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Bulk water meter WPD / WPHD

Woltman meter with impeller axis arranged in parallel to the flow direction

The WPD/WPHD bulk water meter is used to record high flows in drinking water distribution and industrial applications with low pressure loss.

All the materials used in the drinking water sector correspond to the required standards, directives and current Drinking Water Ordinance (German environmental ministry recommendation of hygienically suitable metal materials for drinking water, KTW guidelines and DVGW (worksheet W270).

Product images

Woltman bulk water meter WPHD
Woltman bulk water meter WPHDWoltman bulk water meter WPHDWoltman bulk water meter WPHD with EDC communication modulWoltman bulk water meter WPHD with EDC communication modul


Bulk water meter WPD / WPHD


  • Woltman parallel type
  • WPD (DN40 – DN150), WPHD (DN200 – DN300)
  • Optional WS overall length for DN50, DN65, DN80 and DN100 available
  • Optional ISO overall length for DN50, DN80 and DN100 available
  • For horizontal and vertical installation
  • Replaceable MID-compliant metrological unit
  • Highest precision and reliability even in case of low fl ow rates
  • Flood-proof hermetically sealed glass/copper register (IP68)
  • Low starting fl ow and high overload security
  • Wide measuring range, low pressure loss
  • Hydraulic bearing relief
  • Durable measuring stability
  • Swirl-reducing inlet
  • No straight inlet or outlet needed (U0/D0) according to OIML R49 and DIN EN ISO 4064
  • Optimally equipped for remote readout
  • Register rotatable 355°
  • Operating pressure MAP 16 (optionally MAP 10)
  • Approved in accordance with MID and OIML


  • For the consumption measurement of cold and clean drinking water or service water up to 50°C
  • For measuring the high fl ow

AMR Technologies

  • Retrofittable with reed pulser
  • Can be combined with stationary GSM system
  • As standard with communication interface for EDC modules (Electronic Data Capture):
    • EDC LPWAN radio module (868 MHz) for LoRaWAN®
    • EDC wireless M-Bus radio module according to OMS standard (868 MHz), EN 13757-4
    • EDC- combined M-Bus and pulse module

Product options

Measuring Principle
  • Woltman parallel
  • Dry Dial protection class IP 68 ("Copper Can")
Nominal Flow Q3 (≈ Qn)
  • Q3=25 (≈ Qn 15)
  • Q3=40 (≈ Qn 25)
  • Q3=63 (≈ Qn 40)
  • Q3=100 (≈ Qn 60)
  • Q3=250 (≈ Qn 150)
  • Q3=400 (≈ Qn 250)
  • Q3=1000 (≈ Qn 600)
  • Q3=1600 (≈ Qn 1000)
  • Q3=2500 (≈ Qn 1500)
  • Q3=630 (≈ Qn 400)
Nominal Diameter DN (mm)
  • DN 50
  • DN 80
  • DN 100
  • DN 125
  • DN 150
  • DN 200
  • DN 250
  • DN 300
  • DN 400
  • DN 500
Length without connectors
  • 200 mm
  • 225 mm
  • 250 mm
  • 300 mm
  • 350 mm
  • 450 mm
  • 500 mm
  • 600 mm
  • 800 mm
  • Cold water up to 50° C
Housing Material
  • Cast Iron (GGG)
Metrological Class horizontal (max.)
  • R 200
Operating pressure (max.)
  • MAP 10
  • MAP 16
Communication Technologies
  • Radio via LoRaWAN®
  • Radio via wireless M-Bus
  • Electronic Pulser
  • Reed Pulser
  • M-Bus
  • Radio Special System (GSM)
Specified Units on Display
  • Cubic Meters (m³)


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