Questions\u003c\/h1\u003e\n\u003ch3 dir=\"auto\"\u003eWhat is Pentair T40BW?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eT40BW is the white Pentair AutoFill automatic water leveler equipped with a side-mounted float valve.\u003c\/strong\u003e \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eDoes T40BW automatically add water to the pool?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes. Once properly installed and connected to a water supply, the mechanical float valve automatically allows water into the pool system when the level drops.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eIs T40BW electronic?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e Pentair's automatic water-level control operates mechanically and does not require electronic controls. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eWhat color is T40BW?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eWhite.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eWhat's the difference between T40BW and T40FW?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe primary difference is the valve:\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eT40BW:\u003c\/strong\u003e Side-mounted float valve\u003cbr\u003e\u003cstrong\u003eT40FW:\u003c\/strong\u003e Fluidmaster® valve\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eBoth are available with a white lid. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eCan it help prevent pump damage?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eMaintaining proper water level helps prevent the skimmer from drawing air and can help protect circulation equipment from low-water conditions. Pentair specifically identifies equipment protection as one of the benefits of the AutoFill system. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eCan I replace the white lid separately?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes. The replacement \u003cstrong\u003ewhite AutoFill lid with screws is Pentair T10W\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eIs the white top ring replaceable?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes. The replacement white top ring is \u003cstrong\u003ePentair T16W\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52762863010102,"sku":"PENT40BW -H","price":155.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/1167\/9798\/files\/4dca64cd-8818-45c0-89dc-849c561269d0.png?v=1790269026","url":"https:\/\/poolsupplydepot.net\/products\/pentairautofillwhitet40bwpent40bw","provider":"Pool Supply Depot","version":"1.0","type":"link"}