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Piston type water meter RNK-RP-N

The RNK-RP-N is a Volumetric rotary-piston meter for cold potable water with protected dial and brass body.

Our RNK-RP volumetric piston meters series with protected dial is a million fold proved combination of high-precise measuring insert with a rugged casing and performs perfectly the measurement of potable water. A very low starting flow and reliable performance are its main features.

The protected roller register is reliably readable even under demanding climatic conditions. A filter is including. The construction principle of the RNK-RP-N with direct transmission from the measuring chamber to the register ensures by standard protection against magnetic or other manipulation attempts or interference. The by default integrated check valve ensures additional a backflow prevention (on request without integrated backflow preventer).

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Product images

Piston Type Water Meter RNK-RP-N with protected rollers
Piston Type Water Meter RNK-RP-N with protected rollersPiston Type Water Meter RNK-RP-N with pulserPiston Type Water Meter RNK-RP-N with pulserPiston Type Water Meter RNK-RP-N


Piston type water meter RNK-RP-N


  • Rugged and intelligently conceived
  • Counter with protected rollers
  • Body made from high-quality brass
  • Operating pressure PN16
  • Display range 0,02 l to 9.999 m³
  • Proven accuracy in any installation position
  • Optional with integrated tamperproof check valve
  • Other versions and lengths of volumetric meters up to DN 40 available on request
  • According to ISO 4064 and MID 2014/32/EU


  • For the consumption measuring of cold potable water up to 50 °C

AMR options

  • Retrofitable with pulser 0,5 l/pulse (DN 40 5l/pulse)

Product options

Nominal Diameter (inch)
  • 1 1/2"
  • 1 1/4"
  • 1"
  • 3/4 "
Length without connectors
  • 115 mm
  • 165 mm
  • 190 mm
  • 260 mm
  • 300 mm
Housing Material
  • Brass
  • Cold water up to 50° C
Specified Units on Display
  • Cubik Meters (m³)
Nominal Diameter DN (mm)
  • DN 15
  • DN 20
  • DN 25
  • DN 32
  • DN 40
Operating pressure (max.)
  • MAP 16
Measuring Principle
  • Positive Displacement Meters
Nominal Flow Q3 (≈ Qn)
  • Q3=1,6 (≈ Qn 1)
  • Q3=10 (≈ Qn 6)
  • Q3=16 (≈ Qn 10)
  • Q3=2,5 (≈ Qn 1,5)
  • Q3=4 (≈ Qn 2,5)
  • Q3=6 (≈ Qn 3,5)
Metrological Class horizontal (max.)
  • R 160
  • R 200
AMR Technologies
  • Reed Pulser
  • Wet Dial with protected Rollers


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