{"product_id":"pentair-188625-fullfloxf-fv72-de-filter-72-sq-ft","title":"Pentair 188625 FullFloXF FV72 D.E. Pool Filter — 72 sq ft Fiberglass with Built-In Backwash Valve, 2 in — Genuine OEM","description":"\u003cp\u003eThe \u003cstrong\u003ePentair 188625 FullFloXF FV72\u003c\/strong\u003e is the larger of the two FullFloXF \u003cstrong\u003eFV\u003c\/strong\u003e D.E. filters — 72 sq ft of fiberglass grid-style filtration with the \u003cstrong\u003ebackwash valve built into the tank\u003c\/strong\u003e, handling up to \u003cstrong\u003e144 GPM\u003c\/strong\u003e on 2 in plumbing.\u003c\/p\u003e\n\u003ch2\u003e⚠️ Not the Same as the F72 (188621)\u003c\/h2\u003e\n\u003cp\u003ePentair sells two 72 sq ft FullFloXF D.E. filters and they are easy to confuse — both are 72 sq ft, both are rated 144 GPM, both are grid-style D.E. The differences that matter:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e188625 FV72 (this one):\u003c\/strong\u003e \u003cstrong\u003e2 in\u003c\/strong\u003e plumbing, backwash valve \u003cstrong\u003eincluded\u003c\/strong\u003e, 76 in clearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e188621 F72:\u003c\/strong\u003e \u003cstrong\u003e2.5-3 in\u003c\/strong\u003e plumbing, \u003cstrong\u003eno valve included\u003c\/strong\u003e (needs 262511 or 410020, bought separately), 92 in clearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePentair's F-series manual warns that \u003cem\u003e\"failure to use the correct backwash valve could damage the filter cartridges and void the warranty.\"\u003c\/em\u003e Match your plumbing size: 2 in takes this filter, 2.5-3 in takes the F72.\u003c\/p\u003e\n\u003ch2\u003eFV72 or FV60?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e188625 FV72 (this one):\u003c\/strong\u003e 72 sq ft, 144 GPM, \u003cstrong\u003e76 in vertical clearance\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e188624 FV60:\u003c\/strong\u003e 58 sq ft, 116 GPM, \u003cstrong\u003e70 in vertical clearance\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBoth tanks are 21.5 in across, both run 2 in plumbing, and both take the same 7.2 lb D.E. charge, so the pad footprint is identical. \u003cstrong\u003eThe deciding factor is usually headroom, not price.\u003c\/strong\u003e You need 76 in above this filter to lift the lid and withdraw the grid assembly — six inches more than the FV60. Pentair's installation manual is more conservative still, calling for 7 ft (84 in); if you are planning a new equipment room rather than measuring an existing one, use 84 in.\u003c\/p\u003e\n\u003ch2\u003eSizing by Pool Volume\u003c\/h2\u003e\n\u003cp\u003eAt an 8-hour turnover the FV72 suits pools up to about \u003cstrong\u003e69,120 gallons\u003c\/strong\u003e; at 12 hours, up to 103,680. If you are choosing between the two sizes and have the clearance, this is the one to take: more filter area means longer runs between cleanings, lower head loss and less work for the pump.\u003c\/p\u003e\n\u003ch2\u003eWhy D.E. Rather Than Sand or Cartridge\u003c\/h2\u003e\n\u003cp\u003eDiatomaceous earth coats the grids and filters finer than either sand or cartridge media, down to a few microns. It is what you choose when water clarity is the priority. The trade-offs: D.E. needs recharging after every backwash, and spent D.E. slurry has disposal rules in many jurisdictions — check locally before committing to the technology.\u003c\/p\u003e\n\u003ch2\u003e⚠️ Never Run It Without D.E.\u003c\/h2\u003e\n\u003cp\u003ePentair's manual is blunt: \u003cem\u003e\"If filter operates without diatomaceous earth (D.E.) for more than 3 minutes, filter elements may be damaged.\"\u003c\/em\u003e Recharge with \u003cstrong\u003e7.2 lb\u003c\/strong\u003e of D.E. after every backwash before the pump goes back on.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e72 sq ft of D.E. filtration:\u003c\/strong\u003e up to 144 GPM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackwash valve included:\u003c\/strong\u003e a 2 in rotary valve built into the tank, unlike the F72.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiberglass reinforced tank:\u003c\/strong\u003e will not rust or corrode in pool chemistry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinest filtration of the three media types:\u003c\/strong\u003e D.E. traps down to a few microns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 in plumbing:\u003c\/strong\u003e suits standard residential pad layouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e21.5 in diameter:\u003c\/strong\u003e same footprint as the FV60, so swapping sizes does not change the pad layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 188625\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e FullFloXF FV72 fiberglass D.E. filter, 4000-Series (manual P\/N 198287)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Area:\u003c\/strong\u003e 72 sq ft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Flow Rate:\u003c\/strong\u003e 144 GPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlumbing:\u003c\/strong\u003e 2 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Diameter:\u003c\/strong\u003e 21.5 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVertical Clearance Required:\u003c\/strong\u003e 76 in minimum (installation manual specifies 84 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Pressure:\u003c\/strong\u003e 50 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD.E. Media Required:\u003c\/strong\u003e 7.2 lb (3.3 kg)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurnover, 8 hours:\u003c\/strong\u003e 69,120 gal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurnover, 10 hours:\u003c\/strong\u003e 86,400 gal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurnover, 12 hours:\u003c\/strong\u003e 103,680 gal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve:\u003c\/strong\u003e Built-in 2 in rotary backwash valve (service parts 178828 assembly, 073370 rotor and seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Material:\u003c\/strong\u003e Fiberglass reinforced polypropylene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnchor Clamp Kit:\u003c\/strong\u003e 178840, sold separately, recommended in high-wind and seismic areas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmaller Size:\u003c\/strong\u003e FV60, item 188624\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo Not Confuse With:\u003c\/strong\u003e F72, item 188621, 2.5-3 in plumbing and no valve included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Pentair (Genuine OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation and Safety\u003c\/h2\u003e\n\u003cp\u003ePentair states \u003cem\u003e\"only a qualified plumbing professional should install this filter.