Davey DT37 Cast Iron Heavy Duty Submersible Drainage Pump for Industrial Sump Emptying with Open Impeller

Internal fluid velocity paths in the Davey DT37 are engineered for maximum volumetric throughput, achieving an impressive flow rate of approximately 1200 L/Min. This high-capacity model uses a 3.7 kW / 415v motor to reach a maximum head of approximately 23 metres, providing the pressure required for demanding industrial dewatering tasks. The hydraulic configuration utilizes a cast iron open impeller designed for circulation stability in deep pits where large volumes of water must be moved rapidly. This design minimizes internal friction, which reduces heat buildup and ensures the unit operates efficiently during prolonged discharge cycles.

Powered by a three-phase motor, the assembly maintains a 7.5 Amps run current to handle the mechanical loads associated with high-elevation discharge from large ditches. The electrical system is configured for 415v industrial supplies, ensuring superior torque and hydraulic performance compared to single-phase units. Every component is protected by a 10-metre HO7RNF oil-resistant lead, allowing for safe power termination in contaminated industrial waste environments. This performance profile is essential for facility managers who require a dependable solution for large-scale sump management in commercial site construction.

The hydraulic heart of the pump is optimized for the passage of suspended soft solids through a 100mm discharge port, reducing the risk of internal blockages. This centrifugal arrangement facilitates steady water removal even when water quality varies, ensuring that site drainage remains functional during heavy rainfall events. By maintaining high velocity through the pump casing, the design prevents sediment accumulation that could compromise volumetric efficiency over long-term service. The cast iron impeller provides the structural durability needed to handle environmental debris typically found in factory sumps and commercial ditches.

Mechanical security is reinforced by a heavy-duty cast iron pump body and motor top paired with a corrosive-resistant 304 stainless steel motor shell. Longevity is anchored by a double mechanical shaft seal in an oil bath featuring silicon carbide and ceramic faces for maximum wear resistance against abrasives. For operational security, the unit includes an automatic resetting thermal overload and a sand slinger lip seal to prevent moisture ingress into the electrical chamber. The assembly is completed with high-grade 304 stainless steel fasteners and an integrated lifting handle for reliable industrial deployment.

Features

• Industrial 3.7 kW motor provides massive hydraulic force for large volume water transfer.
• 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.
• High volume flow rate of 1200 L/Min ensures rapid dewatering of large factory ditches.
• 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.