New submersible Tsurumi pumps use high-grade stainless steel to fight corrosion

Australian Pump Industries has introduced new submersible pumps to deal with the challenge highly corrosive environments pose.

Australian construction sites and mines are often faced with the problem of moving contaminated and corrosive water, with which cast iron submersible pumps are unable to cope with and often fail prematurely.

The SFQ series by Tsurumi Pump, made from cast 316 stainless steel, is intended to withstand corrosive water applications including seawater, brine, and even leachate in settling ponds.

‘Contaminants can leach into collection ponds during construction when sub-layers are disturbed. Tsurumi Pump realised that cheaper grades of stainless steel don’t last under these corrosive applications,” says Aussie Pumps’ Craig Bridgement.

The grade of stainless steel used has a higher content of carbon for strength and also has a high proportion of nickel and molybdenium for improved resistance against corrosive and abrasive liquids.

The design uses no welds, which Aussie Pumps says means no pitting and reduced oxidisation.

The SFQ range includes 2” and 3” three phase pumps with heads to 44 metres and flows to 2,000 lpm, which feature a high capacity semi open style impeller that will perform in even the toughest conditions.

Tsurumi incorporate a number of features intended to enhance the life expectancy of the pump and cut maintenance costs, including a unique anti-wicking cable gland which prevents water from wicking down inside the cable.

All Tsurumi pumps have a double silicon carbide mechanical seal, with both of tis surfaces submerged in an oil chamber away from the pumped liquid.

A patented oil lifter ensures the mechanical seal faces are lubricated and cooled, even if the pump is installed horizontally.

Tsurumi Pump developed the product range in response to requirements in the Japanese market for super tough pumps for the chemical industry.

All Tsurumi pumps – including the SFQ range – are backed by a three year warranty against faulty material or workmanship.

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