state enterprise
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NOVATOR
ЛК-20Х, ЛК-20Г
Impeller
Water Meters

The ЛК impeller water meters are designed to measure the volume of potable water or hot water in the systems of hot water supply which flows through them at a maximal pressure of 1 МPa and for temperatures from 5 °С to 30 °С and from 30 °С to 90 °С with a rotating counting mechanism for convenient reading in any position.

The meters are equipped with the counting mechanism which has a magnetic link with the impeller device. Impeller suspension: ПАС agate jewels or ПКС corundum ones.

The materials of the parts contacting the running water are made of polypropylene 01020-16, do not deteriorate the water quality and are proof against its action. Body: ЛЦ40С brass. The service life: 12 years. The guarantee is 18 months from the date of putting into service.

The ЛК-20 water meters are proof against the influence of a magnetic field with an intensity of 50–100 mТ in conformity with the conditions of ДСТУ 3580-97.

TECHNICAL DATA:
Diameter of nominal bore (DN), mm 20
Class and operating position BN/AV
Water temperature, °С
– hot water 30-90
– cold water 5-30
Water flow rates, m3/hour:
- minimal (Qmin)
- transient (Qt)
- nominal (Qn)
- maximal (Qmax)

0.05/0.1
0.2/0.25
2.5
5.0
Gear ratio (К), m3/pulse 8.829х10-6
Counting mechanism capacity, m3 99999
Least division value of counting mechanism, m3 0.0001
Limit of admissible relative error, %, within flow rates C    H
– from Qmin (inclusive) to Qt ±5   ±5
– from Qt (inclusive) to Qmax ±2   ±3
Sensitivity threshold, m3/hour, maximum 0.025/0.05
Pressure loss at Qmax, МPа, maximum 0.1
Impeller suspension: ПАС agate jewels or ПКС corundum ones, pcs. 2
Overall dimensions, maximum:  
– length (without reducer), mm 130
– length with mounting pipe connections, mm 230
– width, mm 80
– height, mm 95
Nominal diameter of threaded connection G1-В
Mass, kg  
– meter 0.87
– meter with mounting set 1.0