500 m³/h High Flow 65 m Head Copper Impellers Submersible Deep-Well Pump for

The 300QJH500-65 submersible deep-well pump is engineered for high-capacity groundwater extraction and large-scale clean-water delivery. Its rated operating point is 500 m³/h at 65 m head. The hydraulic section features a copper pump head and copper impellers, while stainless steel is used for the specified pump components.

This material configuration is suitable for water-supply projects that require high flow, reliable submerged operation, and carefully selected water-contact materials.

The exact motor power, number of stages, stainless steel grade, copper grade or alloy, outlet size, voltage, frequency, and cable length should be stated in the technical quotation.

At the rated operating point, the pump can deliver approximately:

• 500 cubic metres per hour
• 8.33 cubic metres per minute
• 138.9 litres per second
• 500,000 litres per hour

This capacity makes the pump suitable for projects where smaller deep-well pumps cannot provide enough water.

Actual flow depends on the total system head, well yield, pipeline diameter, delivery distance, and required outlet pressure. The manufacturer's performance curve should be checked before the model is approved.

The rated head of 65 m must cover all resistance in the water-delivery system, including:

• Dynamic water level
• Elevation from the wellhead to the discharge point
• Friction loss in the rising pipe
• Resistance in horizontal pipelines
• Losses through valves, bends, and fittings
• Required pressure at the final outlet

The 65 m head does not mean that the pump must be installed exactly 65 m deep. Pump installation depth is mainly determined by the dynamic water level, required submergence, and well construction.

The pump uses a copper pump head and copper impellers in its hydraulic section. The precise copper grade or copper alloy should be confirmed, because material performance depends on its chemical composition and the actual water conditions.

Before ordering, buyers should provide a water analysis containing:

• pH value
• Chloride concentration
• Salinity
• Dissolved solids
• Sand content
• Water temperature
• Corrosive chemicals

Copper materials should not automatically be considered suitable for every corrosive liquid. Water chemistry and material compatibility must be reviewed for each project.

The specified stainless steel components provide durable submerged construction and improved resistance to rust in suitable clean-water conditions.

The quotation should clearly state which components are stainless steel and identify the material grade — such as the pump shaft, motor shell, coupling, inlet section, or other water-contact parts. Buyers should not rely only on the general description "stainless steel pump."

The 300QJH500-65 can be considered for:

• Large-scale groundwater extraction
• Municipal and rural water supply
• Agricultural irrigation
• Reservoir and storage-tank filling
• Industrial clean-water transfer
• Cooling-water supply
• Water-treatment plant intake
• Long-distance water delivery
• Centralized livestock water supply
• Large commercial water systems

This model is intended for clean water. It should not be used for sewage, sludge, fibres, or water containing large solid particles.

A pump with a rated flow of 500 m³/h requires a well with sufficient sustainable yield. The well should undergo a pumping test before the pump is selected.

Buyers should confirm:

• Well depth
• Internal casing diameter
• Static water level
• Dynamic water level
• Sustainable well yield
• Well straightness
• Sand content
• Distance from the pump to the well bottom

The pump should be installed below the lowest expected dynamic water level and above the sediment zone. The actual pump outside diameter must be checked against the internal casing diameter along the complete installation path.

The rising pipe and external delivery pipeline must be sized for the required 500 m³/h flow. An undersized pipe can create excessive friction loss, reduce the delivered flow, and increase operating costs.

The pipeline design should consider:

• Internal pipe diameter
• Working pressure
• Maximum possible system pressure
• Pipe length
• Flow velocity
• Non-return valve
• Isolation valve
• Pipe and wellhead load capacity

The supplier should provide the maximum or shut-off head so that the complete discharge system can be designed safely.

The motor power has not been specified and should be confirmed from the final hydraulic design. The control system should include:

• Overload protection
• Short-circuit protection
• Phase-loss and phase-sequence protection
• Abnormal-voltage protection
• Dry-running protection
• Low-water-level protection
• Motor-temperature monitoring when available

The operating voltage, frequency, starting method, cable cross-section, and cable length must be matched to the installation site.

A complete technical offer should include:

• Pump performance curve
• Rated efficiency
• Motor power and efficiency
• Rated voltage, frequency, and current
• Pump dimensions and total weight
• Outlet size and connection standard
• Number of hydraulic stages
• Pump outside diameter
• Copper material grade
• Stainless steel material grade
• Maximum permitted sand content
• Maximum water temperature
• Installation drawing
• Cable specification
• Spare-parts list

Please provide:

1. Required flow and total head
2. Well depth and internal diameter
3. Static and dynamic water levels
4. Tested well yield
5. Pipeline length and diameter
6. Required terminal pressure
7. Water analysis
8. Site voltage and frequency
9. Required cable length
10. Required quantity
11. Required material grades
12. Inspection or certification requirements