Water flow switch Water pump flow sensor

The automatic on/off water flow switch for pump, also known as the inline water flow sensor switch and the water pressure switch, is an automatic switch controller that uses a magnetic induction device to control on-off of the circuit, thereby realizing the start or stop of the controlled pump. The water flow switch controller is not a water pump and it  itself does not have a pressure boosting function,must work by connecting circulation water pump to drive water to flow .

Thread can be1/2″,3/4″,1″,etc.Can stand high temperature 80℃-90℃.AC220V, DC12V, DC24V, DC48V,DC110V.No leaking.
Model HT-60,HT-120,HT-200,HT-800,HT-801,HT-802,HT-2010.Support different pump power from 90W to 2000W.Also used for turn non-automatic pumps to become automatic pumps,applied to laser engraving machine, laser cutting machine, and other equipment with cooling system, circulation system,etc.Factory direct-sell.

Model A Standard type has following size available options:

• The power selected of the water flow sensor switch can not be less than the power of your water pump, you can buy a larger power switch. If the water pump is used in a hot water environment, it is recommended to buy an upgraded version which can support high temperature.
• Note that the start requirement of this water flow switch:
  1, the inlet pressure should be greater than 0.2bar (Kg);
  2, the water flow speed should be greater than 1.5L/min (LPM)

Model B Water flow sensitivity can be adjustable,its available size options as following:

• How to select the power water flow swich?  The power selected of the switch can not be less than the power of your water pump, you can buy a larger power switch. If the water pump is used in a hot water environment, it is recommended to buy an upgraded version which can support high temperature.
• How to operate water flow switch with sensitivity adjustabl? See below:

The sensitivity of the water flow switch is pre-adjusted when leaving the factory.They are suitable for most environments. Sometimes,if they are installed in special environments,they can not be used normally, then the sensitivity screw can be fine-tuned to achieve normal use.

When not starting, turn clockwise to the right and increase the sensitivity. When not stopping, turn counterclockwise to left to lower the sensitivity

Notice: When the faucet does not come out water, the sensitivity adjustment is no effect.

In addition to the different internal controlling components, the most intuitive difference between the two types is whether there is a thermal insulation brass cap.
1. Normal temperature type: (0-40 ℃) can be used for a long time, and the maximum temperature in a short time should not exceed 60 ℃.
2. High temperature type:(0-80 ℃) can be used for a long time, and the maximum temperature in a short time should not exceed 100 ℃.
For heating pipes or solar pipes, please choose high temperature type.
Both types are good water-proof perofrmance,no leaking in long working time.

The automatic water flow switch is widely used on heating boiler system,water heater device,solar water heating system,water pump retrofitting,laser engraving machine, laser cutting machine, and other equipment with cooling system, circulation system.It is also usually matched with contactors,relays,etc. to control other devices and equipments.

Use water flow sensor on the pressure booster pump : The interface connector of the water flow switch of this kind booster pump is generally 3/4 “to 1/2” and the water flow switch is connected to the water circulation pump. if you are not sure about the size, You can also take pictures and send them to us or measure it yourself. The power can be selected according to the power of your water pump. The power selected of the switch can not be less than the power of your water pump, you can buy a larger power switch. If the water pump is used in a hot water environment, it is recommended to buy an upgraded version which can support high temperature.

Non-automatic pumps can be retrofitted into automatic pumps, realize the result of the opening of the faucet, the start of the water pump; the turning off the water faucet, the pump stops. Or in a supply- heating environment, when need to supply heating. start the pressure water pump; when no need heating, the water pump turn off automatically , it can also protect the water pump from burning.It need to use the upgrated version–supporting high temperature water flow switch for heating. When retrofitting the self-priming pump, it is recommended to buy the water flow switch which power is higher because the self-priming pump`s actual power wil be generally greater than the marked power.

The premise to retrofit pump: the water pump is used in the environment where the tap water is pressurized or the water tower supplies water from top to bottom. It cannot be used for pumping well water or water in buckets after retrofitting! ! ! If you want to refit the water pump for pumping well water or pumping water in a bucket, you need to refit it with a pressure switch (you can email to us).

Applied to laser engraving machine, laser cutting machine, and other equipment with cooling system, circulation system.. Use the water flow switch to collect on-off signals and transmit them out, link and control system to achieve the purpose of controlling Or cooperating with contactors, relays, etc, to control other equipments. The main model used is 1/2″ 12V-24V,. 1/2″ 0-110V 0.2A,1 inch 0-110V 0.2A,and 1.2 inch 0-110V 0.2A.

The water flow switch is usually matched with contactors,relays,etc. to control other devices and equipments. Or used in controlling cabinet, circuit design and other applications, to achieve automatic controlling, linkage controlling.

If it is used in other usage scenarios, you can send email and consult us to see if it can work or not.

