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Comparison Metabo HWWI 4500/25 Inox vs Metabo HWW 4500/25 Inox Plus

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Metabo HWWI 4500/25 Inox
Metabo HWW 4500/25 Inox Plus
Metabo HWWI 4500/25 InoxMetabo HWW 4500/25 Inox Plus
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Suitable forclean waterclean water
Specs
Maximum performance
4500 L/h /maximum/
4500 L/h
Maximum head
48 m /maximum/
48 m
Max. pressure4.8 bar4.8 bar
Pump typecentrifugalcentrifugal
Suction height8 m8 m
Maximum liquid temperature35 °С35 °С
Volume of water pressure tank24 L24 L
Suction systemsingle-stagesingle-stage
Outlet size1"1"
Inlet hole size1"1"
Engine
Maximum power1300 W1300 W
Power sourceelectricelectric
Mains voltage230 V230 V
Power cord length1.5 m1.5 m
General specs
Noise level82 dB82 dB
Country of originGermanyGermany
Pump housing material
stainless steel /plastic/
stainless steel
Impeller / auger materialstainless steelstainless steel
Water pressure tank materialsteelstainless steel
Weight17.8 kg16.2 kg
Added to E-Catalogdecember 2014december 2014

Water pressure tank material

The material of the water pressure tank provided in the design of the pumping station.

Recall that the classic (not sewer) pumping station is a surface pump, supplemented by a water pressure tank. Such a tank is a reservoir where water accumulates. It performs two functions: it smooths out pressure drops in the system and stores some water in case the pump is turned off. For the main body in such containers, the following materials can be used:

— Cast iron. The simplest and most inexpensive option: cast iron is somewhat inferior to stainless steel in terms of strength and corrosion resistance. However, for those models in which it is used, these moments do not have a noticeable meaning.

— Stainless steel. The most advanced material in use: stainless steel combines high strength and corrosion resistance. However, such tanks are somewhat more expensive than other varieties.

— Steel. Non-stainless steel accumulators usually use special coatings to protect against corrosion. This material is superior to cast iron in strength and is somewhat cheaper than stainless steel.

— Aluminium. The main advantage of aluminium alloys is their light weight combined with quite decent strength and rust resistance. Of the shortcomings, a rather high price can be noted.
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