Description
McDonnell & Miller 120601 FS8-W – 1" NPT NEMA 4X Liquid Flow Switch, SPDT
Durable Flow Switch with Adjustable Sensitivity and Multiple Paddle Sizes
The McDonnell & Miller FS8-W is a rugged 1" NPT liquid flow switch designed for reliable flow detection in general-purpose and harsh environments. Featuring a NEMA 4X-rated enclosure, it’s dust-tight, water-tight, and corrosion resistant, ideal for commercial and industrial applications.
Built with a sealed Monel bellows and a single pole, double throw (SPDT) snap switch, the FS8-W comes complete with four stainless steel paddles (1", 2", 3", and 6") to fit a wide range of pipe sizes. The sensitivity adjusting screw allows fine-tuning for precise flow detection.
Key Benefits:
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NEMA 4X rating for protection against dust, water, and corrosion
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Includes four paddles to fit 1", 2", 3", and 6" pipe sizes
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Sealed Monel bellows for long-lasting, reliable operation
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Easy flow sensitivity adjustment
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Compatible replacement for Potter/Taco, Watts, Penn, and similar models
Applications:
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HVAC systems
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Industrial process control
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Water and liquid flow monitoring in harsh environments
Specifications
| Attribute | Details |
|---|---|
| Part Number | 120601 FS8-W |
| Product Type | Liquid Flow Switch |
| Connection Size | 1" NPT Threaded |
| Switch Type | Single Pole Double Throw (SPDT) |
| Enclosure Rating | NEMA 4X |
| Paddle Sizes Included | 1", 2", 3", 6" (25, 50, 80, 150 mm) |
| Temperature Range | 32°F to 225°F (0°C to 107°C) |
| Max Pressure | 160 PSI (11.3 kg/cm²) |
| Replacement For | Potter/Taco, Watts, Penn NEMA 4X Flow Switches |
