Description
DISCONTINUED – **1 LEFT ON HAND**
Blue-White Flow Meter, 0.5 to 5.0 GPM for 3/4″ M/NPT (F-45500LHN-12)
Monitor low-flow water systems with confidence using the Blue-White F-45500LHN-12 Flow Meter. Designed for accurate, easy-to-read flow indication, this variable area flow meter features a durable polysulfone body, corrosion-resistant internal components, and a direct-reading scale for simple system checks. Its compact inline design is ideal for pool, spa, water treatment, and equipment applications where dependable flow monitoring is needed in tight installation spaces.
Built with a 316 stainless steel float and guide rod, this flow meter provides reliable performance in demanding water-handling environments. Union-style connections help simplify installation and maintenance, while the permanent scale allows quick visual confirmation of flow rate.
Features
- Measures flow from 0.5 to 5.0 GPM
- Dual scale: GPM and LPM
- Durable polysulfone meter body
- 316 stainless steel float and guide rod
- Direct-reading permanent scale for easy flow checks
- Compact inline design for tight equipment areas
- Union connections for easier installation and service
- Designed for water flow applications
- Recommended for indoor or protected installations
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Blue-White |
| Model | F-45500LHN-12 |
| Series | F-450 / F-450N |
| Product Type | Variable Area Inline Flow Meter |
| Flow Range | 0.5 to 5.0 GPM |
| Metric Flow Range | 2.0 to 20.0 LPM |
| Connection Size | 3/4″ M/NPT |
| Mounting Style | Inline / vertical mount |
| Body Material | Polysulfone |
| Float Material | 316 Stainless Steel |
| Guide Rod Material | 316 Stainless Steel |
| O-Ring Material | FKM / Viton |
| Full Scale Accuracy | ±4% |
| Maximum Working Pressure | 175 PSI @ 70°F |
| Maximum Fluid Temperature | 212°F @ 0 PSI |
| Maximum Pressure Drop | 2 PSI |
| Calibration Fluid | Water, specific gravity 1.0 |
| Approx. Shipping Weight | 0.5 lb. |
Includes
- Flow meter
- Instruction manual





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