Paddle Type Flow Control Switch HFS-20
Introduction:
HFS paddle type (also known as vane type) flow control switch adopts paddle type sensor, can be used as a control or an alarm in water cooling system, lubricating oil system or other fluid circuit. The set value is adjustable, the user can adjust it according to his needs.
Due to the plug-in structure, it is especially suitable for large-caliber flow monitoring. Different pipe diameters are equipped with different paddle numbers. There are five stainless steel paddles for users to choose. HFS water flow switch adopts micro-switch output, so it has high accuracy and good reliability. It is an economical flow control switch, which is widely used in central air conditioning, boiler, fire fighting, water treatment and other fields.
Technical Parameters:
- Working medium: water, oil or other non-corrosive liquid to copper
- Working pressure: 1.0MPa
- Medium temperature: 1～100℃
- Contact point life: 1000K Cycle
- Protection level: IP54
- Body material: brass or stainless steel
- Target material: stainless steel
| Rated Voltage (V) | Power Factor | 125V | 250V |
| Rated Current (A) | 1 | 15 | 15 |
| Constant Induced Current | 0.75 | 3.5 | 2.5 |
| Instantaneous Induced Current | 0.45 | 21 | 15 |
| Model | Interface Size | Paddle Quantity
(Stainless Steel) |
Factory Setting（N） | Airtight Test Pressure （Mpa） | |||
| Cutting-off | Connecting | ||||||
| Max | min | ||||||
| HFS-15 | G1/2＂ | 3 | 0.5 | 1.5 | 1.6 | 1.0 | |
| HFS-20 | G3/4＂ | 3 | 0.5 | 1.5 | 1.6 | 1.0 | |
| HFS-25 | G1＂ | 5 | 0.5 | 1.5 | 1.6 | 1.0 | |
| Pipe Size
(inch) |
Flow control range when switch is on | |||
| Minimum | Maximum | |||
| Reduced Flow | Increased Flow | Reduced Flow | Increased Flow | |
| 1 | 18 | 21 | 45 | 50 |
| 1~1/2 | 30 | 35 | 100 | 105 |
| 2 | 50 | 58 | 150 | 155 |
| 2~1/2 | 75 | 86 | 187 | 200 |
| 3 | 100 | 115 | 225 | 260 |
Dimensions:
Inner Parts Pictures:
