250QJP Music Fountain Submersible Pump China Suppliers Factory

Leading China factory and suppliers of 250QJP series submersible pumps. We undertake OEM processing and design non-standard motors and pumps according to user requirements, adhering to GB/T2816-2014 and GB/T2818-2014 standards. Contact via WhatsApp 17855846335.

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Details

Detailed Parameters

Power Supply	Three-phase AC 380V (±5%), 50Hz (±1%)	Max Diving Depth	Up to 70 Meters
Water Temperature	Maximum 20 °C	PH Value Range	6.5 - 8.5
Solid Impurities	≤ 0.01% (Mass Ratio)	Chloride Ion Content	≤ 400mg/L
Hydrogen Sulfide	≤ 1.5mg/L	Minimum Well Clearance	3 Meters from bottom
Rated Flow Range	0.7 - 1.2 times rated flow	Motor Structure	Closed or Water-filled Wet Structure

Key Advantages

Corrosion Resistance

Stainless steel bushings and alloy copper sleeves eliminate rust issues common in traditional bearings.

High Duty Cycle

Cold rolled silicon steel prevents overheating during frequent starts, extending motor lifespan.

Water Lubrication

Eliminates oil leakage risks and burnout due to lack of lubrication via a wet-structure design.

Versatile Mounting

Specially designed for music fountains; all models support both vertical and horizontal installation.

Precision Engineering

Computer CAD design ensures a simple structure with superior technical and hydraulic performance.

Sand Prevention

Dual oil seals and a dedicated sand ring prevent particles from entering the motor cavity.

Product Gallery

Management Platforms

Application Scenarios

Ideal for deep well intake, high-rise water supply, and agricultural irrigation.

Installation Support

Comprehensive guidance for steel and plastic pipe installation in various well types.

Safety Monitoring

Requires external overload and phase protection for maximum operational safety.

Thermal Control

Integrated pressure regulating diaphragm manages internal expansion due to heat.

Component Access

Standardized wearing parts like impellers and shaft sleeves for easy replacement.

Maintenance Cycles

Recommended annual disassembly for inspection and wear-part replacement.

Investment Return Comparison

Feature	Standard Ball-Bearing Pump	250QJP Series Pump
Bearing Life	Prone to rust/wear	Long-life water lubricated
Start-Stop Stress	High thermal risk	Low heat silicon steel core
Maintenance	Frequent oil/bearing checks	Simplified annual check-up
Installation	Primarily Vertical	Vertical & Horizontal
Operational Cost	High due to part failure	Low due to efficiency/durability

Frequently Asked Questions

Q: Can the 250QJP pump be installed horizontally?

Yes, unlike many standard submersible pumps, all models in the 250QJP series are specifically designed to be used horizontally, making them perfect for music fountains.

Q: How do I prevent the motor from burning out during installation?

Ensure the motor cavity is completely filled with clean, non-corrosive water before use to provide essential lubrication and cooling. Never run the pump without water.

Q: What are the water quality requirements for these pumps?

The pumps are designed for clean water with a PH value between 6.5 and 8.5, temperature under 20°C, and minimal solid impurities (≤ 0.01%).

Q: What is the maximum depth these pumps can be submerged?

The maximum diving depth for the 250QJP series is 70 meters, provided the pump is installed according to the specified technical guidelines.

Q: How often should the pump be maintained?

We recommend a full disassembly and maintenance check once a year, or every two years if the pump has been continuously immersed.

Q: What should I do if the pump starts vibrating violently?

Immediately shut down the machine. Vibration may be caused by the pump running against the well wall, air in the system, or internal mechanical wear.

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