System Restorer and Cleaner for Commercial Heating and Closed Cooling Systems


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Sentinel X400


Sentinel X400 has been formulated for the effective cleaning of heating circuits and closed cooling systems where there is a significant build up of corrosion sludge.

Sentinel X400 lifts and disperses old corrosion debris. It is ideal for use where a new boiler or pump is to be fitted to an existing system, or where radiators have cold areas or are partly blocked due to sludge build up.

Sentinel X400 is a non-acid formulation that can be used in all types of indirect heating systems including those containing aluminium components.

Features & Benefits

  • Effectively removes radiator sludge
  • Helps restore circulation
  • Restores system effectiveness
  • Suitable for all metals including aluminium
  • Easy to handle
  • Neutral pH – no neutralisation procedure is needed
  • Manufactured under a quality system conforming to ISO9001

Physical Properties

  • Appearance: Yellow to brown liquid
  • Odour: Mild
  • Specific gravity: 1.02 (20°C)
  • pH: (concentrate): 7 (approx)
  • Freezing point: -1°C



20 litre containers


More Information

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The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The company shall not be held liable for any damage resulting from handling, contact, mis-use or mis-application of the above product. In all instances the user should satisfy themselves that this product is suitable for the anticipated application and should carry out suitable and sufficient risk/COSHH assessments and a method of use statement.

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