Heat Pump Flow Balancing Valve with Fill & Flush – 4 to 40 l/min 22mm & 28mm

Flow Balancing for Air Source Heat Pumps

Correct water flow plays an important role in heat pump performance. Therefore, installers need an easy way to balance the system during commissioning and servicing.

This heat pump flow balancing valve provides a clear flow indication and an adjustable 4-40 litres per minute range. As a result, engineers can set the required circuit flow more accurately.

We stock both 22mm and 28mm versions. This gives installers a choice for different heat pump pipework layouts.

Built-In Fill and Flush Connections

The valve combines flow balancing with convenient fill and flush access.

Therefore, engineers can use one component for several important system tasks. The fill and flush connections help during commissioning, maintenance and water replacement.

This compact arrangement can also reduce the number of separate fittings required around the installation.

Available in 22mm and 28mm

Choose the size that matches your system pipework:

• 22mm – 4-40 L/min
• 28mm – 4-40 L/min

Always confirm the existing pipe size and required flow rate before ordering a replacement.

Ideal for Heat Pump Repairs and Replacement

Flow balancing valves can eventually require replacement during the life of a heating system.

For example, the adjustment mechanism may become difficult to operate. Alternatively, the flow indicator may become damaged or difficult to read.

This valve provides a practical replacement option where the existing system uses the same connection size and flow requirements.

However, heat pump manufacturers use different system designs. Therefore, always compare the existing valve specification before ordering.

Why Is Flow Balancing Important?

An air source heat pump relies on suitable water flow through the heating system.

Too little flow can reduce heat transfer. Meanwhile, incorrect balancing may affect system performance and comfort.

A flow balancing valve allows the installer to set the circuit more accurately. Therefore, it can help the system operate closer to its intended design conditions.

Always follow the heat pump manufacturer’s required flow rate when commissioning the system.

Useful for Commissioning and Servicing

This valve is suitable for both new installations and maintenance work.

Typical uses include:

• Air source heat pump installations
• Heat pump replacement work
• System commissioning
• Heating system balancing
• Filling heating circuits
• Flushing heating systems
• Maintenance and servicing
• Low-temperature heating systems
• Underfloor heating installations

Technical Specifications

Comparable 22mm and 28mm products with this specification are also published for domestic and commercial low-temperature heating applications.

Choosing the Correct Replacement Valve

First, check the pipe connection on the existing installation. Then confirm the required system flow rate.

Choose 22mm where the existing pipework uses 22mm connections. Alternatively, select 28mm for compatible 28mm pipework.

Also, check the heat pump manufacturer’s hydraulic requirements. Do not choose a replacement based on pipe size alone.

Does This Valve Fit Every Heat Pump?

No. This is a system component rather than a manufacturer-specific heat pump spare.

It can suit many compatible air source heat pump installations. However, the pipe size and hydraulic requirements must match.

Therefore, check the existing system before ordering. This is particularly important when replacing an original manufacturer’s component.

Why Buy From Kudos Trading?

Kudos Trading supplies heating and plumbing components to professional installers throughout the UK.

We are expanding our range of air source heat pump replacement parts and accessories. Therefore, installers can source more of the components needed for heat pump repair and maintenance from one supplier.

In addition, our experienced team can help with product and sizing questions before you order.

Frequently Asked Questions

What Size Heat Pump Flow Balancing Valve Do I Need?

Check the existing pipework first. We stock both 22mm and 28mm versions.

You should also confirm the required flow range. Both versions cover 4-40 litres per minute.

What Does a Heat Pump Flow Balancing Valve Do?

It allows an installer to monitor and adjust water flow through the heating circuit.

Correct flow helps the heat pump transfer heat into the system effectively. Therefore, installers normally check flow during commissioning and servicing.

What Are the Fill and Flush Connections For?

They provide convenient access when filling or flushing the heating circuit.

This can make commissioning and future maintenance easier. In addition, it reduces the need for separate fill and flush fittings.

Can I Use This as a Replacement Heat Pump Valve?

Yes, where the existing system uses compatible connections and flow requirements.

However, check the original valve and heat pump specification first. This product is not tied to one heat pump manufacturer.

Is the Flow Range the Same on Both Sizes?

Yes. Both the 22mm and 28mm versions have a 4-40 L/min flow range.

Can I Use It With Underfloor Heating?

It can form part of a compatible low-temperature heating system. Heat pumps and underfloor heating often operate together.

However, the system designer or installer should confirm the required flow and valve position.

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Next Working Day Delivery

All products are held in stock across our UK warehouses, including our 7,000 sq ft Nottingham warehouse.

Order before 12:00pm 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.