Davey D40M Cast Iron Manual Submersible Pump for Industrial Drainage with Open Impeller

Precise control over industrial drainage pathways is a primary benefit of the Davey D40M, which is configured for manual operation in high-demand fluid environments. Site operators can integrate this powerful unit with external level switches or manual override systems to manage water transfer in commercial pits, ditches, and factory sumps. The design effectively handles neutral pH grey water in heavy-service duty cycles where high-volume removal is a critical operational requirement for facility maintenance. Its robust build ensures stable performance when submerged in challenging industrial fluid environments.

Equipped with a high-performance 0.4 kW motor, the unit generates significant hydraulic force for large-scale dewatering tasks. It delivers a maximum flow rate of approximately 240 L/Min and reaches a maximum total head of approximately 11.5 metres to support high-elevation discharge. The motor operates on a 240v supply with a stable run current of 3.7 Amps, ensuring efficient energy use during prolonged discharge cycles. This performance profile is engineered to provide the necessary torque for consistent hydraulic behavior in deep sub-surface pits and commercial drainage sites.

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 debris is present.

Mechanical security is reinforced by a heavy-duty cast iron pump body and motor top paired with a 304 stainless steel motor shell for lasting structural integrity. Motor longevity is ensured by a double mechanical shaft seal in an oil bath, utilizing premium silicon carbide and ceramic materials to provide an excellent barrier against abrasives. Security is further enhanced by an automatic resetting thermal overload and a sand slinger lip seal which together prevent internal failure from electrical or thermal stress. The assembly includes a 10-metre HO7RNF oil-resistant power lead for secure termination.

FEATURES

• Powerful 0.4 kW motor provides high-capacity drainage for industrial and commercial pit service.
• Double mechanical shaft seal in an oil bath ensures long term motor protection in deep sumps.
• Hard faced silicon carbide and ceramic seal faces provide excellent resistance to abrasive wear.
• Cast iron impeller and pump body offer maximum durability in harsh, neutral pH environments.
• Manual operation configuration allows for seamless integration with external industrial control systems.
• Sand slinger lip seal provides added protection for the mechanical seal and motor assembly.
• 10 metre HO7RNF oil resistant power lead is designed for longevity in contaminated water.
• Internal thermal overload protection prevents motor failure from excessive electrical or thermal load.