Adey MC4+ Rapide Internal Leak Sealer, 300ml

Adey MC4+ Rapide is a 300ml internal leak sealer for heating systems. It reduces pressure loss on sealed systems without blocking pumps, valves or air vents, and the quick-dose bottle injects in as little as 20 seconds.

Central heating leak sealer features

• Suitable for all heating systems
• High-performance sealer
• Reduces pressure loss on sealed systems
• Does not block pumps, valves or air vents
• Quick-dose bottle, as little as 20 seconds
• Dose via radiator, air vent or boiler

Specifications

When to use Adey MC4

If a sealed system keeps losing pressure through small internal weeps, a treatment like this is a common first step. Signs of boiler pressure loss can have other causes, so ask a Gas Safe engineer if the boiler needs attention.

How to use

1. Read the instructions on the bottle.
2. Choose a dosing point: radiator, air vent or boiler.
3. Inject the 300ml dose.
4. Repressurise the system as instructed and monitor the gauge.

FAQs

How long does it take to dose?

The quick-dose bottle can inject in as little as 20 seconds.

Will it block my pump?

No, it does not block pumps, valves or air vents.