Davey D150GA Cast Iron O-Ring Casing Sealing Submersible Grinder Pump for Black Water with Open Impeller

The Davey D150GA is the premier automatic sewage grinder for large volume water transfer, combining massive 1.5 kW power with integrated float switch control. This model is specifically engineered for the pumping of septic effluent and black water in commercial pits where high head and automatic operation are critical. By shredding textiles and soft solids at the inlet, the assembly protects the hydraulic network from blockages and ensures a consistent flow of macerated slurry. Its heavy-duty construction is designed for long-term immersion in aggressive environments.

Generating a maximum total head of 26.5 metres and a flow rate reaching 220 L/Min, this 240v single-phase unit provides industrial-grade performance for residential and commercial sites. The 1.5 kW motor operates with a 13.0 Amps run current, ensuring the shredding mechanism has the necessary torque to process thick organic waste. The integrated preset length float switch enables fully automatic drainage, activating the pump only when the water level reaches a predetermined point. This ensures efficient sump management with minimal operator intervention.

Hydraulic behavior is centered on an open centrifugal impeller and a high chromium steel grinding ring that maintains high fluid velocity through the casing. This configuration handles liquids containing soft solids in suspension, preventing the accumulation of sediment that could compromise efficiency. The centrifugal flow path minimizes internal friction, extending the life of the rotating assembly during prolonged discharge cycles. The 1 1/2" BSP F outlet port is optimized for the high volumetric throughput of this powerful model.

Mechanical security is reinforced by a double mechanical shaft seal in an oil bath and a corrosive-resistant 304 stainless steel motor shell. The internal thermal overload with automatic reset prevents motor failure from electrical or thermal stress during high-load cycles. For secure installation, the pump is fitted with rubber-cushioned mounting feet and includes a 10-metre HO7RN-F oil-resistant lead. The system is fully repairable and designed for low-maintenance service in demanding waste water and sewage applications.

FEATURES

• Preset length float switch for fully automatic operation and unattended sump management.
• Massive 1.5 kW motor delivers a 26.5m head for high-elevation effluent transfer.
• Heavy-duty shredding and grinding ring at the inlet macerates solids into a free-flowing slurry.
• Open centrifugal impeller design prevents internal clogging and maintains high flow rates.
• Double mechanical shaft seal in an oil bath provides maximum protection for the electrical chamber.
• Heavy-duty powder-coated cast iron body and 304 stainless steel shell for superior longevity.
• HO7RN-F 10 metre oil-resistant power lead provides a durable connection in aggressive waste.