250QJH167-40-30kW Stainless Steel Deep Well Submersible Pump

High-Flow Borehole Pump for Industrial Water Supply, Irrigation and Groundwater Extraction

The 250QJH167-40-30kW stainless steel deep well pump is a vertical submersible pumping unit designed for groundwater extraction, agricultural irrigation, industrial water supply and other high-flow water-transfer applications.

The pump and submersible motor are directly coupled and operate fully submerged. This compact arrangement requires limited surface space and avoids the suction-lift restrictions associated with conventional surface-mounted centrifugal pumps.

With a nominal flow rate of approximately 167m³/h, a nominal head of approximately 40m and a 30kW motor, this model is suitable for projects requiring reliable, continuous and high-volume water delivery. Stainless steel wetted components can be supplied in 304, 316 or 316L, subject to the water analysis and operating conditions.

Main Technical Specifications

Specifications may vary between manufacturers. The number of stages, overall diameter, outlet size, cable length, motor construction and installation dimensions must be confirmed before placing an order.

Model Designation

250QJH167-40-30kW

• 250: normally indicates the nominal well-diameter class;

• QJH: commonly identifies a stainless steel deep well submersible pump series;

• 167: nominal design flow of approximately 167m³/h;

• 40: nominal design head of approximately 40m;

• 30kW: rated motor power.

Key Product Features

High-Flow Water Delivery

With a nominal capacity of approximately 167m³/h, the pump is suitable for centralized irrigation, raw-water intake, industrial water transfer and large storage-tank filling.

Corrosion-Resistant Stainless Steel Construction

Wetted components can be manufactured from 304, 316 or 316L stainless steel. The appropriate grade should be selected according to chloride concentration, pH, temperature and the chemical composition of the liquid.

Direct-Coupled Submersible Design

The pump and motor form an integrated submerged unit. No long transmission shaft is required, helping simplify the installation and reduce above-ground space requirements.

Multistage Hydraulic System

Multiple impellers increase pressure progressively, enabling the pump to deliver a nominal head of approximately 40m while maintaining a high flow rate.

Stable Operation

A properly selected hydraulic design and balanced rotating assembly help reduce vibration. Correct submergence, installation and operating-point selection are important for dependable long-term performance.

Configurable for Project Requirements

Available options may include stainless steel grade, voltage, frequency, cable length, discharge flange, control panel, starting method and electrical protection functions.

Typical Applications

The 250QJH167-40-30kW stainless steel borehole pump can be used for:

• Groundwater extraction from deep wells and boreholes;

• Agricultural irrigation and centralized farm water supply;

• Municipal and rural water-supply projects;

• Industrial process-water supply;

• Cooling-water and circulation-system replenishment;

• Raw-water intake from reservoirs, rivers and storage basins;

• Waterworks and treatment-plant intake systems;

• Landscaping and sprinkler irrigation;

• Construction, mining and infrastructure water transfer;

• Applications requiring improved corrosion resistance.

The pump is not intended for liquids containing excessive sand, long fibres or large solid particles. For seawater, brine or chemically aggressive liquids, provide a complete liquid analysis so that the material, sealing system and motor configuration can be evaluated.

Information Required for Pump Selection

1. Required flow rate and total dynamic head;

2. Well casing internal diameter and total well depth;

3. Static water level and pumping water level;

4. Delivery-pipe length, diameter and number of fittings;

5. Sand content, chloride level, pH and water temperature;

6. Available voltage and frequency;

7. Planned installation depth;

8. Required outlet or flange standard;

9. Need for a control panel, VFD or dry-run protection.

The required head should include vertical lift, pipeline friction losses, local resistance and the pressure required at the final discharge point. Well depth alone is not sufficient for selecting the correct pump.

Installation and Operating Recommendations

• Inspect the pump, motor, cable and fasteners before installation;

• Verify that the well diameter provides sufficient clearance for installation and motor cooling;

• Keep the pump inlet below the dynamic water level with adequate submergence;

• Maintain sufficient clearance between the motor and the well bottom;

• Use properly rated lifting equipment, riser pipes and safety cables;

• Never lift or suspend the pump by its electrical cable;

• Check insulation resistance, supply voltage, phase sequence and protection settings before starting;

• Do not operate the pump dry;

• Avoid prolonged operation against a closed discharge valve;

• Protect the motor against overload, phase loss and abnormal voltage;

• Monitor current, flow, pressure, vibration and insulation condition during service.

Optional Accessories

• Stainless steel or carbon-steel riser pipes;

• Submersible power cable;

• Check valve and isolation valve;

• Discharge flanges and pipe fittings;

• Soft-starter control panel;

• Variable-frequency drive control panel;

• Dry-run, overload, phase-loss and leakage protection;

• Level sensors and remote monitoring system.

Why Choose the 250QJH167-40-30kW Pump?

This model combines high flow, moderate head and the corrosion resistance of stainless steel. It is particularly suitable for projects that require continuous water delivery, a compact installation and dependable submerged operation.

Compared with a conventional cast-iron deep well pump, an appropriately selected stainless steel version provides better resistance to rust and can be more suitable for water systems with higher cleanliness or corrosion-resistance requirements.

Frequently Asked Questions

What are the flow, head and power ratings?

The nominal flow rate is approximately 167m³/h, the nominal head is approximately 40m, and the motor power is 30kW. Actual performance depends on the operating water level, pipeline losses, voltage conditions and the selected duty point.

What well diameter is required?

The “250" designation normally refers to the 250mm well-diameter class. The actual well casing must be larger than the pump’s maximum outside diameter and must provide adequate clearance for installation, cooling-water flow and cable routing.

Which stainless steel grade should I choose?

304 stainless steel may be suitable for clean water with relatively low corrosiveness. For higher chloride levels or more aggressive water, 316 or 316L may be considered. The final material should always be selected from a water analysis.

Can the pump operate with a variable-frequency drive?

Yes, provided that the VFD, motor and control settings are compatible. Minimum operating frequency, acceleration time, overload protection and dry-run protection should be set according to the manufacturer’s instructions.

Can this pump be used for seawater?

Only after a dedicated material assessment. Standard 304 stainless steel is generally not recommended for continuous operation in high-chloride seawater. Depending on the conditions, 316L, duplex stainless steel or another seawater-resistant material may be required.

What information is required for a quotation?

Please provide the required material, voltage, frequency, well diameter, installation depth, cable length, outlet standard, control method, destination and any required accessories.

Request a Quote

For the price, performance curve, installation drawing or selection proposal for the 250QJH167-40-30kW stainless steel deep well pump, send us your well diameter, well depth, static water level, pumping water level, required flow, required head, water analysis and electrical supply details.

Our technical team can then confirm the appropriate stainless steel grade, motor configuration, cable length and complete supply scope for your project.

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