Tsurumi 32MG21.5 Cast Iron High-Head Submersible Grinder Pump for Pressurized Sewerage with Vortex Impeller

This cast iron submersible grinder pump is designed for transferring raw sewage; community waste; and domestic effluent under pressure. The integrated grinding mechanism cuts incoming solids into small pieces; enabling transfer via smaller diameter pipe networks to prevent clogging. It is suitable for domestic effluent pumping; campsite drainage; and pressurized sewerage installations.

Operating on a three-phase electricity supply at 415 V; this unit features a 1.5 kW motor drawing a rated current of 3.9 Amps. Visually evaluated from the manufacturer's performance curve; the pump achieves a maximum total head of approximately 24.5 m and a maximum flow rate of approximately 144 L/Min. The motor utilizes a direct on line starting method and runs at a speed of 3000 min-1.

The mechanical construction includes a vortex impeller dynamically balanced for high-gap structures. It is fitted with a double-face mechanical seal in an oil chamber; featuring ceramic and carbon upper faces with silicon carbide lower faces. A built-in oil lifter ensures continuous lubrication of the shaft seals even when the oil level drops below standard volume.

Safe operation is supported by a circle thermal protector built into the motor housing which directly interrupts the motor circuit during overcurrent or excessive heat accumulation. The power connection consists of a 6-meter PVC cabtyre cable with an anti-wicking block. For simplified inspection and maintenance; this model can be used with the optional guide rail fitting set; model number TOS32MG21.5.

FEATURES

• Built-in high-chromium cast iron grinder mechanism with stationary and rotational cutting blades to crush solids.
• Watertight cable entry section with an anti-wicking molded rubber block that prevents capillary water incursion.
• Permanently lubricated; deep-groove; double-shielded C3 ball bearings to absorb radial and axial thrust forces.
• Corrosion-resistant 420 stainless steel motor shaft paired with a gray cast iron pump casing for structural strength.
• Secondary dust lip seal operating in tandem with double mechanical seals to shield against abrasive grit.
• Continuous-duty rated dry subsea induction motor incorporating Class F insulation and IP68 watertight protection.
• Standard screwed oval flange discharge connection with a 32 mm bore size suitable for high-head sewerage runs.