{"product_id":"4-fvd-double-arm-float-valve-open-pipe","title":"4\" FVD Double 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\" FVD Double Arm Float Valve – Open Pipe\u003c\/b\u003e\u003cspan\u003e (Float Valve Double-arm,\u003c\/span\u003e\u003cspan\u003e 4-inch nominal pipe size) is a heavy-duty,\u003c\/span\u003e\u003cspan\u003e balanced-leverage 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 downward-turned gravity return pipe inside a surge pit,\u003c\/span\u003e\u003cspan\u003e the dual-arm yoke architecture distributes closing forces evenly across the valve disc—preventing side-loading,\u003c\/span\u003e\u003cspan\u003e binding,\u003c\/span\u003e\u003cspan\u003e and premature seat wear under higher gravity static heads or turbulent surge conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable data-path-to-node=\"2\"\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=\"2,1,0,0\"\u003e\u003cb data-path-to-node=\"2,1,0,0\" data-index-in-node=\"0\"\u003eEquipment Reference\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,1,1,0\"\u003e4\" FVD Double 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=\"2,2,0,0\"\u003e\u003cb data-path-to-node=\"2,2,0,0\" 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=\"2,2,1,0\"\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=\"2,3,0,0\"\u003e\u003cb data-path-to-node=\"2,3,0,0\" 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=\"2,3,1,0\"\u003eOpen-Pipe Mount: Female Slip Socket (Schedule 40\/80 IPS) or Clamp-On \/ Locking Sleeve for direct mounting onto bare 4.0\" nominal (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=\"2,4,0,0\"\u003e\u003cb data-path-to-node=\"2,4,0,0\" data-index-in-node=\"0\"\u003eDischarge Configuration\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,4,1,0\"\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=\"2,5,0,0\"\u003e\u003cb data-path-to-node=\"2,5,0,0\" data-index-in-node=\"0\"\u003eActuation Mechanism\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,5,1,0\"\u003eMechanical Double-Arm Yoke Lever Linkage (symmetrical dual-side arms providing balanced axial seating force; 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=\"2,6,0,0\"\u003e\u003cb data-path-to-node=\"2,6,0,0\" 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=\"2,6,1,0\"\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=\"2,7,0,0\"\u003e\u003cb data-path-to-node=\"2,7,0,0\" data-index-in-node=\"0\"\u003ePivot Arms \u0026amp; Linkage Hardware\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,7,1,0\"\u003eDual 316 Marine-Grade Stainless Steel arms, cross-yoke, clevis pins, and locknuts (eliminates torsional twisting and galvanic corrosion)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,8,0,0\"\u003e\u003cb data-path-to-node=\"2,8,0,0\" 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=\"2,8,1,0\"\u003eHeavy-wall seamless Polyethylene (HDPE), Polypropylene, or 316 Stainless Steel spherical\/cylindrical float (typically 10\" to 12\" diameter)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,9,0,0\"\u003e\u003cb data-path-to-node=\"2,9,0,0\" 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=\"2,9,1,0\"\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=\"2,10,0,0\"\u003e\u003cb data-path-to-node=\"2,10,0,0\" 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=\"2,10,1,0\"\u003eApprox. 180 to 380 US gpm (40.9 to 86.3 m³\/h) at standard gravity head (1 to 4 ft water column)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,11,0,0\"\u003e\u003cb data-path-to-node=\"2,11,0,0\" 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=\"2,11,1,0\"\u003e25 to 35 psi (1.72 to 2.41 bar) — enhanced shutoff capability over single-arm designs due to balanced double-arm mechanical advantage\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,12,0,0\"\u003e\u003cb data-path-to-node=\"2,12,0,0\" 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=\"2,12,1,0\"\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=\"2,13,0,0\"\u003e\u003cb data-path-to-node=\"2,13,0,0\" 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=\"2,13,1,0\"\u003eAdjustable dual-arm pitch \/ float rod indexing allows precise 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=\"2,14,0,0\"\u003e\u003cb data-path-to-node=\"2,14,0,0\" data-index-in-node=\"0\"\u003eCompliance \/ Standards\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,14,1,0\"\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=\"3\"\u003eHydraulic \u0026amp; Mechanical Operating Details\u003c\/h3\u003e\n\u003cul dir=\"ltr\" data-path-to-node=\"4\"\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4,0,0\"\u003e\u003cb data-path-to-node=\"4,0,0\" data-index-in-node=\"0\"\u003eBalanced Dual-Arm Seating:\u003c\/b\u003e\u003cspan\u003e Unlike single-arm float valves where buoyancy lifts from one side of the valve body,\u003c\/span\u003e\u003cspan\u003e the \u003c\/span\u003e\u003cb data-path-to-node=\"4,0,0\" data-index-in-node=\"116\"\u003eFVD Double Arm\u003c\/b\u003e\u003cspan\u003e utilizes two parallel stainless steel arms straddling both sides of the 4\" valve housing and tying into a central yoke.\u003c\/span\u003e\u003cspan\u003e This applies uniform,\u003c\/span\u003e\u003cspan\u003e perpendicular closing pressure against the EPDM seat,\u003c\/span\u003e\u003cspan\u003e eliminating cocking or uneven wear when closing against elevated gravity return heads.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4,1,0\"\u003e\u003cb data-path-to-node=\"4,1,0\" data-index-in-node=\"0\"\u003eOpen-Pipe Installation:\u003c\/b\u003e\u003cspan\u003e Built specifically for installations where the 4\" gutter or main-drain gravity line terminates cleanly inside the surge tank wall without a bolted flange.\u003c\/span\u003e\u003cspan\u003e The valve hub slips directly over the 4\" PVC pipe stub and is secured via solvent welding 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=\"4,2,0\"\u003e\u003cb data-path-to-node=\"4,2,0\" data-index-in-node=\"0\"\u003eSurge \u0026amp; Turbulence Stability:\u003c\/b\u003e\u003cspan\u003e The rigid dual-arm frame resists lateral deflection caused by splashing,\u003c\/span\u003e\u003cspan\u003e wave action,\u003c\/span\u003e\u003cspan\u003e or cascading gutter water inside turbulent balance pits,\u003c\/span\u003e\u003cspan\u003e ensuring consistent shutoff elevation without chatter.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4,3,0\"\u003e\u003cb data-path-to-node=\"4,3,0\" 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=\"4,3,0\" data-index-in-node=\"25\"\u003e15 to 22 lbs (6.8 to 10.0 kg)\u003c\/b\u003e\u003cspan\u003e complete with 4\" valve body,\u003c\/span\u003e\u003cspan\u003e dual 316 SS pivot arms,\u003c\/span\u003e\u003cspan\u003e cross-yoke 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":68343837753455,"sku":"4FVD-OP","price":2268.0,"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-fvd-double-arm-float-valve-open-pipe","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}