DN25 Insulated Low Loss Header
Hydraulic Separation for Heating Systems
A low loss header separates the primary heat-source circuit from the secondary heating circuit.
As a result, pumps on each side can operate with different flow rates. This helps reduce unwanted interaction between the circuits.
The arrangement can prove useful where a system contains several pumps or heating zones. In addition, it can simplify hydraulic design on suitable heat pump installations.
However, every heating system is different. Therefore, always follow the heat pump or heating-system manufacturer’s hydraulic requirements.
Designed for Air Source Heat Pumps
Modern air source heat pumps need stable water flow to operate correctly.
A low loss header can provide hydraulic separation where the system design requires independent primary and secondary circuits.
For example, the heat pump circuit can maintain its required flow. Meanwhile, the heating system can operate at a different flow rate.
This makes low loss headers useful in some ASHP installations with multiple zones, pumps or mixed heating circuits.
However, a low loss header is not required on every heat pump system. The system designer should confirm whether hydraulic separation is appropriate.
2 Inlets and 2 Outlets 1″ Fitting
This model features a simple 2-in/2-out configuration.
The four DN25 female connections allow the installer to connect:
- Primary flow
- Primary return
- Secondary flow
- Secondary return
This arrangement provides a compact way to separate two hydraulic circuits.
DN25 Female Connections
All main connections use DN25 female threaded connections.
Therefore, installers can select suitable adaptors and fittings for the surrounding heating pipework.
Always confirm the thread type and adjoining fittings before installation. Also, check the existing connections when replacing another low loss header.
Supplied with Insulation
This low loss header includes insulation.
The insulation helps reduce heat loss from the header body. In addition, it helps create a cleaner finished installation.
This can prove especially useful in plant rooms and other areas where exposed heating components would otherwise lose heat.
Why Use a Low Loss Header?
A low loss header helps hydraulically separate two parts of a heating system.
Potential benefits include:
- Independent primary and secondary flow rates
- Reduced interaction between circulation pumps
- Easier hydraulic system design
- Support for multi-zone heating systems
- Compact system separation
- Useful integration with heat pumps
- Suitable for mixed heating circuits
- Reduced heat loss with supplied insulation
However, correct system design remains essential.
Suitable Applications
The DN25 Low Loss Header can suit compatible:
- Air source heat pump systems
- Ground source heat pump systems
- Underfloor heating installations
- Radiator heating systems
- Mixed radiator and UFH systems
- Multi-zone heating systems
- Boiler installations
- Plant rooms
- Heating system upgrades
- Replacement heating projects
Low Loss Header for Mixed Heating Systems
Some properties combine underfloor heating with radiators.
These circuits can have different flow requirements. Therefore, hydraulic separation may help the system operate correctly when the design requires separate pumps.
For example, one circuit may supply radiators. Meanwhile, another circuit may serve an underfloor heating manifold.
A low loss header provides a common hydraulic separation point between these circuits.
Replacement Low Loss Header
Low loss headers may eventually need replacement during heating-system maintenance.
Common reasons can include:
- Leakage
- Corrosion
- System alterations
- Heat pump replacement
- Heating upgrades
- Plant room refurbishment
- Changes to zoning
- Hydraulic system redesign
Always compare the existing connections before ordering. In addition, confirm that DN25 suits the required system flow.
Technical Specifications
| Specification | Details |
|---|---|
| Product | Low Loss Header |
| Connection Size | DN25 Female 1″ fitting |
| Configuration | 2 In / 2 Out |
| Main Connections | Four |
| Insulation | Included |
| Function | Hydraulic separation |
| Application | Compatible heating and heat pump systems |
| Installation | New installation or replacement |
Choosing the Correct Low Loss Header
First, confirm the required connection size.
Next, check the number of primary and secondary circuits. This version provides two connections in and two connections out.
Also, check the required system flow rates.
Finally, confirm that a low loss header forms part of the approved hydraulic design.
Do not choose a header from connection size alone. The overall system design must also suit the component.
Why Buy From Kudos Trading?
Kudos Trading supplies heating and plumbing components to installers throughout the UK.
We are also expanding our range of air source heat pump replacement and installation parts.
Therefore, installers can source more of the components needed for ASHP work from one supplier.
In addition, we stock pumps, valves, filters and system protection products for modern heating installations.
Frequently Asked Questions
What Does a Low Loss Header Do?
A low loss header hydraulically separates two heating circuits.
Therefore, the primary and secondary pumps can operate without directly affecting each other’s flow.
Is a Low Loss Header Suitable for a Heat Pump?
Yes, where the heat pump system design requires hydraulic separation.
However, not every air source heat pump installation needs one. Always follow the manufacturer’s hydraulic design.
What Does 2 In 2 Out Mean?
The header has four main connections.
Two serve one circuit, while the other two serve the second circuit.
What Size Connections Does This Header Have?
This version uses DN25 female connections.
Always check the adjoining fittings before installation.
Does the Low Loss Header Include Insulation?
Yes. This version comes with insulation.
Therefore, you do not need to source a separate insulation jacket for the header body.
Can It Be Used with Underfloor Heating?
Yes, where the hydraulic system design requires separation.
For example, it can help separate a heat-source circuit from an underfloor heating distribution circuit.
Can I Use It with Radiators and Underfloor Heating?
Yes, a low loss header can form part of a mixed heating system.
However, the pumps, controls and flow requirements must suit the overall design.
Is a Low Loss Header the Same as a Buffer Tank?
No.
Both can provide hydraulic separation in suitable systems. However, a buffer tank also adds stored water volume.
A low loss header mainly provides hydraulic separation without significant water storage.
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Next Working Day Delivery
We hold our products in stock at our 7,000 sq ft Nottingham warehouse.
We also hold stock at our 3,000 sq ft warehouse in Market Harborough.
Order before 12pm for dispatch using our tracked next-working-day DPD service.
Delivery options and charges depend on your postcode.
Collection Available
Alternatively, collect your order from our Nottingham location.
You can also enjoy a free tea or coffee while you visit.
