Nanjing Saiko Controls Co.Ltd
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Water Flow Switch
This is an independently mounted water flow sensing device that makes or breaks an electrical circuit when flow stops or starts.
Application: WFS Liquid Switches are Single-Pole-Double-Throw(SPDT) flow switches that are used in liquid lines carrying water, ethylene glycol,or other liquid not classified as hazardous.They can be wired to energize one device or powered from the same source when liquid flow wither exceeds or drops below the set flow rate.
Specifications
| Model | WFS25 | |
| Max.Pressure od Fluid | 10 Bar | |
| Temperature of Fluid | Min. | 4ºC |
| Max. | 120ºC | |
| Ambient Temperature | 120ºC | |
| Adjust Mode | Adjust with the adjusting screws under the cover | |
| Connecting Mode with Water Pipe | 1''Piping Screw Thread | |
| Flow Rate | See the Above Rate Sheet | |
| Materials | Casing and Cover | Stretching Steel Sheet |
| Connecting Pipe | Brass | |
| Internal Components | Brass and Phosphor Bronze | |
| Water Valve | Phosphor Bronze | |
| Rated Current, Voltage | 15(8)A,220V AC | |
| 1'' | 11/4'' | 11/2'' | 2'' | 21/2'' | 3'' | 4''* | 5''* | 6''* | 8''* | ||
| Minimum | Flow increase | 1.0 | 1.3 | 1.7 | 3.1 | 4.1 | 6.2 | 15 | 28 | 43 | 85 |
| 1-3 close | - | - | - | - | - | - | 8.5 | 13 | 17 | 47 | |
| Flow decrease | 0.6 | 0.8 | 1.1 | 2.2 | 2.8 | 4.3 | 11 | 23 | 36 | 73 | |
| 1-2 close | 6 | 9 | 12 | 39 | |||||||
| Maximum | Flow increase | 2.0 | 3.0 | 4.4 | 6.6 | 7.8 | 12 | 29 | 56 | 85 | 173 |
| 1-3 close | 18 | 27 | 33 | 94 | |||||||
| Flow decrease | 1.9 | 2.8 | 4.1 | 6.1 | 7.3 | 11.4 | 28 | 53 | 82 | 116 | |
| 1-2 close | (15) | (23) | (43) | ||||||||
| 17 | 25 | 31 | 91 |