300QJR Hot Water Deep Well Submersible Pump China Factory Suppliers

Looking for reliable China suppliers? Our factory provides the 300QJR Deep Well Submersible Pump for high-temp water. We undertake OEM processing to design and manufacture non-standard submersible motors and pumps according to GB/T2816-2014 and GB/T2818-2014 standards. Contact via WhatsApp 17855846335.

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The 300QJR Deep Well Submersible Pump is a high-performance hot water pumping solution engineered for stability and efficiency. Featuring a motor constructed from premium 50W400 grade cold-rolled silicon steel, this pump minimizes stator iron loss and self-heating, ensuring optimal operational longevity. Its specialized motor windings are designed for high temperature resistance and anti-aging, while the 3CR13 stainless steel blade shaft provides superior durability in demanding thermal environments.

Designed for versatility, the 300QJR series is compatible with frequency converters, allowing for automatic adjustment of water output based on real-time demand. Whether utilized for industrial hot water equipment or large-scale water supply, this pump delivers a consistent and reliable flow. With a robust water-cooled three-phase asynchronous motor and precision CAD design, it represents the ideal choice for professionals seeking a lasting, high-efficiency hot water supply system.

Detailed Parameters

Power Supply	Three-phase AC 380V (±5%), 50HZ (±1%)	Max Immersion Depth	Up to 70 Meters
Water Temperature	Maximum 20 °C (Standard) / High Temp (QJR)	PH Value Range	6.5 - 8.5
Solid Impurities	≤ 0.01% (Mass Ratio)	Chloride Ion Content	≤ 400mg/L
Hydrogen Sulfide	≤ 1.5mg/L	Installation Mode	Vertical Placement Only
Shaft Material	3CR13 Stainless Steel	Cooling Method	Water-cooled Submersible

Key Advantages

High-Grade Materials

Utilizes 3CR13 stainless steel blade shafts and high-temp resistant bushings for extreme durability.

Low Energy Loss

50W400 grade silicon steel reduces iron loss and minimizes self-heating during operation.

Thermal Resistance

Specially designed windings provide superior high-temperature resistance and anti-aging properties.

Smart Control

Fully compatible with frequency converters for automatic flow adjustment based on usage.

Sand Protection

Integrated sand discharging rings and dual oil seals prevent particles from entering the motor.

Precision Engineering

Designed via computer CAD for a streamlined structure and optimized technical performance.

Product Gallery

Management Platforms

Deep Well Intake

Optimized for deep well water extraction with high stability and lift capacity.

Agricultural Irrigation

Provides consistent water flow for large-scale farming and garden irrigation needs.

High-Rise Supply

Engineered to handle the pressure requirements of high-rise residential water supply.

Mountain Water Supply

Ideal for challenging terrains and mountain-based water distribution networks.

River Water Intake

Efficiently manages water intake from rivers and ponds for industrial use.

Domestic Water

A reliable solution for domestic water needs, ensuring a steady daily supply.

Investment Return Comparison

Feature	Standard Pumps	300QJR Series
Energy Efficiency	Moderate	High (50W400 Steel)
Thermal Stability	Low-Mid	Superior (Heat Resistant)
Maintenance Cycle	Frequent	Extended (Stainless Steel)
Flow Control	Manual/Fixed	Automatic (VFD Compatible)
Lifespan	Short-Medium	Long-term Industrial Grade

Frequently Asked Questions

Q: Can the 300QJR pump be used for muddy water?

No, this is a clean water pump. Pumping sediment or muddy water is strictly prohibited as it can cause premature wear and damage to the impellers.

Q: How does the frequency converter benefit the pump?

The frequency converter allows the pump to automatically adjust its output based on the volume of water used, reducing energy waste and motor stress.

Q: What is the minimum distance from the pump to the bottom of the well?

The distance between the bottom of the pump and the bottom of the well should not be less than 3 meters to avoid sucking in silt.

Q: Is it necessary to fill the motor cavity with water before use?

Yes, the motor cavity must be filled with clean, non-corrosive water to ensure proper lubrication and cooling of the bearings.

Q: What should I do if the pump is stored in freezing temperatures?

You must drain all water from the motor cavity to prevent ice damage caused by low temperatures during storage.

Q: What are the common wearing parts for this submersible pump?

The primary wearing parts include the impeller, shaft sleeve, rubber shaft sleeve, and sealing rings, which should be inspected annually.

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