300 m³/h High Flow 100 m Head 140 kW Motor Deep Well Submersible Pump for Seawater Applications

The 300QJ300-100/4-140KW Stainless Steel Deep Well Submersible Pump is a high-flow, high-head submersible water pump designed for large-capacity groundwater extraction and deep well water supply applications.

With a rated flow of approximately 300 m³/h, a rated head of approximately 100 meters, and a 140 kW submersible motor, this pump is suitable for large agricultural irrigation systems, industrial water supply, mining projects, municipal water supply and large-scale water resource projects.

The 300QJ series uses a multistage centrifugal pump structure. Multiple impellers generate pressure progressively to provide the required head for deep well water lifting. The pump is installed vertically inside the well and can continuously transfer groundwater to surface pipelines, storage tanks or water distribution systems.

Stainless steel construction can provide improved corrosion resistance for selected water-quality conditions. SS304, SS316 and other material configurations can be considered according to the application.

The 300QJ300-100/4-140KW is designed for applications requiring approximately 300 m³/h of water flow. Typical applications include:

• Large-scale agricultural irrigation
• Centralized farm water supply
• Industrial water supply
• Industrial cooling water
• Mining water supply
• Municipal water projects
• Deep well groundwater extraction
• Large water resource projects

The high-flow design makes this model suitable for projects requiring continuous and large-volume groundwater extraction.

The pump provides a rated head of approximately 100 meters, making it suitable for medium- to high-head deep well water supply applications. However, pump head should not be selected simply based on well depth.

The required total dynamic head normally includes: Total Head = Static Head + Dynamic Water Level Effect + Pipeline Friction Loss + Local Losses + Required Outlet Pressure

For this reason, well depth alone is not enough to select a deep well submersible pump.

The pump is equipped with a 140 kW submersible motor for large-scale water supply systems and continuous-duty applications. Motor configuration can be selected according to the customer's project requirements, including:

• Voltage
• Frequency
• Phase
• Starting Method
• Cable Length
• Motor Protection
• VFD Operation

Soft starters or variable frequency drives can be considered for large pump systems depending on the operating requirements.

Stainless steel construction can improve corrosion resistance in selected water environments. Available material options may include:

• SS304
• SS316
• Other corrosion-resistant materials

For water containing high levels of salt, chloride or other corrosive substances, a water analysis report is recommended before final material selection.

The 300 m³/h high-flow capacity makes this deep well pump suitable for large agricultural irrigation systems, including sprinkler irrigation, drip irrigation and centralized farm water supply.

The pump can be used for:

• Factory process water
• Industrial raw water
• Cooling water systems
• Circulating water replenishment
• Industrial water treatment supply

The pump can be used for groundwater extraction, mine water supply and selected drainage applications. If the water contains significant amounts of sand or solid particles, a suitable wear-resistant pump design should be considered.

The 300QJ series can be used for large deep well water extraction, groundwater lifting and centralized municipal water supply systems.

The pump is suitable for large-scale groundwater extraction, water resource transfer and long-distance water transportation projects.

Before purchasing a deep well submersible pump, customers should provide the following information:

For example: 300 m³/h

For example: 100 m

The actual inside diameter of the well should be confirmed to ensure sufficient installation clearance.

Provide the total well depth.

Dynamic water level is one of the most important parameters for deep well pump selection.

Please indicate whether the water contains:

• Sand
• Salt
• Chloride
• Corrosive chemicals
• Suspended solids

Water quality directly affects the selection of pump and wetted-part materials.

Please provide:

• Voltage
• Frequency
• Phase

For example: 380V / 50Hz / 3 Phase

Before installing a 300QJ deep well submersible pump, confirm the following:

• Actual well inside diameter
• Pump assembly outside diameter
• Well depth
• Static water level
• Dynamic water level
• Discharge pipe size
• Cable length
• Motor cooling conditions

The pump should be lowered into the well carefully to prevent serious contact between the pump assembly and the well casing.

For a large 140 kW submersible pump, appropriate electrical protection should be installed, including overload, phase-loss and short-circuit protection.