How to connect a flow switch to a pressure boosting water pump?

If you want to equip the switch onto the circulation booster pump,just insert the original plug into the socket as below:

How to wire water flow switch and other general water pump?

If you want to connect the switch with other types water pump,please refer to the below image:

Note: Electricians should not use multimeters to measure on-off without electricity!! The resistance value is too low to measure, and the water flow switch must be connected in series.

• The switch is available for retail and wholesale;
• The place of origin is in China,when you buy one or two,please consider freight(by air or by sea) into the cost;
• Accept bulk order with Container delivery;
• Please contact us online (click here) Or send inquiry message to our email:  sale@smartclima.com

What is a water flow switch? And how does a water flow switch work?

The on/off water flow switch for the pipeline booster pump is an automatic water flow switch,it adopts the water flow magnetic control device to control the on-off of the induction element, so as to achieve the function of starting and stoping the water pump. This product has a wide range of uses, mainly suitable for household tap water booster in low water pressure areas, especially for low-pressure ignition of showers, which is more important for laser equipment and environmentally friendly ozone equipment.the Water flow switch controller with model HT-60,HT-120,HT-200,HT-800,HT-801,HT-802,HT-2010 has following features:

Technical features:

1.Stable.In the design, the induction chamber, the magnetron chamber, and the electronic component chamber are separated to avoid the iron-containing materials in the pipeline from being adsorbed by the magnetic materials to avoid switch failure.
2. Withstand high temperature.It is produced with high-temperature resistant materials, so that the products can be used under hot and cold water conditions.
3.Start with low water pressure.The return spring is made of high-quality stainless steel material to achieve the effect of turning on the water pump at low water pressure.
4. Safety: Electronic components are used as control devices to make the product spark-free and fully enclosed during use.

Working principle:

Turn on the water equipment, there is water flowing in the pipeline, and the water flow impulse sensor door rotates along the shaft in the direction of the water flow. The magnetron device rotates with the shaft. When it reaches a certain position, the sensor element is triggered, the switch is turned on, and the household pipeline booster pump starts. When the water flow is interrupted with the shutdown of the water-using equipment, the induction door, under the action of the return spring, drives the shaft and the magnetic control device to rotate together to a certain position, the induction fails, the switch is disconnected, and the household pipeline booster pump stops running.

Technical indicators:

Medium used: tap water or similar liquids with similar physical and chemical properties.
Medium pressure: <0.6Mpa
Medium temperature: Commen type≤60℃； High temperature type≤100°C
Conditions of use: the pressure of water inlet is at least greater than 0.3kg and the water flow speed is at least 2L/min;

Precautions for the use of water flow switch:

1.When installing, pay attention to whether the water flow direction of the pump and the water flow switch is the same. The arrow on the water flow switch points to indicate the direction of the water flow switch.

2.When there are impurities in the tap water pipe, it will cause the water flow switch to fail. Therefore, it is recommended that the newly installed pipeline should be fully discharged to flush out the impurities in the pipeline before connecting to the water pump and the water flow switch. At the same time, it is recommended to install a filter in the pipeline, but the filter should be cleaned frequently to avoid water flow being blocked and the flow rate reduced, which will cause the switch to start and fail.

3.When the flow rate of tap water is insufficient or unstable, the staring and stoping of the water flow switch will cause the water pump to stop and start, and this phenomenon will automatically disappear when the flow rate of tap water is restored.

4. The base of the water flow switch is made of brass material, please do not come into contact with corrosive materials.

5. Do not extend external objects into the water flow switch pipeline to avoid failure.

6. Do not open the internal connector in the water flow switch nut to avoid leakage.

7. When the water flow switch fails, non-professionals should not disassemble it to avoid water leakage, which may endanger the human body from harming the environment.

Notice before purchase this Water flow switch controller for circulation booster pump:

① Use tap water, or draw water from bottom to top, and the height should not exceed 5 meters,because the switch works depens on water flowing;
② Don`t work for pumping water from tank or from well,because the switch works depens on water flowing;
③ If the water pressure is very small and the water flow is very slow, then it can not be used;
Conditions of use: the pressure of water at inlet is at least greater than 0.3kg and the water flow speed is at least 2L/min;
④ If water pump`s head lift exceeds 35 meters, use the flow switch with caution.
⑤ The power of the water flow switch must be greater than that of the water pump, or you need to equip an AC contactor to use.
⑥ The switch working for pump of AC220V and DC12V,DC24V,DC48V,DC110V pump,they are different types,before you purchase,please confirm your pump`s voltage..
⑦ If you want hot water flow switch for heating system,please choose upgraded version which is having inner brass cap instead plastic cap.It can support 100℃.

All switches are tested carefully and strictly before leave our factory,no leak,quality is assured!