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Product Specifications:
| Item | Flow Switch |
| Application | Large Pipe Applications Including Heating And Hydronic Systems, Air Conditioning, Refrigeration And Process Work |
| Connection | 1 1/4" NPT |
| Connection Size | 1 1/4" |
| Connection Type | NPT |
| Contact Rating (ac) | 22.2A @ 240V (Locked Rotor), 3.7A @ 240V (Full Load), 44.4A @ 120V (Locked Rotor), 7.4A @ 120V (Full Load) |
| Enclosure Rating | NEMA 1 |
| Flow Rate - Maximum | 4.8 GPM |
| Flow Rate - Minimum | 4.8 GPM |
| Flow Rate Range | 4.8 GPM |
| Flow Switch Type | Paddle |
| For Pipe Size | 1 1/4", 16" |
| Housing Material | Brass |
| Housing/body Material | Brass |
| Max. Ambient Temp. | 300°F |
| Max. Flow Gpm | 7.7 |
| Max. Flow Gpm | 7.7 GPM |
| Max. Flow Rate | 4.8 GPM |
| Max. Media Temp. | 300°F |
| Max. Pressure | 300 psi |
| Media Temp. Range | 32°F to 300°F |
| Min. Ambient Temp. | 32°F |
| Min. Flow Rate | 4.8 GPM |
| Min. Flow Rate (gpm) | 4.8 GPM |
| Min. Fluid Temp. | 32 F |
| Min. Media Temp. | 32°F |
| Set Point Configuration | Adjustable |
| Switch Enclosure | NEMA 1 |
| Switch Type | SPDT |
| Type | Industrial, Heavy Duty Liquid Flow |
| Voltage | 120/240V AC |
| Wetted Material | Brass, Bronze, PTFE, Stainless Steel |
Shipping Info:
| Ship weight (kg) | 2.41 |
| Ship height (cm) | 13.72 |
| Ship length (cm) | 30.23 |
| Ship width (cm) | 19.3 |
| HS code | 9032896060 |
| Country of Origin | US |
Product Details:
- McDonnell and Miller 119700 FS7-4 liquid flow switch is a single pole, double throw snap switch equipped with a NEMA 1 switch enclosure. It can operate at temperatures up to 300 degrees Fahrenheit and pressures up to 300 psi and is ideal for heavy-duty industrial applications.
Product Variants
| Product | Model | Connection Size | Housing Material | For Pipe Size | Min. Flow Rate | Max. Flow Rate | Switch Enclosure | Max. Pressure | Media Temp. Range | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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FS-200-W | 1" | Steel | - | - | 14.8 GPM | - | 160 psi | - | €1,152.49 | |
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FS-204-W | 1" | Aluminum | - | - | - | - | 160 psi | - | €767.59 | |
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AF-1 | 8" | Aluminum | - | - | - | NEMA 1 | - | 32°F to 300°F | €597.41 | |
![]() |
FS4-3 | 1" | Stainless Steel | 1" | 6 GPM | 10.2 GPM | - | 160 psi | 32°F to 300°F | €590.62 | |
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FS8-W | 1" | Stainless Steel | 1" | 4.9 GPM | 17.6 GPM | NEMA 4X | 160 psi | 32°F to 225°F | €634.65 | |
![]() |
FS1 | 1/2" | - | 1/2" | - | - | - | 100 psi | 32°F to 225°F | €960.55 | |
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QVE1900U | 1" | Stainless Steel | 1 1/4", 8" | 6 GPM | - | NEMA 4 | - | -4°F to +248°F | €288.91 |
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Contact us
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MCDONNELL & MILLER FS7-4 119700 Flow Switch, 1-1/4 Inch NPT, 300 Psi, 120/240V
€1,066.83 /unit




