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Products > Flow > Flow Switches > Explosion Proof Adjustable Paddle Flow Switch (Gas)
For pipelines from 1½" to 20", this paddle operated flow switch uses magnetic coupling to transmit the vane movement across a solid metal diaphragm to the electrical switch output. Suitable for general purpose use. They are supplied with a multi-layer vane suitable for all pipe sizes, on liquids or gases. Normal mounting is vertical, via a 1½" NPT Threadolet welded to the horizontal pipeline.
- Leak proof body machined from bar stock
- Installs directly and easily into pipeline with a threadolet, tee or flange
- High pressure rating of 1000 psi (69 bar) with the Brass body and 2000 psi (138 bar) with 316 Stainless Steel body
- Rugged construction
- Multi-layer universal vane
- ATEX approved
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| Specification |
| Body | 316 Stainless Steel or Brass, 1½" NPT fitting |
| Vane | 316 Stainless Steel |
| Mounting | Vertical ±5° to horizontal pipe |
| Maximum Pressure | Brass 70 bar, Stainless Steel 140 bar |
| Maximum Temperature | 135°C |
| Electrical Contact | SPDT switch |
| Rating | 10 Amp at 250V AC |
| Approval | ATEX II 2 G EEx d IIB T6 |
| Alarm Flow Rates |
| Pipe Diameter | Flow Rate (Nm3/hr) |
| 1 1/2" | 29 - 72 |
| 2" | 22 - 108 |
| 3" | 72 - 360 |
| 4" | 72 - 684 |
| 6" | 180 - 1620 |
| 8" | 432 - 2628 |
| 10" | 900 - 3960 |
| 12" | 1350 - 5760 |
| 14" | 2100 - 7920 |
| 16" | 2700 - 10800 |
| 18" | 4000 - 13680 |
| 20" | 4700 - 16920 |
| Available Models |
| Body | General Purpose | Explosion Proof |
| Brass | FFSV4B | FFSV4BC |
| Stainless Steel | FFSV4S | FFSV4SC |
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