- Model M and WMR - Irrigation Water Meters

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M and WMR Water Meters are the industry's smallest water meters. They offer the best cost, performance and long life. The M utilizes the multi-jet principle assuring an equally distributed load on the impeller minimizing wear and maintaining accuracy. The WMR contains an in-line axial turbine which allows foreign matter to pass through the meter without clogging. Wide clearances in the measuring chamber and negligible area of contact between static and moving parts are the main reasons for the high reliability of this design even in hard water. Available in 3/4', 1', 1 1/2' and 2' sizes.

  • Industry's smallest water meters provide ±2% accuracy over a wide range of flows.
  • Magnetically driven sealed registers are stainless steel encapsulated and guaranteed not to accumulate moisture or fog.
  • 'M' Water Meters utilize the multi-jet principle assuring an equally distributed load on the impeller minimizing wear and maintaining accuracy.
  • 'M' Water Meters have only one moving part, the impeller, is in contact with the water for minimum wear and the utmost reliability.
  • 'WMR' Water Meters contain an in-line axial turbine which allows foreign matter to pass through the meter without clogging.
  • Wide clearances in the measuring chamber provide full pipe flow measurements and high reliability.

  • For main supply lines in agriculture and landscape applications

Installation Requirements
'M' Water Meters

  • Dial face must be horizontal
  • There are no straight pipe installation requirements
  • Prior to installation of the meter, the pipeline should be thoroughly flushed
  • Meter must be installed so that the pipe will be full of water at all times during metering
  • To eliminate air in the system, continuous acting air vents of proper size and type are required

Installation Requirements
'WMR' Water Meters

  • The meter may be installed in any position - for non-horizontal positions, the flow should be upwards
  • Straight pipe installation requirement of 10 x diameter pipe upstream (before the meter) and 5 x diameter pipe downstream (after the meter)
  • Prior to installation of the meter, the pipeline should be thoroughly flushed
  • Meter must be installed so that the pipe will be full of water at all times during metering
  • To eliminate air in the system, continuous acting air vents of proper size and type are required

Specifications
'M' Water Meters

  • Iron Body Sizes: 3/4', 1' and 1 1/2'
  • Plastic Body Sizes: 3/4' and 1'
  • Maximum Working Pressure: 140 psi
  • Maximum Liquid Temperature: 122°F
  • Body Material: Corrosion Proof Copper Alloy or Polypropylene (plastic)
  • Connections: Male Pipe Thread
  • Register Options: Reed Switch or Photo Diode
  • Reed Switch Register Pulse Outputs: 0.1 or 1.0
  • Photo Diode Register Pulse Outputs: 0.0015, 0.0021 or 0.0074
  • Straight Pipe Installation Requirement: None

Specifications
'WMR' Water Meter

  • Size: 2'
  • Maximum Working Pressure: 230 psi
  • Maximum Liquid Temperature: 131°F
  • Body Material: Cast Iron with Polyester Coating
  • Connections: Male Pipe Thread
  • Register Options: Reed Switch, Photo Diode or MPE Digital
  • Reed Switch Register Pulse Outputs: 10 or 3.26
  • Photo Diode Register Pulse Outputs: 1.0 or 0.055
  • MPE Digital Register Pulse Outputs: 10 or 3.26
  • Straight Pipe Installation Requirement: 10 x D upstream and 5 x D downstream (D = meter size

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