2019 DN200-DN600 Niehues Hydraulic Test bench system

2019 DN200-DN600

Hydraulic function test bench DN200-DN600 (built in 2019) shown below. The system is currently in use and is in perfect condition.

Service description

 TP Pump (1)

E-Motor: 315 kW

Pump max. liter capacity: 41,833 l/min

Pump min. liter capacity: 13,944 l/min

Max. operating pressure 25 bar

Nominal discharge head 28 meters

NKG Pump (2)

E-Motor: 315 kW

Pump max. liter capacity: 16,833 l/min

Pump min. liter capacity: 5,611 l/min

Max. operating pressure 16 bar

Nominal discharge head 80.7 meters

Container

Volume: 11400 liters

Permissible pressure: - 0.5/10 bar

Min pressure during operation: 1 bar

Max. operating pressure: 5.5 bar

Medium: Drinking water without additives

Min. max. temperature -10/50°C

Permissible load cycle 1000

The pumps are operated by means of a frequency converter. This enables speed control from 500 to 1500 rpm. The pumps can be switched using a key switch.

The possible speed depends on the NPSH value. The NPSH value depends on the pre-pressure of the container and the back pressure of the system. The back pressure of the system is significantly influenced by the test object and its settings.

Adjustments are made by adjusting the pressure on the container. 

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