Installer benefits

  • Suitable for all heating systems 
  • High-performance leak sealer
  • Reduces pressure loss on sealed systems
  • No blocked pumps, valves or air vents
  • Quick-dose bottle for speedier injection – takes as little as 20 seconds
  • Versatile dosing options – via the radiator, air vent or boiler
  • Available in a 300ml bottle

Technical specifications

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

Environmental credentials

  • Non-hazardous
  • Non-toxic
  • Biodegradable 

Quality

  • ISO 9001 & ISO 14001

Dosage Instructions

How to use

With its quick-dose bottle, MC4+ Rapide can be added in just 20 seconds via a radiator, air vent or the boiler filling loop. However, we always recommend dosing via a MagnaClean® filter.

Do not use in single feed indirect cylinders. 

Technical
Data Sheet

Download

Safety
Data Sheet

Download

Homeowner benefits

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

MC4+ Rapide®

MC4+ Rapide isn’t just powerful – it’s fast too. The high concentration guarantees a strong seal. Because it flows around the entire system, it gets to work even in tough-to-reach places. And with its quick-dose bottle design, 20 seconds is all it takes to add it to the system.

How to Videos

Also available

MC4 is available in a 500ml and a 300ml bottle.

View product

THE LATEST

You AND your customer could win up to £1,500 this winter with ADEY MagnaClean®

Register MagnaClean® filter warranties this winter to be in with a chance to win back your heating bills!

Learn More

Helpful Tools

ADEY’s got some handy tools to help you protect your central heating system…

Product
Selector

Get straight to the products you need in a few clicks.

Find a
Rep

Discover who your local Business Support Manager is.

Need
Spares?

You can buy spares parts direct from us on our ADEY Spares site.

Help & Support

Click to view our Customer Support, Savings Calculator and FAQs

Tool

Product
Selector

Get straight to the products you need in a few clicks.

Tool

Find a 
Rep

Discover who your local Business Support Manager is.

Tool

Find a
Stockist

Enter your postcode to find your nearest merchant .