{"product_id":"mermade-48-tubular-keene-bowser-cover-only","title":"Mermade 48\" Tubular Keene-Bowser, Cover Only","description":"\u003cp data-path-to-node=\"0\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"4\"\u003eMer-Made 48\" Tubular Vacuum DE Filter Element (Keene-Bowser Replacement) — Cover Only\u003c\/b\u003e\u003cspan\u003e (cataloged under Part # \u003c\/span\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"114\"\u003e775-COVER \/ VFC-48TB\u003c\/b\u003e\u003cspan\u003e or \u003c\/span\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"138\"\u003eFilter Sock\u003c\/b\u003e\u003cspan\u003e) is the replacement cylindrical fabric sleeve designed to re-cover extended-length support cores in deep-bed legacy \u003c\/span\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"266\"\u003eKeene-Bowser (Bowser-Briggs \/ Keene Corporation)\u003c\/b\u003e\u003cspan\u003e commercial vacuum DE filtration systems,\u003c\/span\u003e\u003cspan\u003e pressure-leaf conversions,\u003c\/span\u003e\u003cspan\u003e and industrial process vaults.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"1\"\u003e\u003cspan\u003eEngineered to fit 2-1\/2\" to 3\" outer diameter cylindrical cores across a 48\" span,\u003c\/span\u003e\u003cspan\u003e this tubular sleeve supplies only the woven synthetic filtration cloth,\u003c\/span\u003e\u003cspan\u003e top\/bottom attachment hems,\u003c\/span\u003e\u003cspan\u003e retention clamps or ties,\u003c\/span\u003e\u003cspan\u003e and replacement base sealing gaskets\/O-rings.\u003c\/span\u003e\u003cspan\u003e It is specified when the internal perforated Schedule 80 PVC\/CPVC or polypropylene core tube and welded end-caps remain structurally sound,\u003c\/span\u003e\u003cspan\u003e but the cloth has blinded from chemical scale,\u003c\/span\u003e\u003cspan\u003e calcification,\u003c\/span\u003e\u003cspan\u003e or body oils,\u003c\/span\u003e\u003cspan\u003e or has torn from repeated backwash cycles.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"3\"\u003eTechnical Specifications \u0026amp; Scope of Delivery\u003c\/h3\u003e\n\u003ctable data-path-to-node=\"4\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter \/ Detail\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,1,0,0\"\u003e\u003cb data-path-to-node=\"4,1,0,0\" data-index-in-node=\"0\"\u003eModel \/ Application\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,1,1,0\"\u003eMer-Made Replacement Extended Tubular Septum Sleeve (Keene-Bowser Retrofit)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,2,0,0\"\u003e\u003cb data-path-to-node=\"4,2,0,0\" data-index-in-node=\"0\"\u003eConfiguration\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,2,1,0\"\u003e\u003cb data-path-to-node=\"4,2,1,0\" data-index-in-node=\"0\"\u003eCover Only\u003c\/b\u003e (Tubular fabric sock + clamps\/seals; excludes internal support candle)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,3,0,0\"\u003e\u003cb data-path-to-node=\"4,3,0,0\" data-index-in-node=\"0\"\u003eNominal Dimensions\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,3,1,0\"\u003e\u003cb data-path-to-node=\"4,3,1,0\" data-index-in-node=\"0\"\u003e48\" Length × 2-1\/2\" to 3\" Diameter Tubular Sleeve\u003c\/b\u003e (approx. 1219 mm L × 63–76 mm ID)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,4,0,0\"\u003e\u003cb data-path-to-node=\"4,4,0,0\" data-index-in-node=\"0\"\u003eActive Filtration Surface Area\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,4,1,0\"\u003e\u003cb data-path-to-node=\"4,4,1,0\" data-index-in-node=\"0\"\u003e2.6 to 3.1 sq. ft.