125QJB Deep Well Submersible Pump China Factory and Reliable Suppliers

Looking for a high-efficiency 125QJB deep well submersible pump? As leading China suppliers and a professional factory, we offer OEM processing and non-standard designs based on GB/T2816-2014 and GB/T2818-2014 standards. Contact us via WhatsApp 17855846335 for custom submersible motor and pump solutions.

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Details

Product Overview

The 125QJB Deep Well Submersible Pump is a high-efficiency water extraction solution engineered for precision and durability. Featuring an advanced frequency conversion winding design, this pump ensures stable operational conversion between 1HZ and 50HZ, significantly reducing energy consumption while extending the overall service life of the motor.

Designed for versatility, the 125QJB series is ideal for deep well water intake, agricultural irrigation, and high-rise water supply. Its robust water-loaded wet submersible structure provides superior cooling and lubrication, ensuring peak performance even in demanding underground environments up to 70 meters in depth.

Detailed Parameters

Power Supply	Three-phase AC 380V (±5%), 50HZ (±1%)	Max Diving Depth	Up to 70 meters
Water Temperature	≤ 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	Motor Structure	Water-filled wet structure
Applicable Well Dia.	125mm and above	Cooling Method	Water Lubrication

Key Advantages

Sand Prevention

Equipped with dual oil seals and a professional sand ring structure to prevent particles from entering the motor.

Energy Efficiency

Frequency conversion design optimizes power usage and reduces operating costs for long-term use.

High Insulation

Utilizes premium submersible winding wire for exceptional insulation and electrical safety.

CAD Precision

Computer-aided design ensures a simple yet high-performance structure with optimized hydraulics.

Thermal Stability

Integrated regulating diaphragm manages internal pressure changes caused by motor temperature rises.

Water Lubrication

Full water-lubricated bearings reduce friction and wear, extending the maintenance cycle.

Product Gallery

Management Platforms

Application Versatility

Optimized for river intake, garden irrigation, and domestic water supply.

Stable Operation

Consistent flow rates (0.7-1.2 times rated flow) for balanced performance.

Safety Protection

Compatible with overload, phase loss, and undervoltage protection devices.

Easy Installation

Simplified coupling and flange connections for rapid deployment.

Durable Materials

High-grade components including specialized rubber bearings and steel shafts.

Maintenance Friendly

Standardized disassembly sequence for efficient impeller and seal replacement.

Investment Return Comparison

Feature	Standard Submersible Pump	125QJB Series Pump
Energy Usage	High Constant Power	Low (Frequency Conversion)
Motor Life	Average	Extended (Wet-Cooling)
Sand Resistance	Low/Moderate	High (Sand Ring System)
Installation Cost	Moderate	Competitive / Low
Maintenance Cycle	Frequent	Infrequent / Optimized

Frequently Asked Questions

Q: What are the primary applications for the 125QJB submersible pump?

It is ideal for deep well water intake, high-rise building water supply, mountain water distribution, agricultural and garden irrigation, and general domestic water needs.

Q: How does the frequency conversion winding benefit the user?

The frequency conversion design allows the motor to operate stably between 1HZ and 50HZ, which reduces energy consumption and significantly increases the lifespan of the motor.

Q: Can this pump be used to extract mud or sandy water?

No. This pump is specifically designed for clear water. It is strictly prohibited to use it for digging new wells or pumping out mud and sand, as this will damage the internal components.

Q: What is the maximum installation depth for this model?

The diving depth should not exceed 70 meters. Additionally, it is recommended that the bottom of the pump be at least 3 meters above the bottom of the well.

Q: What precautions should be taken during winter storage?

To prevent freezing damage, you must discharge the water from the motor cavity in winter and store the unit in an environment below 40°C without corrosive gases.

Q: What are the required electrical protections for this pump?

The pump must be equipped with starting equipment that includes short circuit overload protection, phase loss protection, undervoltage protection, grounding, and idling protection.

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