Sea water contains many kinds of chloride and high electric conduction which causes chemical corrosion, electro-chemical corrosion, corrosion and erosion caused by velocity and bacterial corrosion, etc., giving a damage to the pump.

Kawamoto sea water pump "KAWA-HOPE" series are designed to withstand against these corrosive factors adopting anti-corrosive materials such as titanium, high chlome stainless steel, and engineering plastics, putting special treatment such as nylon coating and epoxy resin, and installing sacrificial anode depend on the pump type and construction.