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Metrys The Metrys wordmark, set in a high-contrast swash serif.
A Metrys R160 multi-jet dry-dial water meter with a black register cap, open lid and blue body with brass tailpieces.
A Metrys R160 multi-jet dry-dial water meter with the black lid open over the dial, on a blue body with brass threaded ends.
Multi-jet water meter, drawn illustration

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A Metrys R160 multi-jet dry-dial water meter with a black register cap, open lid and blue body with brass tailpieces.
A Metrys R160 multi-jet dry-dial water meter with the black lid open over the dial, on a blue body with brass threaded ends.
Multi-jet water meter, drawn illustration

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Water meters MJ-R160

R160 Multi Jet Dry Dial Water Meter

A dry dial multi-jet meter for connections from DN15 to DN40.

Nominal size
DN15
Q3 permanent flow
2.5 m³/h
R value (Q3/Q1)
160
Accuracy class
2

Select nominal size (DN)

Specifications update with the selected size.

DN15 ½″ DN20 ¾″ DN25 1″ DN32 1¼″ DN40 1½″

Documents

Download datasheet (Opens in a new tab)

Overview

Why buyers choose it

  • The counter never touches the water

    A magnetic coupling drives a sealed dry register, so silt and corrosion never reach the number wheels.

  • Not fooled by a magnet

    The drive is shielded against external magnetic fields, which closes the most common domestic tampering route.

  • Dial turns to the reader

    360° rotation means the meter is fitted to suit the pipe and still read without a mirror.

  • Sealed for revenue

    Supplied with wire and lead seal, so the installation is defensible when the bill is questioned.

In detail

A dry dial keeps the register out of the water altogether. The impeller drives it through a magnetic coupling, so the counter never sees the water it is measuring — no silt on the wheels, no corrosion on the spindle, and nothing to fog when the chamber is cold and the water is colder.

The register is vacuum sealed and rotates through 360°, so the meter goes in to suit the pipe and the dial is turned to face whoever has to read it. It is unaffected by external magnetic fields, which on a domestic scheme is the difference between a tamper-resistant meter and a meter with a known trick.

It covers DN15 to DN40 with permanent flows from 2.5 to 25 m³/h, holds class 2 accuracy across an R160 turndown, and is rated to 16 bar and 50 °C. A non-return valve is available where backflow into the main is a concern, and it is provided with wire and lead seal for revenue work.

Technical specifications

Selected size: DN15

Values shown apply to the selected size. A dash means the figure is not stated.

Metrological

Nominal size DN15
R value (Q3/Q1) 160
Accuracy class 2
Register type Multi jet, dry dial, vacuum sealed
Maximum permissible error, Q1 to Q2 ±5%
Maximum permissible error, Q2 to Q4 ±2% for water having a temperature ≤30℃; ±3% for water having a temperature >30℃
Indicating range 99,999
Resolution of indicating device 0.00005

Hydraulic

Q3 permanent flow 2.5 m³/h
Q1 minimum flow 0.015625 m³/h
Maximum working pressure 16 bar
Pressure loss class ΔP63
Q2 transitional flow 0.025 m³/h
Q4 overload flow 3.125 m³/h
Flow profile sensitivity class U0 D0

Materials

Body material Brass

Environmental

Temperature class T30 and T50

Approvals

Standards ISO 4064, OIML R49

Dimensions and installation

Length 165 mm Height 100 mm
Schematic, not to scale
Connection thread G3/4" B
Length 165 mm
Weight 0.82 kg
Orientation limitation Horizontal
Height 100 mm
Width 81 mm

Parts

Parts of a multi-jet meter

How a meter of this type is built, and what this model is made of.

Parts of a multi-jet meter, drawn illustration Exploded illustration of a multi-jet water meter's parts, numbered top to bottom: 1 lid, 2 register, 3 register ring/seal, 4 measuring chamber insert with its jets, 5 impeller, 6 strainer, 7 body, 8 tailpieces/connections. 1 2 3 4 5 6 7 8
Illustrative: how a meter of this type is built. This model's own materials and figures are in the table and its specifications.

  1. Lid

    Caps the register and keeps water and debris off the dial.

  2. Register

    Totalises and displays the water passed.

    Register type Multi jet, dry dial, vacuum sealed

  3. Register ring / seal

    Seals the register housing against water ingress.

  4. Measuring chamber insert (with jets)

    Directs several jets onto the impeller from multiple sides for balanced, even wear.

  5. Impeller

    Turns with the combined jets and drives the register.

  6. Strainer

    Screens out grit and debris before the measuring element.

  7. Body

    Houses the measuring element and carries the flow.

    Body material Brass

  8. Tailpieces / connections

    Threaded couplings that join the meter to the pipework.

    Connection thread G3/4" B

Download centre

Everything you need to specify.

Documents for the R160 Multi Jet Dry Dial Water Meter.

Approvals and certificates

More from Water meters

View all Water meters

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