Overview

The MD750A is a robust submersible drainage pump designed for construction sites, industrial drainage and water transfer applications requiring greater pumping height.

It features a corrosion-resistant stainless steel body, double mechanical seal in an oil chamber and an agitator to help reduce blockages when pumping water containing suspended sediment.

Suitable for clean water, dirty water and saltwater applications within its operating limits, the MD750A is a practical choice for demanding drainage and dewatering jobs.

Key features

• Stainless steel body for corrosion resistance
• Double mechanical seal in an oil chamber
• Built-in agitator to help reduce blockages
• Suitable for clean water and saltwater applications
• 50mm (2") discharge outlet
• External float switch for automatic operation
• Impact-resistant PVC strainer base
• Continuous-duty motor
• Thermal overload protection
• IP68 protection rating
• Quality carry handle

Performance

The MD750A is designed for drainage and transfer applications where a higher delivery head is required.

Pump performance

• Maximum flow: Approximately 300 L/min
• Maximum head: Approximately 15m
• Motor power: 0.7kW / 1.0HP
• Maximum particle size: 8mm
• Maximum immersion depth: 6m
• Maximum liquid temperature: 40°C

Approximate performance at different flow rates

• 100 L/min — 11.5m head
• 150 L/min — 9m head
• 200 L/min — 6.3m head
• 250 L/min — 3.2m head

Performance figures are approximate readings from the manufacturer's pump curve.

Maximum flow and maximum head occur at different operating points. Actual performance depends on the vertical lift, discharge pipework and friction losses.

The built-in agitator helps reduce sediment accumulation and blockages, but the pump must still be operated within its rated 8mm solids-handling capacity.

Specifications

• Model: MD750A 
• Pump type: Submersible drainage pump
• Motor power: 0.7kW / 1.0HP
• Voltage: 220–240V
• Phase: Single-phase
• Maximum flow: Approximately 300 L/min
• Maximum head: Approximately 15m
• Outlet: 50mm (2")
• Maximum particle size: 8mm
• Maximum immersion depth: 6m
• Liquid temperature: 0–40°C
• Float switch: External, automatic
• Duty rating: Continuous
• Motor protection: Thermal overload
• Protection rating: IP68

Construction

The MD750A features corrosion-resistant construction designed for demanding drainage applications.

• Body: Stainless steel
• Mechanical seal: Double mechanical seal in an oil chamber
• Strainer base: Impact-resistant PVC
• Agitator: Integrated to help reduce blockages
• Carry handle: Heavy-duty design
• Motor: Continuous duty with thermal overload protection
• Protection rating: IP68

The double mechanical seal provides additional protection against water entering the motor assembly, while the agitator helps manage suspended sediment during pumping.

FAQs

Is this pump suitable for construction sites?

Yes. The MD750A is designed for construction-site dewatering and industrial drainage, including suitable water containing suspended sediment.

Can it pump saltwater?

Yes. The supplier identifies clean water and saltwater as suitable applications. Rinse and maintain the pump according to the manufacturer's recommendations after saltwater use.

What does the agitator do?

The agitator helps disturb sediment around the pump inlet, reducing the likelihood of blockages during drainage. It does not increase the pump's maximum 8mm solids-handling capacity.

Does the pump operate automatically?

Yes. The external float switch provides automatic start and stop operation as the water level changes, provided the float has sufficient room to move freely.

What is the maximum pumping height?

The maximum head is approximately 15m at little or no flow. For example, at 150 L/min the pump produces approximately 9m head, based on the supplied performance curve.

Can it be used for continuous operation?

The motor is rated for continuous duty, provided the pump is operated within its specified limits and has adequate water for cooling.

Are spare parts available?

Contact us for spare parts availability and pricing.