Magnetic water flow switch is used in the control of water circulation, water charging and discharging, water heating, water pump switch on and off of solenoid valve, or powering on and off of water discharging for electric water heater, solar energy water heater, air condition and other water systems.
Specification
Model | CHN-MR-2253 |
Thread | G1/4" |
Max Contact Power | 50W |
Max Operating Flow Rate (Optional) | 15L/min, 30L/min, 50L/min |
Max Switch Voltage | 350VDC/ 300VAC |
Min Break Down Voltage | 500VDC |
Max Switch Current | DC0.7A/ AC0.5A |
Max Carry Current | 2.5A |
Max Contact Resistance | 100mΩ |
Min Insulation Resistance | 1010Ω |
Contact Life | 107 Times |
Operating Temperature | -1 ~ +85℃ |
Applicable Environment Temperature | -40 ~ +125℃ |
Min Flow Rate | ≥1.5L/min |
Max Carry Pressure | 1.2MPa |
Dimensions

Tips: Magnetic water flow switch in central air conditioning system
The water flow switch is installed on the water outlet of the central air conditioning, which can prevent the host from running without load. If the water is insufficient, the flow switch will sense the corresponding flow rate and convert the flow signal into switch action, which will stop the main machine. In addition, the water flow switch should be installed on the evaporator outlet pipe. If it is installed on the intake pipe, when the pipe between the water flow sensor and the evaporator leaks, it will lead to the flow switch failure. And if the flow sensor is installed on the evaporator outlet pipe, the flow of the switch must be close to the main engine when it is in normal operation. If any part of the pipe leaks, the water flow switch will act to shut down the host without enormous losses.
Magnetic water flow switch for sale at low price, G1/4 thread, 50W, flow rate 15, 30, 50 L/min available. This water flow sensor consists of magnetic core, external case and reed switch, which is used in different water systems.