F-410 Acrylic Flow Meter
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The F-410N Series Acrylic Flow Meter offers reliable, accurate flow measurement for industrial, water treatment, and chemical process applications. Each F-410 is machined from high-quality, annealed acrylic and polished to a glass-like finish for superior clarity. The screen-printed permanent scale, backed by a white reflector, ensures easy, direct readings in any environment—even in direct sunlight.
Reinforced polypropylene adapters with aluminum stress rings and Viton (FKM) O-rings deliver excellent chemical resistance and durability under pressure. The F-410N is available for ¾” and 1” FNPT pipe sizes and handles up to 150 PSI, with an accuracy of ±5% full scale.

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OVERVIEW
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SPECIFICATIONS
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MODEL NUMBERS
Manufacturer: Blue-White Industries
Model: F-410N Series
Product Type: Acrylic Flow Meter
Applications: Industrial flow monitoring, water treatment, chemical dosing, OEM skid manufacturing
Display: Direct-reading, screen-printed GPM/LPM scale with white reflector
Pipe Sizes: ¾”, 1” FNPT
Body Material: Clear, annealed acrylic
Adapters: Polypropylene with aluminum stress rings
Float & Guide Rod: 316 Stainless Steel
O-Rings: FKM (Viton); EP options available
Technical Specifications | |
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Flow Range | 1–20 GPM / 4–80 LPM (varies by model) |
Pipe Sizes | ¾”, 1” FNPT |
Max Pressure | 150 PSI (10.3 bar) @ 70°F (21°C) |
Max Temperature | 150°F (65°C) @ 0 PSI |
Accuracy | ±5% F.S. |
Scale Length | 5” (127mm) |
Maximum Pressure Drop | 2 PSI |
Body Material | Annealed, polished acrylic |
Adapter Material | Polypropylene w/ aluminum ring |
O-Ring Seal | FKM (Viton), EP optional |
Float/Guide Rod | 316 Stainless Steel |
Environment | Acceptable for direct sunlight |
Approx. Shipping Weight | 2 lb. (0.91 kg) |
Catalog Number | Description / Flow Range | Pipe Size |
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F-40750LN-12 | 1–10 GPM Acrylic, .75″ F/NPT | ¾” |
F-41000LN-12 | 2–20 GPM Acrylic, .75″ F/NPT | ¾” |
F-40750LN-16 | 1–10 GPM Acrylic, 1.0″ F/NPT | 1″ |
F-41000LN-16 | 2–20 GPM Acrylic, 1.0″ F/NPT | 1″ |