The Best Flow Sensors

Looking for the best Flow Sensors?

Discover now our comparison of the best Flow Sensors. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Flow Sensors are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Flow Sensors in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

No. 1

GREDIA 1/4" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter Connect Hosepipe 0.3-6L/min

Connect to a hosepipe whose inner diameter is about 5 to 7 mm( G1/4 inch connector)
Flow range: 0.5-3L/min, Water Pressure: ≤0.8Mpa
Working voltage: DC 5-24 V, F=(98*Q)±3%, Q=L/Min
Material: food grade plastic, all raw materials conform to the ROHS test standard
Wide application: It is mainly used in water heater, coffee machine, water purifier, drinking fountain, beverage machine, campus smart card equipment, etc.

No. 2

GREDIA 1/2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 1-30L/min

Connect to G1/2 inch BSPT male thread, hall effect
Flow range:1-30L/min, Water Pressure: ≤1.75Mpa
Working voltage: DC 5-24 V, F=（7.5*Q）±2%, Q=L/Min
Material: food grade plastic, all raw materials conform to the ROHS test standard
Wide application: It is mainly used in water heater, coffee machine, water purifier, drinking fountain, beverage machine, campus smart card equipment, etc.

No. 3

GLX-FLO-RP Flow Switch Assembly Compatible with Hayward Goldline Aquarite Salt Systems, Pool Flow Sensor for Aqua Rite Swimming Pool Salt Cell and Chlorine Generator, 15 FT Cable Pool Flow Switch

Replacement Parts : GLX-FLO-RP flow switch can compatible with all Hayward Goldline & Aqua Rite salt systems, GLX-FLO-RP flow switch replacement can be used with Goldline Aquarite salt turbo cell and Chlorine Generator. The part GLX-FLO-RP assembly replaces GLXFLORP, GLX-FLO-HP, OPT-F/S. Although the model name is different. They are universal
Widely applicable: The flow switch GLX-FLO-RP suitable for all Hayward Goldline Aquarite salt cell and chlorine generator systems. Flow switch GLX-FLO-RP compatible with all hayward goldline & Aquarite salt system series. Like :Aqua Rite, Aqua Rite Pro, Pro Logic, Aqua Logic, Aqua Plus, Aqua Rite XL, Mineral Springs Mineral Springs MS10/MS11,H40, SwimPurePlus, SplashCLEAR, SmartPure, Splash SP-40, OmniLogic, Omni Hub, OnCommand...List some but not all
Product Information: The GLX-FLO-RP flow switch uses standard 1/2'' threads and our part GLXFLORP flow sensor assembly with 15-Foot Cable. One end is a standard Phone Jack connection and can easily plug in the control panel of your pool salt chlorinator system, meanwhile the water flow sensor GLX-FLO-RP has a circle gasket and a round of waterproof tape. Both of them can ensure better sealing
Automatic Protection: The pool water flow switch can monitor the water flow in real time.If no water flow is detected, it will automatically shut down the salt system to prevent the salt cell from being damaged.Flow sensor GLX-FLO-RP can fix "NO FLOW" situation and it's easy to install. Just insert the two ends of the flow switch with cable into the correspondingly correct positions. Unplug existing (old) flow sensor, wrap enough tape and screw the switch into Run pump, don't overtighten it
Not only"GLX-FLO-RP": We believe that our GLX-FLO-RP swimming pool flow switch can help you better enjoy the swimming pool in summer. At the same time, We offer 2 year Warranty of our pool flow switch

SaleNo. 4

JESSINIE 2Pcs YF-S201C DC3.5-24V G1/2" Transparent Flow Sensor Turbine Flowmeter Water Flow Sensor Transparent Water Flow Meter YF-S201C Range 1-30L/min

The flow sensor mainly consists of a plastic valve body, a water flow rotor assembly, and a Hall sensor.
The product has a lightweight and flexible appearance, small size, and is easy to install. The impeller is internally inlaid with stainless steel beads, which is wear-resistant. Design of lines and isolation from water.
Valve body is made of transparent material to facilitate observation of water flow and rotor conditions. All raw materials meet testing standards.
Working voltage range: black version DC3.5-12V; Transparent DC3.5-24V; Load capacity: ≤ 10 mA (DC 5V); Allowable pressure resistance water pressure below 1.75Mpa
Scope of application: Suitable for water heaters, card readers, automatic water dispensers, and other flow metering equipment

SaleNo. 5

Malictele Flow Switch, GLX-FLO-RP for Hayward Goldline Aquarite Salt System Pool Flow Sensor Suitable Hayward Salt Cell and Chlorine Generator with 15ft Cable Pool Flow Switch

