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Product Specifications:
| Item | Flow Switch |
| Ac Contact Rating | 22.2 A @ 240V (Locked Rotor), 3.7 A @ 240V (Full Load), 44.4 A @ 120V (Locked Rotor), 7.4 A @ 120V (Full Load) |
| Connection Size | 1" |
| 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) |
| Flow | 6-10.2 GPM |
| Flow Switch Type | Paddle |
| For Pipe Size | 1" |
| Housing Material | Stainless Steel |
| Housing/body Material | Stainless Steel |
| Max. Flow Rate | 10.2 GPM |
| Max. Media Temp. | 300°F |
| Media Temp. | 32°F to 300°F |
| Min. Ambient Temp. | 32°F |
| Min. Flow Rate | 6 GPM |
| Min. Media Temp. | 32°F |
| Overall Height | 8 2/5" |
| Overall Length | 3 2/5" |
| Overall Width | 3" |
| Product Datasheet | mcdonnell-miller-fs4-3ds.pdf |
| Set Point Configuration | Adjustable |
| Switch Type | SPDT |
| Wetted Material | Stainless Steel |
Shipping Info:
| Ship weight (kg) | 0.86 |
| Ship height (cm) | 21.34 |
| Ship length (cm) | 8.64 |
| Ship width (cm) | 7.62 |
| Country of Origin | US |
Documentation:
Product Variants
| Product | Model | Media Temp. | Max. Flow Rate | Overall Width | Min. Flow Rate | Overall Height | Max. Media Temp. | Housing Material | For Pipe Size | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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FS4-3DS | 32°F | 10.2 GPM | 3" | 6 GPM | 8 2/5" | - | - | 1" | - | RFQ
|
![]() |
FS4-3RP-T | +32°F to +300°F | 10.2 GPM | 3" | 6 GPM | 8 2/5" | 300°F | - | 1" | €753.23 | |
![]() |
FS4-3T3-3/4 | 32°F | 4.5 GPM | 3" | 2 GPM | 6.9" | - | - | 3/4" | - | RFQ
|
![]() |
FS5-D-3/4 | 32°F | 15 GPM | 3 1/5" | 1.5 GPM | 5.1" | - | Brass | 3/4" | - | RFQ
|
![]() |
FS4-3D | 32°F to 300°F | 10.2 GPM | 3" | 6 GPM | 8 2/5" | 300°F | - | 1" | €937.65 | |
![]() |
FS7-4SE | 32°F to 300°F | 7.7 GPM | 4 3/5" | 4.8 GPM | 13 4/5" | 300°F | Brass | 1 1/4" | - | RFQ
|
![]() |
FS7-4D | 32°F to 300°F | 7.7 GPM | 2.9" | 4.8 GPM | 13 3/5" | 300°F | Stainless Steel | 1 1/4" | €1,417.87 |
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Contact us
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MCDONNELL & MILLER FS4-3S 114641 Flow Switch, 1 Inch NPT, 160 Psi, Stainless Steel
€1,787.95 /unit






