The Weil-McLain Sentinel-X400 System Cleaner is a non-acidic treatment for radiators and pipework. The X-400 removes magnetite sludge build-up, eliminating cold spots and restoring full heat emission. The Sentinel-X400 is the ideal product when a new boiler or pump is to be fitted to an existing system.
Safe on all Metals
Setinel X400 is a non-acidic, non-caustic solvent that is safe on all metals including aluminum.
Restore Proper Heat Distribution
The X400 system restorer removes sludge build up and eliminates cold spots in the radiators.
Product NoteOne quart of X400 is needed to treat your standard residential system of 25 gallons. Larger systems should be dosed at 1% of system water.