Product Information: Hayward GLX-FLO-RP Flow Switch Assembly, sensing piece is made of high quality plastics for longer service life,15-Feet Cable,comes with waterproof tape
Compatible Models:This pool flow switch is compatible with Hayward salt chlorine generator systems including Aqua Rite, Hayward Pro Logic, Mineral Springs MS10/MS11, Aqua Logic, Swimpure +, H-40, Aqua Plus, Aqua Rite XL, Aqua Rite Pro, Replaceable models: GLXFLORP, GLX-FLO-RP, Q-12DS-C2, GLX-FLO-HP, OPT-F/S
Easy Installation: The GLX-FLO-RP flow switch uses standard 1/2'' threads Simply screw the pool flow switch into the tee housing (not included) with enough tape and plug in the phone jack cable at the controller, this quick and easy process will turn the "no flow" warning light off in minutes
Reliable Quality: The Hayward Salt Chlorine Generation System Flow Switch Assembly is made of high quality materials to ensure long life and reliability, this flow switch guarantees consistent performance and peace of mind
Hassle-Free Purchase: Every pool flow switch for Hayward Salt Systems comes with a 12month warranty, so if you have any questions, please feel free to contact us for assistance

No. 6

SENSTREE G1/2 ’’ Flow Hall Sensor with NPT Thread, 1-30L/Min Flow Meter, Flowmeter Counter, Arduino, Raspberry Pi, and Reverse Osmosis Filter Compatible

NPT Thread
1-30L/min
The Water Flow Sensor is light, has a nimble outline, small, and is easy to install—the bearings used in the rotating part.
There is an integrated magnetic hall effect sensor that outputs an electrical pulse with every revolution. The hall effect sensor is sealed from the water pipe and allows the sensor to stay safe and dry.
Installed by flow direction in the product, otherwise, there is no signal output.
It is mainly used in water heaters, coffee machines, water purifiers, drinking fountains, beverage machines, campus smart card equipment, etc.

SaleNo. 7

GLX-FLO-RP Flow Switch Assembly, Pool Flow Sensor Compatible with Goldline and Aquarite Salt Systems Pool Flow Switch with 15 ft. Cable

Part number: GLX-FLO-RP Pool flow switch replace GLX-FLO-HP, Q-12DS-C2, OPT-F/S, GLXFLOP
Compatible model: Pool flow sensor compatible with : Aqua Rite, Aqua Rite Pro, Aqua Rite XL, Aqua Logic, Aqua Plus, Pro Logic, Mineral Springs Mineral Springs MS10/MS11,H40, SwimPurePlus, SplashCLEAR, SmartPure, Splash SP-40
Function: Pool flow sensor with 15 feet long cable detects water flow to protect your saltwater system, automatically controls pump operation when flow rate drops below safe levels
Simple installation: Screw the salt system flow switch into the tee housing (if there is a leak, use the supplied waterproof tape to wrap the threads before screwing it in) and plug the other end of the telephone line into the controller
If you have any problems please kindly contact us by logging in your Amazon Buyer Account , Find your order and click Contact Seller we will respond you in one business day.

No. 8

Navien 30008571A Flow Sensor

SaleNo. 9

CRC 05110 Mass Air Flow Sensor Cleaner - 11 Wt Oz.

Increases Horsepower And Improves Air/Fuel Ratio And Mpg
Plastic Safe-Dries In Seconds
Not Voc Compliant For California & Otc
Use Every Time You Clean Or Change Your Filter

No. 10

DIGITEN FS-C02 G3/4" BSP Male Thread Brass Water Flow Switch 1-30L/min, 0-2A/ 0-220V(AC or DC)

🌟🌊【Safe and Reliable】This flow sensor switch is made of brass, all materials are in line with ROHS testing standards. It's a safety device that shuts off the current to the device (heaters, pumps, etc.) when it senses no water flow.When connecting the load, please add a relay.
🌟💧【Thread type: 3/4" BSP Male Thread】 The flow sensor `s male thread external diameter: 25.85mm.It is fit in NPT Thread if you connect them with teflon
🌟🌊 【Easy to install 】Our flow sensor is waterproof, heat resistance, pressurresistance, cold resistance, small size, stable and reliable.
🌟💧 【Specification】Operation voltage of this flow sensor is : 0-220V(AC or DC), Working current: 0-2A, max working pressure: 1.75 MPa. Flow range: 1-30L/min.
🌟🌊 【Widely Applications 】This water flow sensor switch can be use for Water heaters, pumps, hot tub, boiler, water dispensers, coffee machines, hot card machines, steam equipment, water system, the campus card sales, selling self-help water systems, water treatment equipment, cooling systems, mechanical equipment, instrumentation, pharmaceutical equipment.

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Last update on 2025-07-24 / Affiliate links / Images from Amazon Product Advertising API

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