F-420 Acrylic Flow Meter
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The F-420N Series Acrylic Flow Meter is engineered for durability, accuracy, and visual clarity in demanding industrial and water treatment systems. Each F-420 meter is machined from high-quality annealed acrylic, polished to a glass-like finish, and features a direct-reading, screen-printed scale with a white back reflector for maximum readability.
PVC adapters and FKM (Viton) O-rings provide robust chemical resistance, while standard 316 stainless steel floats and guide rods ensure long-lasting, accurate performance. The F-420N supports 1” FNPT and 1½” MNPT pipe connections, and is suitable for outdoor installations—even in direct sunlight.
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OVERVIEW
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SPECIFICATIONS
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MODEL NUMBERS
Manufacturer: Blue-White Industries
Model: F-420N Series
Product Type: Acrylic Flow Meter
Applications: Water treatment, industrial process flow, chemical dosing, OEM skids
Display: Permanent, direct-reading GPM/LPM scale with white reflector
Pipe Sizes: 1” FNPT, 1½” MNPT
Body Material: Clear, annealed acrylic
Adapters: PVC
Float & Guide Rod: 316 Stainless Steel
O-Rings: FKM (Viton), EP options available
| Technical Specifications | |
|---|---|
| Flow Range | 5–50 GPM / 20–200 LPM (varies by model) |
| Pipe Sizes | 1” FNPT, 1½” MNPT |
| Max Pressure | 130 PSI (8.9 bar) @ 70°F (21°C) |
| Max Temperature | 130°F (54°C) @ 0 psig |
| Accuracy | ±5% F.S. |
| Body Material | Annealed, polished acrylic |
| Adapter Material | PVC |
| O-Ring Seal | FKM (Viton), EP optional |
| Float/Guide Rod | 316 Stainless Steel |
| Outdoor Use | Acceptable in direct sunlight |
| Shipping Weight | Approx. 2 lb. (0.91 kg) |
| Catalog Number | Description / Flow Range | Pipe Size |
|---|---|---|
| F-42025LN | 5–25 GPM Acrylic, 1.5″ MNPT | 1½” M/NPT |
| F-42040LN | 8–40 GPM Acrylic, 1.5″ MNPT | 1½” M/NPT |
| F-42050LN | 10–50 GPM Acrylic, 1.5″ MNPT | 1½” M/NPT |
| F-42025LN-16 | 5–25 GPM Acrylic, 1.0″ FNPT | 1″ F/NPT |
| F-42040LN-16 | 8–40 GPM Acrylic, 1.0″ FNPT | 1″ F/NPT |
| F-42050LN-16 | 10–50 GPM Acrylic, 1.0″ FNPT | 1″ F/NPT |