If you mean the USK booster water pump, particularly the common USK QB-60 0.5 HP model, here is a clear description:
USK Booster Pump Description
The USK QB-60 is a compact electric surface/booster water pump designed to increase water pressure and transfer clean water for homes, small farms, apartments, and light commercial applications. It is suitable for boosting water from storage tanks, supplying taps and showers, filling tanks, and small-scale irrigation. �
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Main specifications
Motor: 0.5 HP / 370 W
Voltage: 230 V, 50 Hz
Maximum flow: approximately 27 litres/minute
Maximum head: approximately 28 metres
Maximum suction: approximately 8 metres
Inlet/outlet: 1" × 1"
Motor speed: 2,850 RPM