{"product_id":"4-fvs-single-arm-float-valve-open-pipe","title":"4\" FVS Single Arm Float Valve - Open Pipe","description":"\u003cp dir=\"ltr\" data-path-to-node=\"0\" class=\"first-token\"\u003e\u003cspan class=\"\"\u003eThe \u003c\/span\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"4\"\u003e4\" FVS Single Arm Float Valve – Open Pipe\u003c\/b\u003e\u003cspan\u003e (Float Valve Single-arm,\u003c\/span\u003e\u003cspan\u003e 4-inch nominal pipe size) is a heavy-duty mechanical water-level control valve engineered for commercial aquatic surge tanks,\u003c\/span\u003e\u003cspan\u003e collector pits,\u003c\/span\u003e\u003cspan\u003e balance tanks,\u003c\/span\u003e\u003cspan\u003e and open-channel gravity return systems.\u003c\/span\u003e\u003cspan\u003e Installed directly onto an open-ended 4-inch horizontal or vertical-turn inlet pipe inside a surge pit,\u003c\/span\u003e\u003cspan\u003e the valve automatically modulates or shuts off gravity flow from the pool gutters\/skimmers as water rises in the tank—preventing surge tank overflow during heavy bather surges while maintaining positive flooded suction head for the main circulation pumps.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"attachment-container search-images md-has-block-component\"\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003ctable data-path-to-node=\"3\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\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=\"3,1,0,0\"\u003e\u003cb data-path-to-node=\"3,1,0,0\" data-index-in-node=\"0\"\u003eEquipment Reference\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,1,1,0\"\u003e4\" FVS Single Arm Float Valve – Open Pipe (Commercial Surge Tank Level Control)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,2,0,0\"\u003e\u003cb data-path-to-node=\"3,2,0,0\" data-index-in-node=\"0\"\u003eNominal Pipe Size\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,2,1,0\"\u003e4.0 in (100 mm \/ DN100)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,3,0,0\"\u003e\u003cb data-path-to-node=\"3,3,0,0\" data-index-in-node=\"0\"\u003eInlet Connection Type\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,3,1,0\"\u003eOpen-Pipe Mount: Female Slip Socket (Schedule 40\/80 IPS) or Clamp-On \/ Threaded Sleeve for direct mounting onto bare 4.0\" OD (4.50\" actual OD) open pipe end\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,4,0,0\"\u003e\u003cb data-path-to-node=\"3,4,0,0\" data-index-in-node=\"0\"\u003eDischarge Configuration\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,4,1,0\"\u003eUnobstructed Open-Discharge \/ Free-Fall Port (zero downstream backpressure)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,5,0,0\"\u003e\u003cb data-path-to-node=\"3,5,0,0\" data-index-in-node=\"0\"\u003eActuation Mechanism\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,5,1,0\"\u003eMechanical Single-Arm Lever Linkage (direct proportional buoyancy actuation; requires no electricity or compressed air)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,6,0,0\"\u003e\u003cb data-path-to-node=\"3,6,0,0\" data-index-in-node=\"0\"\u003eValve Body \u0026amp; Housing Material\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,6,1,0\"\u003eHeavy-duty machined Schedule 80 PVC, CPVC, or molded high-impact ABS \/ FRP composite\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,7,0,0\"\u003e\u003cb data-path-to-node=\"3,7,0,0\" data-index-in-node=\"0\"\u003ePivot Arm \u0026amp; Linkage Hardware\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,7,1,0\"\u003e316 Marine-Grade Stainless Steel arm, clevis pins, and locknuts (eliminates galvanic corrosion and chlorine stress-cracking)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,8,0,0\"\u003e\u003cb data-path-to-node=\"3,8,0,0\" data-index-in-node=\"0\"\u003eFloat Ball \/ Buoyancy Element\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,8,1,0\"\u003eHeavy-wall seamless Polyethylene (HDPE), Polypropylene, or 316 Stainless Steel spherical\/cylindrical float (typically 8\" to 12\" diameter)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,9,0,0\"\u003e\u003cb data-path-to-node=\"3,9,0,0\" data-index-in-node=\"0\"\u003eSeat \u0026amp; Disc Seal Material\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,9,1,0\"\u003eReplaceable thick-wall EPDM or Neoprene elastomer disc \/ flapper seal for drip-tight shutoff\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,10,0,0\"\u003e\u003cb data-path-to-node=\"3,10,0,0\" data-index-in-node=\"0\"\u003eRecommended Gravity Flow Capacity\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,10,1,0\"\u003eApprox. 