Size DN 15 and 20 Minimum permissible startingflow rate (l/h) 5 and 8 respectively
The meters suitable for working pressures of up to 16 bar.
The main casings of copper alloy containing not less than 63 percent copper i.e. they brass of
good quality.
The registers have a single straight row of easily readable digits indicating the consumption in
m³ with an indicating range of at least 99999 m³. The registers also indicate the consumption
in liters to the nearest litre, either by means of digits of a different colour to the digits that
indicate the consumption in m³ or by means pointers rotating over appropriately calibrated
circular dials.
All meters have integral check valves installed in the outlet ends of the meters.
The following marked on the dial:
Type of meter
Normal or Permanent flowrate (Qn or Q3) in m³/h
Metrological Class or R-Rate
Pressure class
Temperature class
Symbol of manufacturer
Patent approval number
Year of manufacture
LWB
CERTIFICATION: ISO 4422-1:1996, 1183-1:2019, 527-1:2019, EN 13959:2004, BS 6730, BS 21:1985