\u003c\/b\u003e nominal per sleeve\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,5,0,0\"\u003e\u003cb data-path-to-node=\"4,5,0,0\" data-index-in-node=\"0\"\u003eFabric Composition\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,5,1,0\"\u003eHigh-tenacity, custom-woven \u003cb data-path-to-node=\"4,5,1,0\" data-index-in-node=\"28\"\u003emonofilament or multifilament polypropylene\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,6,0,0\"\u003e\u003cb data-path-to-node=\"4,6,0,0\" data-index-in-node=\"0\"\u003eFiltration Porosity\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,6,1,0\"\u003eCalibrated nominal \u003cb data-path-to-node=\"4,6,1,0\" data-index-in-node=\"19\"\u003e20 to 30 micron\u003c\/b\u003e pore size for DE pre-coat retention\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,7,0,0\"\u003e\u003cb data-path-to-node=\"4,7,0,0\" data-index-in-node=\"0\"\u003eSleeve Construction\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,7,1,0\"\u003eSeamless circular weave or heavy-duty flat-stitched axial seam with reinforced hems\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,8,0,0\"\u003e\u003cb data-path-to-node=\"4,8,0,0\" data-index-in-node=\"0\"\u003eEnd Closure \/ Fastening\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,8,1,0\"\u003e• Closed top hem or draw-cord\/clamp tie for blind end-cap\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr data-path-to-node=\"5\"\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"6\"\u003e\u003cspan\u003e• Open bottom collar secured with band clamp above base shoulder | | \u003c\/span\u003e\u003cb data-path-to-node=\"6\" data-index-in-node=\"69\"\u003eIncluded Accessories\u003c\/b\u003e\u003cspan\u003e | • 316 Stainless steel worm-gear retention clamp or nylon cable tie set\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr data-path-to-node=\"7\"\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003e\u003cspan\u003e• Replacement base Buna-N\/EPDM O-ring or high-density felt compression collar | | \u003c\/span\u003e\u003cb data-path-to-node=\"8\" data-index-in-node=\"82\"\u003eExcluded Components\u003c\/b\u003e\u003cspan\u003e | Rigid slotted\/perforated Schedule 80 PVC core cylinder,\u003c\/span\u003e\u003cspan\u003e blind top cap,\u003c\/span\u003e\u003cspan\u003e threaded\/spud base hub |\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"10\"\u003eMaterial Properties \u0026amp; Chemical Tolerances\u003c\/h3\u003e\n\u003cul data-path-to-node=\"11\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,0,0\"\u003e\u003cb data-path-to-node=\"11,0,0\" data-index-in-node=\"0\"\u003eChlorine \u0026amp; Saline Resistance:\u003c\/b\u003e\u003cspan\u003e Virgin polypropylene fibers resist chemical degradation,\u003c\/span\u003e\u003cspan\u003e rot,\u003c\/span\u003e\u003cspan\u003e and hydrolysis under continuous exposure to elevated free chlorine,\u003c\/span\u003e\u003cspan\u003e sodium hypochlorite shock dosing,\u003c\/span\u003e\u003cspan\u003e and saline electrolytic pool water (2,\u003c\/span\u003e\u003cspan\u003e500 to 5,\u003c\/span\u003e\u003cspan\u003e000+ ppm NaCl).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e\u003cb data-path-to-node=\"11,1,0\" data-index-in-node=\"0\"\u003eAcid Descaling Resilience:\u003c\/b\u003e\u003cspan\u003e Withstands routine chemical descaling baths in dilute muriatic (hydrochloric) or citric acid to dissolve embedded calcium scale,\u003c\/span\u003e\u003cspan\u003e iron staining,\u003c\/span\u003e\u003cspan\u003e and organic oils without weakening structural seam threads.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,2,0\"\u003e\u003cb data-path-to-node=\"11,2,0\" data-index-in-node=\"0\"\u003ePre-Coat Retention \u0026amp; Release:\u003c\/b\u003e\u003cspan\u003e The balanced monofilament weave structure retains standard DE powder and perlite grades without bleed-through during initial pump startup,\u003c\/span\u003e\u003cspan\u003e while facilitating clean cake release during backwashing or manual hose-down.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"13\"\u003ePhysical Dimensions \u0026amp; Weight Estimates\u003c\/h3\u003e\n\u003cul data-path-to-node=\"14\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,0,0\"\u003e\u003cb data-path-to-node=\"14,0,0\" data-index-in-node=\"0\"\u003eIndividual Cover Net Weight:\u003c\/b\u003e\u003cspan\u003e Approximately \u003c\/span\u003e\u003cb data-path-to-node=\"14,0,0\" data-index-in-node=\"43\"\u003e0.35 to 0.55 lbs (0.16 to 0.25 kg)\u003c\/b\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,1,0\"\u003e\u003cb data-path-to-node=\"14,1,0\" data-index-in-node=\"0\"\u003eSingle Boxed Cover Shipping Weight:\u003c\/b\u003e\u003cspan\u003e Approximately \u003c\/span\u003e\u003cb data-path-to-node=\"14,1,0\" data-index-in-node=\"50\"\u003e0.90 to 1.50 lbs (0.41 to 0.68 kg)\u003c\/b\u003e\u003cspan\u003e in a compact carton.