180 to 350 US gpm (40.9 to 79.5 m³\/h) at standard gravity head (1 to 3 ft water column)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,11,0,0\"\u003e\u003cb data-path-to-node=\"3,11,0,0\" data-index-in-node=\"0\"\u003eMaximum Operating Pressure\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,11,1,0\"\u003e15 to 25 psi (1.03 to 1.72 bar) — engineered specifically for low-head gravity gutter\/main-drain lines\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,12,0,0\"\u003e\u003cb data-path-to-node=\"3,12,0,0\" data-index-in-node=\"0\"\u003eOperating Temperature Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,12,1,0\"\u003e32°F to 120°F (0°C to 49°C)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,13,0,0\"\u003e\u003cb data-path-to-node=\"3,13,0,0\" data-index-in-node=\"0\"\u003eLevel Adjustment Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,13,1,0\"\u003eAdjustable arm pitch \/ float rod indexing allows field calibration of shutoff water elevation (+\/- 4 to 8 in)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,14,0,0\"\u003e\u003cb data-path-to-node=\"3,14,0,0\" data-index-in-node=\"0\"\u003eCompliance \/ Standards\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"3,14,1,0\"\u003eNSF\/ANSI Standard 50 compatible materials; meets Model Aquatic Health Code (MAHC) surge tank overflow protection guidelines\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 dir=\"ltr\" data-path-to-node=\"4\"\u003eHydraulic \u0026amp; Mechanical Operating Details\u003c\/h3\u003e\n\u003cul dir=\"ltr\" data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003eProportional Modulating Action:\u003c\/b\u003e\u003cspan\u003e As surge tank water drops during pump startup or high evaporation,\u003c\/span\u003e\u003cspan\u003e the float descends,\u003c\/span\u003e\u003cspan\u003e swinging the single pivot arm downward to open the 4\" valve bore completely.\u003c\/span\u003e\u003cspan\u003e As water returns from the pool gutter system and raises the tank level,\u003c\/span\u003e\u003cspan\u003e buoyancy lifts the arm to progressively throttle and close the EPDM disc against the machined valve seat.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eOpen-Pipe Installation:\u003c\/b\u003e\u003cspan\u003e Designed specifically for retrofits and new builds where the 4\" gutter\/gravity return line terminates cleanly inside the surge tank wall without an ANSI flange.\u003c\/span\u003e\u003cspan\u003e The valve hub slips directly over or sockets onto the 4\" PVC pipe stub and is secured via solvent weld or stainless steel mechanical locking screws.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eMaintenance Access:\u003c\/b\u003e\u003cspan\u003e Single-arm geometry minimizes submerged moving joints,\u003c\/span\u003e\u003cspan\u003e preventing hair,\u003c\/span\u003e\u003cspan\u003e lint,\u003c\/span\u003e\u003cspan\u003e or scale buildup from binding the linkage and allowing the EPDM disc seal to be serviced without unbolting the main body from the pipe.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,3,0\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003eShipping Weight:\u003c\/b\u003e\u003cspan\u003e Approx.\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"25\"\u003e12 to 18 lbs (5.4 to 8.2 kg)\u003c\/b\u003e\u003cspan\u003e complete with 4\" valve body,\u003c\/span\u003e\u003cspan\u003e 316 SS single pivot arm,\u003c\/span\u003e\u003cspan\u003e adjustable linkage hardware,\u003c\/span\u003e\u003cspan\u003e and float ball.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":68343814422639,"sku":"4FVS-OP","price":1576.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/mermade-filter-modulating-float-valve-474-474-desktop.jpg?v=1794497901","url":"https:\/\/commercialpoolandspasupplies.com\/products\/4-fvs-single-arm-float-valve-open-pipe","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}