• Restores circulation to part blocked radiators.
• Can be used in all systems.
• Prepares existing systems for the installation of new pumps.
• Does not cause pin-holing or leaks.
• Reduced product volume in an easy to handle cartridge pack.
• 1 small cartridge pack treats a typical system containing 100L system water.
• Simple, rapid application to open or closed systems via a radiator feed valve or filling loop.
• The perfect solution in systems where conventional liquid products are difficult to apply.
• interactive sentinel problem solver 

Sentinel X400 has been formulated for the effective cleaning of existing central heating systems where there is a significant amount of corrosion debris.

Sentinel X400 disperses old corrosion products. It is ideal for use where a new boiler or pump is to be fited 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 which can be used in all types of direct heating systems including those containing aluminium components.