Multiquip ST3050D Submersible Centrifugal Pump – Heavy-Duty Water Removal for Professional Use

In construction, utilities, municipal projects, and flood control, reliable water management is a critical part of operations. Whether you’re draining trenches, pumping flooded basements, or managing stormwater, you need a pump that can handle high volumes of water with efficiency and durability. That’s exactly what the Multiquip ST3050D Submersible Centrifugal Pump delivers.

With its powerful motor, cast iron construction, and high flow capacity, this submersible centrifugal pump is engineered for contractors, municipalities, and professionals who demand long-lasting performance in the toughest environments.

What Is the Multiquip ST3050D Submersible Centrifugal Pump?

The Multiquip ST3050D is a 3-inch discharge submersible centrifugal pump designed for heavy-duty water removal. Unlike standard sump pumps, this model can handle larger volumes of water with greater head lift capacity and is rugged enough for job sites where dirt, debris, and sediment are present.

Built for durability, the ST3050D uses a 2-horsepower electric motor and heavy-duty cast iron construction to withstand continuous use in harsh environments. It’s ideal for construction sites, industrial facilities, municipal work, and emergency flood response.

Key Features of the Multiquip ST3050D

The ST3050D Submersible Pump is packed with features designed to maximize reliability and efficiency:

1. High-Powered Motor

• 2-horsepower motor delivers strong pumping performance.

• Runs on 230V, single-phase power.

• Designed for long duty cycles with thermal protection.

2. Large Flow Capacity

• Maximum pumping rate of 476 gallons per minute (GPM).

• Maximum head lift of 72 feet (22 meters).

• Perfect for large-scale dewatering and flood control.

3. Solid Handling

• Capable of handling solids up to 0.4 inches (10 mm).

• Ensures efficiency even in water with light debris or sediment.

4. Durable Construction

• Cast iron pump casing for long life.

• Stainless steel motor housing resists corrosion.

• Double mechanical seals with an oil-filled chamber for added protection.

5. Portable Yet Heavy-Duty

• Weight: ~130 lbs (59 kg).

• Rugged enough for professional use but still portable for job sites.

6. Built-In Safety Features

• Thermal overload protection prevents overheating.

• Waterproof construction allows full submersion.

• Long 32-foot power cord for flexible use.

Technical Specifications of the ST3050D

Here are the official specs for the Multiquip ST3050D Submersible Centrifugal Pump:

• Model: ST3050D

• Pump Type: Submersible centrifugal pump

• Motor Power: 2 HP, electric

• Power Supply: 230V AC, single-phase, 60 Hz

• Weight: ~130 lbs (59 kg)

• Discharge Size: 3 inches (NPT)

• Max Flow Rate: ~476 GPM (1,800 L/min)

• Max Head Lift: ~72 ft (22 m)

• Solid Handling: Up to 0.4 in. (10 mm)

• Cord Length: 32 feet (9.7 m)

• Construction: Cast iron body, stainless steel casing

• Seal System: Double mechanical seals with oil bath

• Applications: Construction dewatering, flood control, utility maintenance, industrial water transfer

Benefits of the Multiquip ST3050D

The ST3050D Submersible Pump is built with professionals in mind, offering several important benefits:

1. High-Volume Pumping

With a flow rate of 476 GPM, it’s one of the most powerful pumps in its class, capable of quickly draining large areas.

2. Durability Under Stress

Cast iron and stainless steel construction mean it can withstand abrasive environments, job site abuse, and continuous use.

3. Handles More Than Just Clean Water

While not a trash pump, the ST3050D can handle light debris and sediment, making it versatile for many job site conditions.

4. Safety Features Protect Investment

Thermal overload protection and a waterproof sealed design ensure long-lasting reliability.

5. Wide Range of Applications

From construction trenches to municipal storm drains, it adapts to professional, residential, and emergency needs.

Applications of the ST3050D Submersible Pump

The Multiquip ST3050D is designed for professional-grade water removal across a wide variety of industries and environments:

• Construction Sites – Dewatering foundations, trenches, and excavation pits.

• Municipal Utility Work – Pumping storm drains, manholes, and sewage bypass projects.

• Industrial Use – Factories, processing plants, and equipment pits.

• Flood Control – Emergency response for flooded streets, basements, and communities.

• Agriculture – Drainage canals, irrigation ponds, and water transfer.

• Residential/Commercial – Large basement floods and property drainage.

Comparison: ST3050D vs. Other Multiquip Pumps

Here’s how the ST3050D stacks up against other Multiquip models:

The ST3050D is clearly designed for high-capacity pumping, making it perfect for large-scale projects that require moving thousands of gallons efficiently.

Maintenance Tips for the ST3050D

To keep your Multiquip ST3050D running efficiently and extend its lifespan, follow these maintenance tips:

1. Inspect Power Cord – Ensure there are no cuts or damage before each use.

2. Flush After Use – Clean with fresh water to remove dirt and sediment.

3. Check Impeller – Look for cracks, chips, or excessive wear.

4. Inspect Mechanical Seals – Replace if any leakage is detected.

5. Avoid Dry Running – Always operate with sufficient water to prevent overheating.

6. Store Properly – Keep dry and off the ground when not in use.

Why Contractors Choose the ST3050D

Contractors, municipalities, and industrial professionals prefer the Multiquip ST3050D Submersible Centrifugal Pump because it:

• Delivers high-volume pumping at 476 GPM.

• Handles solids up to 0.4 inches.

• Offers extreme durability with cast iron and stainless steel build.

• Provides safe operation with built-in overload protection.

• Performs reliably across construction, municipal, and flood response projects.

It strikes the perfect balance between raw power, durability, and versatility, making it one of the top choices in Multiquip’s submersible pump lineup.

Conclusion

The Multiquip ST3050D Submersible Centrifugal Pump is a professional-grade solution for large-scale dewatering and flood management. With its 2 HP motor, 476 GPM flow rate, 72-foot head, and ability to handle solids up to 0.4 inches, it’s built to tackle demanding applications in construction, utilities, industry, and emergency response.

From draining trenches and manholes to emergency flood cleanup and industrial water transfer, the ST3050D delivers the power, durability, and reliability contractors demand. For professionals seeking a long-lasting, high-capacity pump, the Multiquip ST3050D Submersible Centrifugal Pump is a top-tier investment.