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Calmag Calflush Central Heating Flushing Unit.
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Calmag Calflush Central Heating Flushing Unit.

Our Price:  £620.00
List Price:  £745.00
Saving Of:  £125.00 (17%)
(Inc. 20% VAT)

Code:  Calflush
Brand:  Calmag


Calmag Calflush Central Heating PowerFlushing Unit

Complete with 3m hose

Product Code for your reference is:~ Calflush


CalFlush is a powerful cleaning system designed to remove deposits in central heating systems. Effective flushing can be achieved with minimal disruption.

Central heating systems can gradually build up a combination of scale, sludge and corrosion by-products within the boiler, pipework and radiators.  This manifests itself as cold spots on raditors, failure to pump to the furthest radiators, and noise in the boiler.

Central heating systems also need to be flushed prior to filling with preservative in order to remove flux and other deposits before commissioning for the first time (BS7593:1992).

It can often be time consuming or impractical to remove radiators for cleaning out severe blockages.  Even when they are removed, the only flushing capability usually available is with cold water from a hose at mains pressures and flows.  This will not loosen or remove sludge which has bonded to the inside of radiators or the remainder of the heating system.

The Calmag CalFlush Flushing System is the culmination of many years experience of the use of Calmag Heating System treatment chemicals with high flow, low pressure cleaning sets.

The opening at the top of the tank allows for chemical cleaners, such as the CalFlush Powerflush Pack, to be added easily. Furthermore, flushing quality can be visually monitored by checking the water returning to the tank or drain. When the system is in operation, dirty water can be sent to the drain while continually refilling with fresh water.

The unit is compact in design for ease of movement. It has also been ergonomically designed with a large diameter handle so that it can be picked up easily when empty.


Click the link below to view the manual (requires to run an add on as it is a pdf file)

Calflush User Manual







Weight Empty

11 kg
Weight Working 26 kg
Power supply 240v 50 Hz Single Phase
Full load current 4.4 Amps
Locked rotor current 16.5 Amps
Input power watts 940
Fuse rating 13 Amps
Cable length 2 metres
Carrying Strap Filling FunnelSupplied
Power connection 13 Amp plug
Motor insulation IP54 Class F
Inlet Connection 1/2" (12mm) Flexible hose
Drain Connection 1/2" (12mm) Flexible hose
Recirculation connections 3/4" (19mm) Flexible hose
Max inlet pressure 75 psi (5 bar)
Max drain pressure 20 psi (1.3 bar) 
Max recirculation pressure  20 psi (1.3 bar)
Working recirculation pressure 15 psi (1.0 bar) 
Max inlet flow at 5 bar 30 lpm 
Max drain flow  35 lpm
Max recirculation flow 50 lpm
Typical working recirculation flow   91 lpm
Max temperature recirculating liquid  65 ºC


If you need any further advice on this contact us with details below, thank you. 

The RRP on these items is £745.00 

Our Price is now only £614.00

If you wish to contact us you can via various ways please

  • Call on 01634 712816  (Plumbing Counter/ Showroom)  
  • Call on 0208 144 3733 (Direct Line)
  • Email us at

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