Tsurumi B series channel impeller-style submersible sewage pumps

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The Tsurumi B series channel impeller-style submersible sewage pumps, suitable for heavy-duty sewage and wastewater handling applications, are available from 50 to 800 mm discharge bores and with flows of up to 150,000 L/min. The largest pump in the range is driven by a 110 kW motor.

It features a double mechanical seal with two seal faces containing silicon carbide that operates within an oil chamber. Its oil lifter forcibly supplies lubricating oil to the mechanical seal and continues to supply oil to the upper seal faces, even if lubricant falls below the rated volume.

The dry-type squirrel cage induction motors are housed in a water-tight casing, conforming to insulation classes B, E or F, and all standard pumps can be used up to 40°C.

The motors are fitted with a circle thermal protector (CTP) in the smaller range of pumps that directly cuts the motor circuit if there is an excessive heat build-up or an overcurrent. For pumps 11 kW and over, a miniature thermal protector (MTP) is embedded in each winding.

Pumps 22 kW and over have a stainless steel electrode-type leaking sensor that senses water incursion into the oil chamber and brings the pump to a halt.

The ‘anti wicking’ block design at the cable entry section of the pump prevents wicking along the strand of the conductor. The open channel impeller has a wide passage that extends from the inlet to the exit of the impeller.

Connection options including standard screwed or flanged elbows and guide-rail kits as well as a ‘dry well’.