The water flow switch is installed on the water pipe through series connection or parallel connection,It is used hydraulic pressure (air pressure) to drive magnetic induction and convey switch signals.
The water flow switch send on or off signal according to the liquid flow volume, it is an important component of the fluid flow controls system.If the flow in the pipe is lager than start-up volume, the magnetic valve will be moved by the force of flow pressure, and then it will trigger the reed switch that same sealed in the vavle and send the signal . When the flow volume reduce lower than the start-up volume,magnetic valve core will be forced back to theoriginal place by the reset spring in the vavle.

  Jinhefeng industrial electrical co., ltd is devoting to designs and manufacture the sensing switch for more than 10 years .we have striven and now provides some of the best sensor solutions for liquid level, in addition to pressure and temperature measurement, for the most demanding float switch applications. Whether you need a single point float switch or continuous liquid level sensor, JHF Company can direct you to the proper float switch and liquid level sensor solution. Our Company offers standard float switch sensors in stock for same day shipment, and can also 

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Questions of customer
1: How soon can we get a sample of the sensing switch?
A : We have usual models(float switches in stock,it can be sent to you within 1-2 working days. and the order depend on how many pis you need.let us discuss it.

2: What is the payment terms?
A :We can accept T/T and L/C at sight payment.

3: Can the logo or company name or the pattern to be printed on the products or package?
A : Sure.Your ogo or company name or pattern can be printed on your products or package by printing,etching,or sticker,

4: Can we choose colr of the product?
A : Yes,please discuss with us.

5: Can package be change?
A : We have professional designer that can help you to design beautiful product
package for your product.

6: Can you help us to develope our own product?
A : OEM r oject is welcome, we have professional workshop for doing OEM project.

7: How can you guarantee quality of your product?
A : Quality is our life!And the level sensor are stable and reliable.
For every product, we have passed more than one hundredtime of inspection, because QC checking on each production process.

8: MOQ?
A :Usually for the special order (OEM) 100pcs is the least ,but for the usually products you can choose any piece,but we can also talk in detail.

Cautions
The pressure, temperature and electrical limitations shown for the specified level switches must not be exceeded.
The pressures and temperatures must take into consideration possible surges in the temperature and pressure of the system.
The liquids used must be compatible with materials of construction. Specifications of materials will be given upon request
Life expectancy of the switch varies with applications. Contact the factory if life cycle testing is required.
Ambient temperature changes can affect switch set points . Since specific gravities of liquids vary with temperature . Consult factory for assistance.
Level switches have been designed to be shock and vibration resistant. For maximum life .Both shock and vibration should be minimized. Consult factory for assistance .
Excessive contaminants in fluid may inhibit float operation .and occasional wipe down may be necessary
Level switches must not be field repaired.
Physical damage to product may render product unserviceable
Installation i vessel made from magnetic materials may affect operation.