Product Description
1. NOTE
Default Parameters
Power Supply: Passive switch, no external power required
Signal: Passive switch signal / Normally open
Type: Magnetic type and spring type
Connection Types: Dual male thread, dual female thread, male inlet/female outlet, female inlet/male outlet
Specifications:
G1/4 : Flow rate: 1.5L/min, Temperature resistance: -10~70°C
G3/8 : Flow rate: 1.5L/min, Temperature resistance: -10~70°C
G1/2 :
Magnetic type: Flow rate: 1.5L/min, Temperature resistance: -10~70°C
Spring type: Flow rate: 1.8L/min, Temperature resistance: -10~120°C
G3/4 :
Magnetic type: Flow rate: 2.5L/min, Temperature resistance: -10~70°C
Spring type: Flow rate: 3L/min, Temperature resistance: -10~120°C
Important Notice:
The internal reed switch has small contacts and cannot directly drive loads. It should only be used as a signal output. When controlling contactors, motors, solenoid valves, water pumps, or alarms, an intermediate relay must be used. Direct loading will damage the water flow switch.
Please select the appropriate connection type before placing an order. If you need assistance, feel free to contact us.
2.Electrical Specifications
Parameter | Specification |
Signal Type | Passive switch signal / Normally open |
Load Voltage | 0~250V, AC/DC compatible |
Load Current | Max 0.3A (≤24V); Max 50mA (≤220V) |
Service Life | 100,000 cycles (≤24V), varies with 220V usage |
Electrical Usage Notice
The internal reed switch has small contacts and cannot directly drive loads. It should only be used as a signal output. When controlling contactors, motors, solenoid valves, water pumps, or alarms, an intermediate relay must be used to prevent damage to the switch.
3.Basic Parameters
Size | G1/4 | G3/8 | G1/2 | G3/4 |
Startup Flow (L/min) | 1.5 | 1.5 | 2.5 (Magnetic) / 1.8 (Spring) | 3 (Magnetic) / 3 (Spring) |
Max Flow (L/min) | 18 L/0.2MPa | 18 L/0.2MPa | 20L/0.2MPa | 25L/0.2MPa |
Operating Temp. (°C) | -10~70°C | -10~70°C | Magnetic：-10~70°C Spring：-10~120°C | Magnetic：-10~70°C Spring：-10~120°C |
Working Pressure (MPa) | 0.03~1.6 | |||
Installation Direction | Any direction | |||
Signal Wire Spec. | UL1007#22 350mm |
Specifications & Models
Size | Dual Male Thread | Dual Female Thread | Male Inlet / Female Outlet | Female Inlet / Male Outlet |
G1/4 | SK-2020-CL | SK-2121-CL | SK-2021-CL | SK-2120-CL |
G3/8 | SK-3030-CL | SK-3131-CL | SK-3031-CL | SK-3130-CL |
G1/2 (Magnetic) | SK-4040-CL | SK-4141-CL | SK-4041-CL | SK-4140-CL |
G1/2 (Spring) | SK-4040-CT | SK-4141-CT | SK-4041-CT | SK-4140-CT |
G3/4 (Magnetic) | SK-6060-CL | SK-6161-CL | SK-6061-CL | SK-6160-CL |
G3/4(Spring) | SK-6060-CT | - | - | - |
4.Applications
Smart home water systems
Water heaters and solar water heating
Water pumps and industrial fluid control
Agricultural irrigation and greenhouse automation
HVAC and cooling systems
5.FAQs
Q1. Does this sensor require a power supply?
A1.No, it is a passive switch that does not require any external power.
Q2. Can this switch directly control a pump or solenoid valve?
A2.No, it must be used with an intermediate relay for such applications.
Q3. What are the installation requirements?
A3.It can be installed in any direction. Ensure proper sealing to prevent leaks.
About Prime Living
Prime Living is a Canadian online store offering a carefully selected range of quality products for home, automotive, tools, outdoor living, electronics and more.
We are committed to fast order processing, secure packaging and reliable tracked shipping to provide an excellent shopping experience.
Shipping policy
We are always working hard to ensure your package arrives as soon as possible. Please understand that some factors like weather, high postal traffic, and the performance of shipping companies are outside of our control.
Returns
We offer a 14-Day Return Policy on items in which you are not completely satisfied with. You have the option of a full-refund or an exchange of the item.
Condition
Brand New
Shipping
This item is shipped directly from our supplier in China with tracking.