Commercial Pool and Spa Supplies
10" FVDP Double Arm Float Valve with Pivot - Open Pipe
10" FVDP Double Arm Float Valve with Pivot - Open Pipe
SKU:10FVDP-OP
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The 10" FVDP Double Arm Float Valve with Pivot – Open Pipe (catalog part number 10FVDP-OP) is an extra-heavy-duty, balanced-leverage, ultra-large-bore commercial mechanical water-level control valve engineered for mega-capacity aquatic surge tanks, collector pits, balance tanks, and open-channel gravity return systems. Constructed with a corrosion-proof Schedule 80 PVC body and a symmetrical twin-arm pivot linkage, it mounts directly onto an open-ended 10-inch gravity return pipe stub inside a surge pit to automatically modulate or shut off massive perimeter gutter and skimmer return flows as water levels rise—preventing surge tank overflow while maintaining positive flooded suction head for main circulation pumps.
| Parameter | Specification |
|---|---|
| Part / Model Reference | 10FVDP-OP (10" Float Valve, Double-Arm, PVC Body with Dual Pivot Linkage, Open-Pipe Mount) |
| Nominal Pipe Size | 10.0 in (250 mm / DN250) |
| Inlet Connection Type | Open-Pipe Mount: Female Slip Socket (Schedule 40/80 IPS, 10.750" ID socket) or Slide-On Locking Hub for bare 10.0" nominal (10.750" actual OD) open pipe end |
| Discharge Configuration | Unobstructed Open-Discharge / Free-Fall Port (zero downstream backpressure) |
| Actuation & Pivot Mechanism | Articulated Double-Arm Yoke Lever with Dual Clevis Pivot Hinges (symmetrical dual-side heavy-duty arms providing balanced axial closing force; no electricity or compressed air required) |
| Valve Body & Housing Material | Heavy-duty machined Schedule 80 PVC (non-corrosive, UV- and chlorine-resistant) |
| Pivot Arms, Hinges & Fasteners | Dual extra-heavy-gauge 316 Marine-Grade Stainless Steel arms, structural cross-yoke, machined pivot clevises, hinge pins, and locknuts (eliminates torsional deflection and galvanic corrosion) |
| Float Ball / Buoyancy Element | Seamless heavy-wall Polyethylene (HDPE), Polypropylene, or 316 Stainless Steel oversized spherical/cylindrical float (typically 16" to 18" diameter, or dual-float assembly, to generate sufficient closing torque on a 10" bore) |
| Seat & Disc Seal Material | Replaceable thick-wall EPDM or Neoprene elastomer disc / flapper seal for drip-tight shutoff |
| Recommended Gravity Flow Capacity | Approx. 1,200 to 2,500+ US gpm (272.5 to 567.8+ m³/h) at standard gravity head (1 to 4 ft water column) |
| Maximum Operating Pressure | 15 to 25 psi (1.03 to 1.72 bar) — engineered specifically for high-volume, low-head gravity gutter and collector mains |
| Operating Temperature Range | 32°F to 120°F (0°C to 49°C) |
| Level Adjustment Range | Indexed dual-pivot clevises and adjustable float rod pitch allow precise field calibration of shutoff water elevation (+/- 4 to 8 in) |
| Compliance / Standards | NSF/ANSI Standard 50 compatible materials; meets Model Aquatic Health Code (MAHC) surge tank overflow protection guidelines |
Hydraulic & Mechanical Operating Details
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Nomenclature Breakdown:
10= 10-inch nominal bore;FV= Float Valve;D= Double-Arm yoke lever mechanism;P= PVC body construction;OP= Open-Pipe slip/clamp mount (as opposed to-FLfor ANSI Class 150 flanged connections). -
Balanced Dual-Pivot Geometry on 10-Inch Bores: Across a 78.5 sq. in. orifice area (over 56% larger than an 8" valve), even modest gravity head generates substantial hydraulic seating loads. Straddling both sides of the PVC housing with twin extra-heavy-gauge 316 stainless steel arms and matched pivot clevis hinges translates buoyancy from the 16"–18" float into uniform, perpendicular closing force against the EPDM seat—preventing disc cocking, binding, chatter, or uneven seal wear during severe surge events.
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Open-Pipe Installation: Built specifically for installations where the 10" perimeter gutter or main-drain gravity collector terminates cleanly inside the surge tank wall without a bolted ANSI flange. The female PVC hub slips directly onto the 10" pipe stub and is secured via PVC solvent cement or stainless steel mechanical locking bolts.
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Shipping Weight: Approx. 52 to 72 lbs (23.6 to 32.7 kg) complete with 10" PVC valve body, dual extra-heavy-duty 316 SS pivot arms and clevis assemblies, cross-yoke linkage hardware, and oversized float ball.
