Pump group DN25 with screw connection & distribution bar

WITA pump group DN 25 with 3-way mixer, actuator and high-efficiency pump

Product overview

The WITA DN 25 pump group is a compact and powerful solution for mixed heating circuits in residential and commercial buildings. It combines a 3-way T-mixer with bypass and the SM actuator. W05 as well as a WITA high-efficiency pump and can be mounted with the flow on the left or right.

Performance features

High-quality materials such as steel and brass, as well as PTFE and EPDM seals, ensure durability and reliability. The pump length is 180 mm, the Kvs value is 5.4 m³/h; operating pressure up to 6 bar and operating temperature up to 110 °C are designed for demanding applications.

Components and equipment

The scope of delivery includes the 3-way mixer with bypass, the SM actuator. W05, the high-efficiency pump, two centrally placed ball valves with integrated thermometers (0–120 °C), a cataphorically coated steel spacer and EPP insulation.

Areas of application

This pump unit is ideally suited for mixed heating circuits, especially in underfloor heating systems or systems with multiple radiators. Its modular design makes it equally suitable for single-family homes, apartment buildings, and commercial applications.

Energy efficiency

The WITA high-efficiency pump reduces power consumption and operates particularly quietly. In conjunction with the actuator and the precision mixing valve, the heating water temperature is optimally regulated, increasing comfort and reducing operating costs.

Installation and assembly

The compact design and the option to mount the flow pipe on the right or left facilitate installation in confined boiler rooms. The EPP insulation reduces heat loss and simplifies the retrofitting of existing systems.

Technical specifications (excerpt)

Top/bottom connection: 1". Pump length: 180 mm (R 6/4" AG). Materials: Steel, brass, EPP insulation. Sealing material: PTFE, EPDM. Temperature display: 0–120 °C. Max. operating temperature: 110 °C. Max. operating pressure: 6 bar. Kvs: 5.4 m³/h.

Scope of delivery

Complete pump assembly, operating instructions, installation instructions. Screw set available as an option.

Conclusion

The WITA DN 25 pump group is a well-designed, robust solution for modern heating circuits: efficient, energy-saving, and easy to install. It offers professional features and durable quality for a wide range of heating requirements.

Sunex heating circuit manifolds – variants for 2 and 3 circuits (DN20/DN25)

Product overview

The Sunex heating circuit manifold reliably distributes heating water to two or three independent circuits and is suitable for both underfloor heating and radiators. It is available in several versions (DN20, DN25, with external thread).

Application areas

Ideal for new construction and modernization: The manifold optimizes heat distribution in residential and commercial buildings. In mixed systems with different flow temperatures, it ensures precise control and consistent comfort.

Construction and materials

A robust steel main body and corrosion-resistant brass nuts guarantee durability. 30 mm thick EPP insulation reduces heat loss and increases efficiency; the M8 mounting allows for secure wall installation.

Technical specifications and performance

Maximum operating temperature: 110 °C, Maximum operating pressure: 6 bar. Power range up to 54 kW (depending on the model, ΔT = 20 K). Maximum flow rates: up to 2.3 m³/h for DN25, up to 1.2 m³/h for DN20. Dimensions and weight vary depending on the model.

Assembly and connection

Clearly marked boiler and heating circuit connections simplify installation. Available connection options include male and female threads. 1" or 5/4"/6/4" Sizes. The included mounting hardware allows for quick installation and good access for maintenance.

Advantages at a glance

The Sunex manifold combines robust construction with efficient thermal insulation and flexible connection options. It reduces energy losses, simplifies installation and maintenance, and is scalable for different performance requirements.

Technical specifications (selection)

DN20 2-circuit: 193 x 137 x 552 mm, weight approx. 5.76 kg, max. output 29 kW, max. flow rate 1.2 m³/h, connection boiler side 1" AG, heating circuit side 1" IG.

DN25 2/3 circuits: 193 x 137/140 x 552/862 mm, weight 6.05–8.49 kg, max. output 54 kW, max. flow rate 2.3 m³/h, boiler side connection 5/4" AG, heating circuit page 6/4" IG or 1" IG.

Conclusion

The Sunex heating circuit manifold is a reliable choice for efficient heat distribution in modern heating systems. Flexible options, robust materials, and practical insulation make it a suitable addition for new construction and retrofitting.