JT-750 DC Water Pump for Solar Thermal and Underfloor Heating Circulation Boosting

This JT-750 series DC water pump is engineered to provide auxiliary pressure enhancement in domestic heating applications, particularly suited to solar water heater circuits and underfloor heating systems. Operating on a flexible 12-24 volt DC supply, it delivers a consistent 1.2 cubic metre per hour flow rate with a head range of 3 to 7 metres, improving water movement without requiring high-power AC mains installation. Its compact, horizontal-shaft design and engineering plastic construction offer a corrosion-resistant, lightweight solution for integrating into existing heating setups where space and voltage constraints are considerations.

Features and Construction

The pump incorporates a practical single-stage jet pump principle with a semi-open impeller configuration, promoting reliable fluid movement while minimising blockage risks in clean water environments. Available in multiple threaded variants, it allows for straightforward piping integration into different system layouts.

Material and Build

Housing and internal components are fabricated from engineering plastic, providing a balance of structural integrity and resistance to water corrosion without adding significant weight. The horizontal pump shaft orientation and electric drive mode simplify mounting and alignment within pipework, and the non-blocking performance characteristic ensures consistent operation with clean water as the conveyed medium.

Size and Practical Fit

With a total weight of just 0.18 kg, the pump is easily handled and installed. It features standardised suction and outlet port calibres of either 20 mm or 25 mm, with specific model variants offering 4-point or 5-point threaded connections to match common piping fittings. This dimensional consistency ensures compatibility with typical solar thermal and underfloor heating component layouts.

Uses and Placement

Designed as a process pump for heating systems, its primary role is to maintain or boost water circulation pressure, which can enhance thermal transfer efficiency and reduce temperature stratification in storage tanks or floor circuits.

Event or Professional Use

In professional solar thermal installations or underfloor heating retrofits, this DC pump can serve as an auxiliary circulation unit, particularly where low-voltage DC power is already available from PV panels or battery systems. Its specified clean water operation makes it suitable for closed-loop heating circuits that use treated or softened water to prevent scale buildup.

Everyday Home Use

For homeowners with existing solar water heating or underfloor heating, the pump offers a method to improve circulation without major electrical rewiring, thanks to its 12-24V DC operation. It can help address lukewarm radiators or uneven floor heating by ensuring heated water reaches all circuit extremities effectively.

Benefits and Buying Value

The value proposition centres on its dedicated design for heating applications, low-voltage flexibility, and straightforward integration into threaded piping systems, providing a targeted solution for circulation challenges.

Reuse and Low Maintenance

Engineering plastic construction reduces corrosion concerns in water environments, potentially extending service life in clean water systems. The non-blocking design minimises maintenance interventions, provided the pump is used only with clean water as intended.

Why Choose This Product

This pump is specified for heating system boosting with clear performance parameters: 1.2 m³/h flow, 3-7 m head, and 12-24V DC operation. Its multiple thread and voltage variants (JT-750B4, B5, D4, D5 in 12V and 24V) allow selection to match your existing port fittings and power supply, offering a precise component rather than a generic pump.