Model: Tsurumi SFQ stainless steel pump
The introduction of recycled water at the Smithfield, Sydney Marubeni power station is bringing the company cost savings. The recycled water is used to cool and humidify intake air to the gas turbines.
The downside of using recycled water is an expected increase in plant corrosion levels. As part of an upgrade program, Marubeni Power Development Australia replaced conventional cast iron submersible pump equipment with Tsurumi stainless steel electro-submersibles.
Cast 316 stainless steel “SFQ” series pumps, supplied by Australian Pump Industries, are specifically designed for corrosive water applications. They are used around the world in similar industrial and even marine applications.
The SFQ series is unique in that even the stator housings are cast and machined 316 stainless steel. Casings, impellers and suction covers are also cast 316 stainless steel. The grade of stainless steel used has a higher content of carbon for strength. It also has a high proportion of nickel and molybdenium for improved corrosion resistance. No welds are required which means no pitting and reduced oxidisation. This material is also capable of withstanding abrasive liquids.
“Our experience has been that Tsurumi pumps provide trouble-free reliable operation” said mechanical maintenance engineer, Shane Lewis. “Cast 316 stainless steel pumps resist corrosion and will require less maintenance” he said.
The SFQ range includes 2” and 3” ports with heads to 44 metres and flows to 2,000 lpm. They feature a high capacity semi open style impeller that will perform in even the toughest conditions.
Tsurumi incorporate a number of features that enhance the life expectancy of the pump and cut maintenance costs. These include a unique anti-wicking cable gland. Water is prevented from wicking down inside the cable. The motor is protected even if the cable is damaged or the end accidentally immersed.
All Tsurumi pumps have a double silicon carbide mechanical seal. Both seal surfaces are submerged in an oil chamber, well away from the pumped liquid. A patented oil lifter ensures the mechanical seal faces are always 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. Like all Tsurumi pumps, they are backed by a three year warranty against faulty material or workmanship.
Further information on the Tsurumi SFQ range is available on our Corrosion Resistant Pumps page or download our SFQ Series cast stainless steel pumps spec sheet PDF (561kb).