Davey D25A Cast Iron Automatic Submersible Pump for Pit Dewatering with Open Impeller

Featuring a rugged cast iron pump body and motor top, the Davey D25A provides superior structural durability for site use in demanding commercial pits and ditches. This architectural casting design allows the assembly to withstand the rigours of continuous service in neutral pH environments where reliable water removal is a critical operational requirement. By addressing the load challenges of pumping grey water containing minor impurities, the unit provides a heavy-duty solution for commercial facility management. The construction ensures that sub-surface structures remain protected through consistent and reliable fluid transfer.

Hydraulic capacity is driven by a 0.25 kW single-phase motor that provides the torque necessary for efficient vertical lift from deep pits. The unit generates a maximum flow of approximately 200 L/Min and achieves a maximum total head of 9.5 metres, making it suitable for medium-scale dewatering projects. With a rated run current of 2.2 Amps on a 240v supply, the motor is configured for energy-efficient performance while maintaining high volumetric throughput. This performance profile ensures rapid evacuation of water from flooded garages and commercial sites during heavy rainfall events.

The internal hydraulic system utilizes a cast iron open impeller designed for superior solids handling and circulation stability. This centrifugal arrangement is specifically configured to manage fluids containing up to one percent fine solids, making it less susceptible to blockages compared to closed designs. By facilitating clear fluid velocity paths, the impeller design reduces internal wear and maintains high hydraulic balance even when water quality varies. This configuration is essential for industrial sumps where environmental debris or fine grit may be present in the liquid stream.

Operational longevity is anchored by a double mechanical shaft seal housed in an oil bath, featuring a hard-faced silicon carbide and ceramic seal on the pump side for maximum wear resistance. The motor is further protected by a sand slinger lip seal and an internal automatic resetting thermal overload to prevent burnout from electrical stress. For secure and safe electrical termination, the pump includes a 10-metre HO7RNF oil-resistant lead and a standard power plug. The assembly is completed with 304 stainless steel fasteners to ensure lasting integrity in submerged conditions.

FEATURES

• 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.
• Integrated float switch provides automatic start and stop functionality based on rising water levels.
• Sand slinger lip seal adds an extra layer of protection against abrasive ingress to the seal chamber.
• HO7RNF 10 metre oil resistant lead ensures safe electrical connection in dirty water environments.
• Cast iron open impeller design allows for reliable handling of fine solids without clogging the pump.
• High starting torque motor configuration supports reliable performance under challenging fluid loads.