Davey D75/SS 316 Stainless Steel Viton-Sealed Submersible Pump for Sump Emptying with Open Impeller

Environmental management in commercial sumps prone to aggressive groundwater ingress requires the superior corrosion resistance of the Davey D75/SS. This premium submersible unit is developed to handle clean or slightly dirty grey water of neutral pH containing up to ten percent soft solids. By utilizing a full 316 stainless steel construction, the assembly remains structurally stable in damp environments where standard cast iron would suffer from chemical degradation. It provides a reliable foundation for sump emptying and septic water disposal in deep sub-surface pits.

Powered by a 0.75 kW single-phase motor, this model delivers consistent hydraulic performance for high-head drainage tasks on a standard 240v supply. It generates a maximum flow rate of approximately 420 L/Min and reaches a maximum total head of 15 metres to satisfy demanding discharge requirements. The electrical configuration maintains a steady 7.5 Amps run current during typical service cycles, ensuring efficient operation at a synchronous speed of 2850rpm. This performance profile ensures that water transfer is managed rapidly through the 50mm outlet port.

Hydraulic behavior is centered on an open centrifugal impeller configuration engineered from 316 stainless steel to handle liquids containing soft solids without internal clogging. This specific design maintains high fluid velocity paths through the pump casing, preventing the accumulation of sediment that could compromise volumetric efficiency over long-term service. By utilizing a centrifugal flow path, the unit minimizes internal friction and vibration, extending the functional life of the rotating assembly during prolonged operation. The impeller is optimized for liquids containing environmental debris typically found in domestic sumps.

Mechanical security is reinforced by a 316 stainless steel pump body and motor shell paired with Viton elastomers for enhanced chemical compatibility in grey water. 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. An internal automatic resetting thermal overload prevents burnout during high-load operating conditions, while the 10-metre HO7RNF oil-resistant lead ensures a safe power connection. The architectural casting includes an integrated 316 stainless steel handle for lasting structural integrity.

Features

• Open centrifugal impeller design allows for the efficient passage of small soft solids in suspension without internal clogging.
• Complete 316 stainless steel pump body and motor shell provide superior corrosion resistance in aggressive water environments.
• Double mechanical shaft seal in an oil bath with silicon carbide and ceramic faces offers enhanced motor insulation.
• Viton elastomers and O-rings ensure high chemical compatibility and lasting sealing performance during prolonged immersion.
• Automatic resetting thermal overload prevents motor damage from electrical or thermal stress during high-load operation.
• HO7RNF oil resistant 10 metre power lead includes a 3-pin plug for rapid and safe deployment in contaminated water.
• Integrated 316 stainless steel mounting base ensures firm and stable positioning on the pit floor during drainage.