JT-750 DC Water Pump: Low-Voltage Booster for Solar Heating and Underfloor Systems

Designed for integration with renewable energy setups, the JT-750 DC water pump serves as a reliable circulation booster for solar thermal water heaters and hydronic underfloor heating systems. Its 12-24 volt DC operation allows it to be powered directly from photovoltaic panels or battery banks, eliminating the need for an AC inverter and simplifying off-grid or efficiency-focused installations. With a flow capacity of 1.2 cubic metres per hour and a head range of 3 to 7 metres, this pump provides the necessary pressure to move clean water through closed-loop heating circuits, ensuring consistent thermal transfer from your heat source to the distribution points.

Features and Construction

The JT-750 pump is built for practical, long-term use in residential and small commercial heating applications, focusing on reliable performance with minimal maintenance.

Material and Build

The pump's key components are moulded from engineering plastic, selected for its resistance to corrosion and scaling when used with clean water. This material choice supports the pump's stated non-blocking performance, reducing the risk of failures due to debris accumulation in systems with proper filtration. The internal mechanism uses a semi-open impeller design within a horizontal, single-stage jet pump structure, creating the pressure needed for circulation without complex multi-stage assemblies.

Size and Practical Fit

With a compact weight of just 0.18 kilograms, the pump is easy to handle and install into existing pipework. It is offered in specific threaded configurations, identified by model codes such as JT-750B4 and JT-750D5, corresponding to 4-point or 5-point threaded brass fittings. The suction and outlet ports are sized at either 20mm or 25mm in diameter, allowing for matching with standard metric piping used in European heating installations. This variety ensures you can select the model that directly fits your system's connection requirements.

Uses and Placement

This DC pump is tailored for applications where low-voltage, efficient water movement is a priority, particularly in modern heating and renewable energy contexts.

Event or Professional Use

For professional installers and renewable energy technicians, the JT-750 provides a specified component for boosting circulation in solar thermal collector loops or as a secondary pump in underfloor heating manifolds. Its clear performance parameters—1.2 m³/h flow, 3-7m head, 0.015-0.035 kW power draw—allow for precise system sizing and integration. The availability of 12V and 24V models, each with specific amperage draws noted in the specifications, enables correct electrical system design, whether for a 12V2A or 24V2A supply without the pump.

Everyday Home Use

Homeowners with solar water heating or wood pellet boiler systems can use this pump to improve the efficiency of hot water distribution, especially in setups where the primary pump's head is insufficient for the property's layout. Its quiet, low-power DC operation is suitable for indoor utility rooms, and the non-blocking design reduces the need for frequent maintenance checks, provided the system water is kept clean as intended.

Benefits and Buying Value

The value of the JT-750 pump lies in its focused design for specific heating applications, offering a practical solution based on measurable performance data.

Reuse and Low Maintenance

The engineering plastic construction and non-blocking performance claim indicate a design intent for longevity with clean water. While no specific lifespan is stated, the material's corrosion resistance suggests suitability for long-term use in closed-loop heating systems where water treatment is maintained. The simple horizontal shaft and impeller design also points to straightforward servicing if required.

Why Choose This Product

Choosing this pump is a decision based on matching its concrete specifications to your system's needs. It provides a DC-powered, threaded circulation solution with published flow and head figures, avoiding the guesswork associated with unspecified generic pumps. Its value is in its applicability: if you require a 12V or 24V booster pump with specific threaded connections for a solar thermal or underfloor heating project, the JT-750's documented options allow for a precise and supported selection.