ADEY Professional Heating Solutions



Central Heating System


Faster, stronger, simple

High performance MC4+ RAPIDE from ADEY, the makers of the market leading MagnaClean® filter, effectively seals small system leaks and weeping joints. Suitable for use in both sealed and open vented central heating systems, old and new.

  • High performance leak sealer
  • Seals small inaccessible leaks and weeping joints
  • Reduces pressure loss on sealed systems
  • Faster, stronger and easier dosing
  • Treats 125 litres
  • Avoids costly maintenance repairs
  • No blocked pumps, valves or air-vents

Product data

How to use

300ml of MC4+ RAPIDE treats up to 125 litres or 15 single panel radiators.

Introduce MC4+ RAPIDE to the system using the adaptor provided via the filling loop, radiator or through a MagnaClean filter air vent, and leave in the system.

Please note that this product is NOT for use in single feed indirect cylinders.

Physical and chemical properties

Appearance: Viscous Emulsion

Colour: White/Off-white

Odour: Slight

Solubility: Dispersible in water

pH (concentrated solution): 7.0

Density: 1.00 g/cm³


ADEY is a carbon neutral company and cares about the environment. MC4+ RAPIDE is classified as non-hazardous and while providing effective treatment is non-toxic and biodegradable.


EN 9001 & ISO 14001

Health & Safety

Caution: Pressurised container. Protect from sunlight and do not expose to temperature exceeding 50°C. Do not pierce or burn, even after use. Keep out of reach of children. Use only as directed.