\"\u003c\/em\u003e Key points from the manual: maximum working pressure is \u003cstrong\u003e50 psi\u003c\/strong\u003e; \u003cstrong\u003edo not pressure test with compressed air\u003c\/strong\u003e; do not connect to a high-pressure or city water supply; open the air relief valve and wait for pressure to reach zero before servicing; keep electrical controls at least 5 ft from the filter; mount on a level concrete slab; support piping independently; and use only PTFE or silicone lubricant on the O-rings, never petroleum-based.\u003c\/p\u003e\n\u003ch2\u003eWarranty — Read This Before You Buy Online\u003c\/h2\u003e\n\u003cp\u003ePentair lists filters at a 2-year parts and labour warranty, but its published policy carves out online purchases: \u003cem\u003e\"Products purchased from the internet, including Authorized Pentair Online Resellers, receive a one-year parts only warranty from the date of purchase,\"\u003c\/em\u003e and \u003cem\u003e\"labor is not covered for... internet purchases.\"\u003c\/em\u003e The three-year bundle warranty also excludes internet purchases. The internal D.E. grids are classed as consumables at one year.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eHow is this different from the F72, item 188621?\u003c\/h3\u003e\n\u003cp\u003ePlumbing size and the valve. Both are 72 sq ft and 144 GPM, but this filter takes 2 in plumbing and includes its backwash valve, while the F72 takes 2.5-3 in and needs a valve bought separately. Pentair warns that fitting the wrong valve can damage the elements and void the warranty.\u003c\/p\u003e\n\u003ch3\u003eHow much headroom do I actually need?\u003c\/h3\u003e\n\u003cp\u003e76 inches above the filter as published, and Pentair's installation manual asks for 84. Use 84 if you are designing a new equipment room. If you cannot clear it, look at the FV60, which needs 70 in.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between this and the 188624 FV60?\u003c\/h3\u003e\n\u003cp\u003eArea and flow. This filter gives 72 sq ft and 144 GPM against the FV60's 58 sq ft and 116 GPM. Same 21.5 in diameter, same 2 in plumbing, same 7.2 lb D.E. charge.\u003c\/p\u003e\n\u003ch3\u003eDoes it include the backwash valve?\u003c\/h3\u003e\n\u003cp\u003eYes, a 2 in rotary valve is built into the tank.\u003c\/p\u003e\n\u003ch3\u003eHow much D.E. does it take?\u003c\/h3\u003e\n\u003cp\u003e7.2 lb, roughly 14 one-pound scoops, and it is not included. Recharge after every backwash — running the filter without D.E. for more than three minutes can damage the grids.\u003c\/p\u003e\n\u003ch3\u003eHow do I size this against my pump?\u003c\/h3\u003e\n\u003cp\u003eThe filter should be rated at or above your pump's maximum flow. At 144 GPM it comfortably covers residential variable speed pumps at full output, but check your pump curve at your system's actual head rather than its nameplate horsepower.\u003c\/p\u003e\n\u003ch3\u003eHow does it ship?\u003c\/h3\u003e\n\u003cp\u003eAs a freight shipment rather than by parcel carrier. Inspect the carton on delivery and note any damage on the carrier paperwork before you sign.\u003c\/p\u003e\n\u003cdiv class=\"ps4u-faq\"\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the part number for this filter?\u003c\/h3\u003e\n\u003cp\u003ePentair lists this filter under item number 188625, model FV72. Quote 188625 when you cross-reference it — the FV60 is 188624 and the similar-looking F72 is 188621.\u003c\/p\u003e\n\u003ch3\u003eHow do I confirm this fits my equipment?\u003c\/h3\u003e\n\u003cp\u003eCheck four things: your plumbing size against 2 in, your pool volume against the turnover figures, your pump's maximum flow against 144 GPM, and the vertical clearance above your filter against 76 in. If any of those is tight, send us your details before ordering and we will confirm.\u003c\/p\u003e\n\u003ch3\u003eDoes filter installation need a professional?\u003c\/h3\u003e\n\u003cp\u003eYes. Pentair states that only a qualified plumbing professional should install this filter, and warranty coverage can depend on it. Shut off and depressurise the system before any work on the pad, and never pressure test with compressed air.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty on this filter?\u003c\/h3\u003e\n\u003cp\u003ePentair lists filters at two years parts and labour, but its policy limits internet purchases to one year, parts only, with no labour coverage. The internal D.E. grids are consumables at one year. Review Pentair's current terms before purchasing and keep your receipt and packaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003csmall\u003eCalifornia Proposition 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.\u003c\/small\u003e\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":67743698125117,"sku":"188625","price":1849.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/6741\/8429\/files\/pentair-fullfloxf-fv60-58-sq-ft-fiberglass-de-filter-with-built-in-backwash-valve-188624-vita-pool-supply-2072309_1200x1200_7f397e57-2723-4fd7-949c-a3044cba3e37.png?v=1792432184","url":"https:\/\/poolsupply4u.com\/products\/pentair-188625-fullfloxf-fv72-de-filter-72-sq-ft","provider":"PoolSupply 4U","version":"1.0","type":"link"}