Davey DT22 Cast Iron High Capacity Submersible Drainage Pump for Septic Water Disposal with Open Impeller

Heavy cast iron housing and motor top construction provide the structural foundation for the Davey DT22, ensuring it can withstand the rigors of high-capacity site dewatering. This 2.2 kW / 415v motor delivers a maximum flow of approximately 1100 L/Min, making it suitable for large-volume water transfer in commercial and industrial settings. The architectural casting design provides a stable base on the pit floor, while the 304 stainless steel motor shell and fasteners resist corrosion in neutral pH grey water. These material choices are critical for extending the service life of the pump in harsh submerged environments.

Performance is anchored by the three-phase electrical configuration, which maintains a 4.5 Amps run current to provide exceptional starting torque for high-head drainage tasks. It achieves a maximum total head of 20 metres, satisfying the discharge requirements for deep industrial sumps and site ditches. The 80mm outlet port facilitates the rapid evacuation of water, ensuring that commercial cellars and factory pits remain protected from inundation. This high-capacity model is engineered for energy-efficient operation, providing a low-carbon solution for large-scale facility management during flood protection cycles.

Hydraulic efficiency is centered on a cast iron open impeller that facilitates the passage of soft solids in suspension without compromising flow velocity. This centrifugal design is engineered to resist blockages, allowing the pump to manage liquids containing up to ten percent soft solids while maintaining high volumetric throughput. By maintaining hydraulic balance, the unit reduces internal vibration and wear, which significantly extends the functional life of the rotating assembly in harsh industrial settings. The open impeller configuration ensures that site drainage remains uninterrupted even when significant environmental debris is present in the liquid.

Mechanical security is reinforced by a double mechanical shaft seal in an oil bath, utilizing premium silicon carbide and ceramic materials for the primary seal faces. For operational security, the unit includes an automatic resetting thermal overload and a sand slinger lip seal to prevent internal failure from electrical or thermal stress. The assembly includes a 10-metre HO7RNF oil-resistant power lead with bare wire ends for professional industrial termination in three-phase control panels. The integrated lifting handle and stainless steel fasteners ensure that the unit remains serviceable and structurally sound during long-term immersion.

Features

• High capacity 1100 L/Min flow rate ensures rapid removal of water from large industrial pits.
• Three phase 2.2 kW motor provides superior torque and stable hydraulic behavior for site use.
• Double mechanical shaft seal in an oil bath offers enhanced motor protection and long service life.
• Silicon carbide and ceramic seal faces provide high resistance to wear from suspended particles.
• Heavy duty cast iron pump body and motor top provide superior structural durability for site use.
• Open centrifugal impeller design allows for the passage of soft solids without clogging the pump.
• 10 metre HO7RNF oil resistant power lead is designed for longevity in contaminated water.