G3&4" Water Flow Sensor

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Compact, Easy to Install High Sealing Performance Speed changes with different rate of flow High Quality Hall Effect Sensor

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Water flow sensor consists of a plastic valve body, a water rotor, and a hall-effect sensor. When water flows through the rotor, rotor rolls. Its speed changes with different rate of flow. The hall-effect sensor outputs the corresponding pulse signal. This one is suitable to detect flow in water dispenser or coffee machine.

We have a comprehensive line of water flow sensors in different diameters. Check them out to find the one that meets your need most.


  • Compact, Easy to Install
  • High Sealing Performance
  • High Quality Hall Effect Sensor
  • RoHS Compliant


  • Mini. Wokring Voltage: DC 4.5V
  • Max. Working Current: 15mA (DC 5V)
  • Working Voltage: DC 5V~24V
  • Flow Rate Range: 0~60L/min
  • Load Capacity: ≤10mA (DC 5V)
  • Operating Temperature: ≤80℃
  • Liquid Temperature: ≤120℃
  • Operating Humidity: 35%~90%RH
  • Water Pressure: ≤2.0MPa
  • Storage Temperature: -25~+ 80℃
  • Storage Humidity: 25%~95%RH

Technical details

Dimensions 100mm x60mm x38mm
Weight G.W 65g
Battery Exclude


HSCODE 9026100000
USHSCODE 9026102040
UPC 841454116110

G3/4 inch Water Flow sensor

Water flow sensor consists of a plastic valve body, a water rotor, and a hall-effect sensor.

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  • You have 14 flow meters and only one shows the thread type (M11) the rest appear to be BSP but there is no indcation of size. references to wikipedia BSP (beritish pipe thread) suggests its in UK units but some are in metric (M11). mm dimensions for BSP threadeds are not useful. We need to know if BSP, BFP, or the american or metric thread. Is the plastic body a polyethelene, acrylic, ABS, ? SKU threads description price flow max material 314150002 M11x1.25 M11*1.25 Water Flow Sensor 9.50 6L/min 0.8MPa black plastic ? 314150005 ? G1&2" Water Flow Sensor 9.50 30L/m 1.75MPa black plastic ? 314150003 26mm? G3&4" Water Flow Sensor 14.90 60L/m 2MPa black plastic ? 314150000 32.5mm? G1" Water Flow Sensor 15.90 100L/m 1.75MPa black plastic ? 101990055 ? G1&2" Water Flow Sensor 9.50 30L/m 1.75MPa clear plastic ? 314150001 ? G1&8" Water Flow Sensor 9.50 6L/m 0.8MPa white plastic ? 314150004 ? G5&4" Water Flow Sensor 29.50 120L/m 2MPa black plastic ? 114991177 ? Water Flow Sensor YF-B7 6.90 25L/m 1.75MPa brass 114991174 ? Water Flow Sensor YF-B4 6.90 25L/m 1.75MPa brass 114991176 ? Water Flow Sensor YF-B6 6.90 30L/m 1.75MPa brass 114991175 ? Water Flow Sensor YF-B5 6.90 30L/m 1.75MPa brass 114991172 ? Water Flow Sensor YF-B2 5.90 25L/m 1.75MPa brass 114991171 ? Water Flow Sensor YF-B1 5.90 25L/m 1.75MPa brass 114991173 ? Water Flow Sensor YF-B3 5.90 25L/m 1.75MPa brass 114991178 ? Water Pressure Sensor G1/4 12.90 1.2MPa metal Please try to tell us what size threads we need to connect these in a useful way.
    Question by: Mark Schafer on 2019-02-27 22:05:52

    Hi Mark, we sincerely thank you for your advice. We should have done this a long time ago. Sorry for the inconvenience, we will finish this in March.

    Answer by: admin on 2019-02-28 09:49:43