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,2,0\"\u003e\u003cb data-path-to-node=\"14,2,0\" data-index-in-node=\"0\"\u003eMaster Carton \/ Tube Bank Lot (12 to 24 Covers):\u003c\/b\u003e\u003cspan\u003e Approximately \u003c\/span\u003e\u003cb data-path-to-node=\"14,2,0\" data-index-in-node=\"63\"\u003e5.5 to 11.0 lbs (2.5 to 5.0 kg)\u003c\/b\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,3,0\"\u003e\u003cb data-path-to-node=\"14,3,0\" data-index-in-node=\"0\"\u003eFull Vault Overhaul Pack (50 to 100 Covers):\u003c\/b\u003e\u003cspan\u003e Approximately \u003c\/span\u003e\u003cb data-path-to-node=\"14,3,0\" data-index-in-node=\"59\"\u003e20.0 to 38.0 lbs (9.1 to 17.2 kg)\u003c\/b\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"16\"\u003eField Re-Covering \u0026amp; Tensioning Steps\u003c\/h3\u003e\n\u003col start=\"1\" data-path-to-node=\"17\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,0,0\"\u003e\u003cb data-path-to-node=\"17,0,0\" data-index-in-node=\"0\"\u003eStrip Spent Sock:\u003c\/b\u003e\u003cspan\u003e Remove the tubular element from the manifold.\u003c\/span\u003e\u003cspan\u003e Loosen the top and bottom band clamps,\u003c\/span\u003e\u003cspan\u003e slide the calcified cover off the support core,\u003c\/span\u003e\u003cspan\u003e and discard the spent base gasket\/O-ring.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,1,0\"\u003e\u003cb data-path-to-node=\"17,1,0\" data-index-in-node=\"0\"\u003eCore Wash-Down \u0026amp; Inspection:\u003c\/b\u003e\u003cspan\u003e Pressure-wash the bare slotted\/perforated cylinder to clear internal calcified DE and scale.\u003c\/span\u003e\u003cspan\u003e Inspect the plastic core and end-caps for cracks,\u003c\/span\u003e\u003cspan\u003e rough edges,\u003c\/span\u003e\u003cspan\u003e or broken slots that could tear the new fabric.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,2,0\"\u003e\u003cb data-path-to-node=\"17,2,0\" data-index-in-node=\"0\"\u003eSlide Replacement Sleeve:\u003c\/b\u003e\u003cspan\u003e Slide the replacement tubular sock over the top blind cap,\u003c\/span\u003e\u003cspan\u003e pulling it down smoothly along the 48\" cylinder until the bottom hem reaches the base hub shoulder.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,3,0\"\u003e\u003cb data-path-to-node=\"17,3,0\" data-index-in-node=\"0\"\u003eBottom Hem Clamping:\u003c\/b\u003e\u003cspan\u003e Position the lower edge of the sleeve directly above the base fitting shoulder.\u003c\/span\u003e\u003cspan\u003e Fasten the 316 stainless steel worm-gear clamp firmly over the hem to ensure a tight hydraulic seal that prevents DE from bypassing into the discharge port.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,4,0\"\u003e\u003cb data-path-to-node=\"17,4,0\" data-index-in-node=\"0\"\u003eAxial Tensioning \u0026amp; Top Closure:\u003c\/b\u003e\u003cspan\u003e Pull the sleeve upward to eliminate wrinkles,\u003c\/span\u003e\u003cspan\u003e sagging,\u003c\/span\u003e\u003cspan\u003e or axial twisting along the tube body.\u003c\/span\u003e\u003cspan\u003e Fold or tension the top hem over the blind end-cap and tighten the top band clamp or draw-cord tie securely around the top cap boss.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,5,0\"\u003e\u003cb data-path-to-node=\"17,5,0\" data-index-in-node=\"0\"\u003eMount Base Seal:\u003c\/b\u003e\u003cspan\u003e Install the replacement Buna-N\/EPDM O-ring or felt compression collar onto the base spud before threading or pressing the re-covered tubular element back into the Keene-Bowser tube-sheet receiver.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":68168017641583,"sku":"DE-48TKBCO","price":113.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/mermade-filter-fiberglass-commercial-pool-filter-in-operation-474-474.jpg?v=1793718890","url":"https:\/\/commercialpoolandspasupplies.com\/products\/mermade-48-tubular-keene-bowser-cover-only","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}