Davey DT22G Cast Iron Class F Insulation Submersible Grinder Pump for Grey Water with Open Impeller

Addressing the high-volume requirements of commercial dewatering and sewage disposal, the Davey DT22G utilizes a massive 2.2 kW three-phase motor to move slurry rapidly. This 415v grinder pump is engineered for large industrial pits where massive volumes of grey and black water must be shredded and moved through high-elevation networks. By incorporating a heavy-duty grinding ring at the inlet, the assembly prevents blockages in small discharge piping systems typically used in pressure sewer mains. Its robust cast iron construction ensures it remains stable during high-velocity pumping cycles.

Powered by a 2.2 kW motor, this three-phase model delivers an exceptional maximum flow of 350 L/Min and achieves a maximum total head of 24 metres. It operates with a 4.5 Amps full load current, providing the high starting torque required to process thick textiles and organic solids in industrial settings. This performance profile is designed to maintain hydraulic pressure across large site drainage areas, evacuating water through the 2" BSP F outlet port. The three-phase configuration ensures consistent energy efficiency during prolonged service duty.

The hydraulic system utilizes a heavy-duty cast iron open impeller and a high chromium steel shredding mechanism that handles up to 20% soft solids in suspension. This configuration prevents the accumulation of sediment in the pump casing, maintaining high volumetric throughput even in harsh environments. The centrifugal flow path minimizes internal friction and wear, protecting the rotating assembly from the abrasive effects of commercial waste water. This ensures that the macerated slurry remains free-flowing throughout the entire discharge network.

Mechanical stability is achieved through a powder-coated cast iron body and a 304 stainless steel motor shell with Viton or nitrile elastomers. Longevity is anchored by a double mechanical shaft seal in an oil bath featuring hard-faced silicon carbide and ceramic surfaces for maximum wear resistance. For professional installation, the unit includes a 10-metre HO7RN-F oil-resistant lead and seal sensor leads for connection to industrial protection relays. The architectural casting includes a heavy-duty handle and stable mounting feet for secure positioning.

FEATURES

• Massive 2.2 kW three-phase motor provides 350 L/Min flow for high-volume water transfer.
• Heavy-duty high chromium steel shredder and grinding ring macerates tough textiles and solids.
• Double mechanical shaft seal in an oil bath provides professional-grade protection for the motor.
• Open centrifugal impeller design prevents internal clogging and supports high volumetric throughput.
• Heavy-duty powder-coated cast iron pump parts ensure maximum longevity in aggressive waste.
• Integrated seal sensor leads allow for early detection of seal failure through protection relays.
• HO7RN-F 10 metre oil-resistant power lead with bare wire ends for professional three-phase connection.