Homeowner Benefits

  • A simple way to seal small inaccessible leaks and weeping joints
  • Helps avoid costly maintenance repairs

My installer tells me he always uses MagnaClean®. The amount of sludge collected was impressive. MagnaClean® is not only neat, it performs a fantastic job.

Mr D Cage, Highworth

Dosage Instructions

How to use

A 500 ml bottle will provide effective treatment for a typical 100litre/ten radiator system. For larger systems, use further MC4 as required. To introduce MC4 to the system, we recommend using the MagnaClean® canister to dose the system.

Alternatively, dose via a radiator or the F&E tank. For long-term system protection, use MC4 Silencer in conjunction with ADEY’s MC1 Protector. Do not use in single feed indirect cylinders.

Also available in 300ml.

Technical Specifications

Physical and chemical properties

  • Appearance: Viscous liquid
  • Colour: White/off-white
  • Odour: Slight
  • Solubility: Dispersible in water
  • pH (concentrated solution): 7.0
  • Relative Density: 1000 kg/cm³


  • Non-hazardous
  • Non-toxic
  • Biodegradable


  • EN 9001 & ISO 14001

Installer Benefits

  • High performance leak sealer
  • Reduces pressure loss on sealed systems
  • No blocked pumps, valves or air vents
  • Suitable for all heating systems
  • Can be dosed through the MagnaClean® filter
  • Available in 500ml
  • Subject to availability in certain countries

ADEY's Complete Chemical Range

ADEY’s award-winning range of chemicals keep heating systems running smooth and efficiently saving time and money

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MagnaClean TwinTech

Double powerful magnetic filtration

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Extra tough limescale protection for hard water

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Chemical water treatment is a critical part of effective maintenance.