Water Meters

Water meters measure the cumulative volume of water passed through it in cubic metres of water. They are primarily classed by size and to ensure meter accuracy the flow rate must be within a specific range. The volume of water with vary with the diameter of pipe but with a 1 inch pipe (25mm) the ranges for each class are as follows:

  • Class A – 140 to 350 litres per hour
  • Class B – 70 to 280 litres per hour
  • Class C – 35 to 52 litres per hour
  • Class D – 26 to 40 litres per hour

  • There are 3 types of water meters:
    • Single Jet – water flows directly onto an impeller turbine.
    • Multi Jet – water flows on to multiple points on the impeller turbine and which aid reliability and longevity.
    • Volumetric – also known as positive displacement meters. They measure water volume by splitting the water into set fixed-volume amounts then counting the number to determine the total volume.

Read more Read less


Viewing 1 - 6 of 6 products
Results per page
Description Price Class Nominal Flow Rate Maximum Flow Rate Maximum Reading Connection Connection Gender Thread Size Thread Standard
RS Stock No. 211-0474
Mfr. Part No.WATM198854
A 2.5m³/h - 100000m³ 3/4 in BSP Male Male 3/4in BSP
RS Stock No. 211-0496
Mfr. Part No.WATM155804
C 3.5m³/h - 100000m³ 1 in BSP Male Male 1in BSP
RS Stock No. 399-5018
Mfr. Part No.GG-L12ASC02B051
A 1.5m³/h - 9999.9m³ 1/2 in BSPP Male Male 1/2in BSPP
RS Stock No. 897-7138
- - 70L/min - - - - -
RS Stock No. 399-5030
Mfr. Part No.GG-L31ASC02B051
A 15L/h - 9999.9m³ 3/4 in BSPP Male Male 3/4in BSPP
RS Stock No. 399-5046
Mfr. Part No.GG-DALC25P1
A, B 7m³/h - 9999.9m³ 1 in BSPP Male Male 1in BSPP
Related Products
RS Pro ILCM 03 is a great value ...
RS Pro ILCM 03 is a great value leakage current clamp designed for safe, non-intrusive AC current measurement upto 60 A. It offers five ranges, with high resolution 10 μA on the 40 mA range. Features include fast bar graph ...
RS Pro IPM3000N is a great value, 1000 ...
RS Pro IPM3000N is a great value, 1000 Aac power meter with features designed to suit HVAC and electrical maintenance applications. 10 000 count dual display LCDTrue rms current & voltage measurementTrue and apparent power and phase angle measurement (kW, ...
Back lit 7mm high 5 digit LCD display ...
Back lit 7mm high 5 digit LCD display (-19999 to 99999)Configurable analogue inputs: 4-20mA, 0-20mA, 1-5V d.c., -5 to +5V d.c. and -10 to +10V d.c., all fully scaleable so can be configured to represent a wide range of engineering ...
The codix 566 process controller with totaliser function, ...
The codix 566 process controller with totaliser function, displays measured values from all common strain-gauge inputs in high resolution. In addition, it can monitor and control 2 limit values.The controller is user-friendly and has a practical quick-start guide for setting ...