22mm Fill & Flush Valve | Heat Pump & Heating | Kudos Trading

22mm Fill & Flush Valve

Easy Heating System Filling and Flushing

The 22mm Fill & Flush Valve provides a convenient service point within a heating system.

Installers can use it when initially filling a system. In addition, it provides access for flushing during commissioning or maintenance.

The valve can also help when adding compatible heating-system cleaners or water treatment products.

As a result, engineers can carry out several servicing tasks from one accessible fitting.

Ideal for Air Source Heat Pumps

Air source heat pump systems need clean water and reliable circulation.

Therefore, installers may need to flush the system during commissioning or future maintenance.

A dedicated fill and flush valve makes this process easier. It also provides a convenient connection point for suitable flushing equipment.

The 22mm size suits compatible heat pump systems that use 22mm heating pipework.

Always follow the heat pump manufacturer’s hydraulic and water-treatment requirements.

Three-Valve Design

The valve uses two isolation ball valves and a central T-port diverting ball valve.

This arrangement allows the installer to direct water through the fill and flush connections.

Therefore, the system can be flushed without dismantling surrounding pipework.

Protective blanking caps also close the service connections when they are not in use. Comparable 22mm fill and flush valves use this arrangement for heating-system commissioning and treatment.

22mm Compression Connections

This version uses 22mm compression connections.

Therefore, it integrates easily into compatible 22mm copper heating pipework.

Compression connections can also simplify future component replacement.

Always check the existing pipe size before ordering.

Ideal for System Commissioning

New heating systems need thorough commissioning before normal use.

For example, installers may need to remove installation debris and trapped contaminants.

The fill and flush valve provides an accessible connection for this process.

After flushing, installers can then refill the heating circuit and complete the required water treatment.

Useful During Heat Pump Servicing

Heat pump systems will need maintenance throughout their working life.

For example, an engineer may need to:

• Replace system water
• Flush debris from the circuit
• Add heating system cleaner
• Add inhibitor
• Remove contamination
• Replace system components
• Commission replacement equipment

A permanent fill and flush point makes these jobs easier.

Suitable for Water Treatment

The fill and flush ports can provide access when using compatible heating-system chemicals.

For example, an engineer may use them while cleaning or treating a closed heating circuit.

However, always follow the chemical manufacturer’s instructions.

Also, make sure the treatment suits the heat pump, seals and other system components.

Brass Construction

The valve uses a durable brass body.

Therefore, it suits demanding heating applications and regular servicing.

The compact construction also reduces the amount of separate pipework required around the service point.

Technical Specifications

The 10 bar pressure rating and 2°C to 85°C temperature range match the published specification for this 22mm valve design.

Why Use a Dedicated Fill & Flush Valve?

A dedicated service valve can make future system maintenance much easier.

Key benefits include:

• Easy system filling
• Convenient flushing access
• Simple connection for flushing equipment
• Useful for system commissioning
• Suitable for adding water treatment
• 22mm heating connections
• Compact installation
• Durable brass construction
• Useful for ASHP installations
• Suitable for central heating
• Suitable for compatible underfloor heating systems
• Helps simplify future servicing

Fill & Flush Valve vs Filling Loop

A fill and flush valve performs a different role from a standard filling loop.

A filling loop normally introduces mains water into a sealed heating circuit.

By contrast, a fill and flush valve provides service connections for filling and flushing the wider circuit.

Therefore, installers may use both components within the same heating installation.

Fill & Flush Valve vs Flow Balancing Valve

These products also perform different jobs.

A fill and flush valve provides access for system filling and cleaning.

Meanwhile, a flow balancing valve allows an installer to monitor and adjust circulating water flow.

Some heat pump products combine both functions within one assembly.

However, a standard fill and flush valve does not provide flow-rate measurement.

Where Should the Valve Be Installed?

Install the valve in an accessible position.

This helps engineers connect hoses during commissioning and future servicing.

However, the best location depends on the heating-system design.

Therefore, always follow the system designer’s hydraulic layout.

Replacement Fill & Flush Valve

A fill and flush valve may eventually need replacement.

Possible reasons include:

• Leakage
• Seized valves
• Damaged service connections
• Failed seals
• System alterations
• Heat pump replacement
• Heating upgrades
• Plant room refurbishment

First, confirm the existing pipe size.

Next, check the connection arrangement.

Finally, make sure the replacement valve suits the system’s pressure and temperature requirements.

Why Buy From Kudos Trading?

Kudos Trading supplies professional plumbing, heating and underfloor heating components throughout the UK.

We are also expanding our range of Air Source Heat Pump Parts & Spares.

Therefore, installers can source more heat pump servicing and replacement components from one supplier.

We have also supplied underfloor heating products to the UK for over 26 years.

Frequently Asked Questions

What Does a 22mm Fill & Flush Valve Do?

It provides convenient access for filling and flushing a heating circuit.

Therefore, installers can connect suitable service equipment without dismantling the system.

Can I Use This Valve on an Air Source Heat Pump?

Yes, where the system uses compatible 22mm pipework and operating conditions.

However, always follow the heat pump manufacturer’s hydraulic requirements.

Can I Use It with Underfloor Heating?

Yes.

The valve can provide a useful filling and flushing point on compatible water underfloor heating systems.

What Size Connections Does It Have?

This model uses 22mm compression connections.

Therefore, check the existing heating pipe size before ordering.

What Are the Side Connections Used For?

The service connections allow installers to attach suitable hoses.

They can then fill or flush the heating system during commissioning and maintenance.

Can I Add Cleaner Through the Valve?

The valve can provide access when adding suitable heating-system cleaners or treatments.

However, always follow the chemical manufacturer’s dosing instructions.

What Is the Maximum Operating Pressure?

The published maximum operating pressure for this valve type is 10 bar.

What Temperature Range Does It Cover?

The published operating temperature range is 2°C to 85°C.

Is This the Same as a Flow Balancing Valve?

No.

A standard fill and flush valve provides servicing access. A flow balancing valve also measures or controls circulating flow.

Related Products

• Heat Pump Flow Balancing Valves with Fill & Flush
• Microbubble Deaerator 22mm
• Low Loss Headers
• Bastion Magnetic Filter 22mm
• 22mm Magnetic Y Strainer
• 22mm Automatic Bypass Valve
• Fernox TF1 28mm Antifreeze Valve
• Air Source Heat Pump Parts & Spares

Next Working Day Delivery

We hold our products in stock across our UK warehouses, including our 7,000 sq ft Nottingham warehouse.

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.