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Construction of Naples Metro, Italy

The Project:


Extension of metro line 1 from Piazza Dante to Centro Direzionale: 5.3 km with 5 new stations


Executing companies:

Boviar srl

Dragflow srl


The problem:


The construction sites lie at a depth of 35m below the city centre. High pump pressure is required for drainage.


The solution:


Multiple Tsurumi type LH422 pumps, 22kW each, to expel water from the construction shafts.

In the event of abrasive and corrosive utilization, stronger wear and tear will take place naturally in certain components. With regards to the above application wear and tear can take place mainly in impeller, agitator, suction plate, shaft sleeve, oil ring, mechanical seal, pump casing, strainer, motor casing and discharge coupling. Depending on the working conditions the lifetime of those parts might vary significantly and can be shorter than the legal warranty period.
In this regard, please pay attention to our general terms and conditions that we also send to you by mail on request.