Trappex
Heating-system protection developed from hands-on gas engineering experience, with practical products designed to protect systems from debris, trapped air and pressure problems.
Explore Trappex productsUK delivery £5.99 • Free over £100 • 2–4 working days
Trappex
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The Trappex Centramag 2 is a precision-engineered in-line magnetic filter designed to provide maximum protection for heating systems.
Its innovative design includes nine dirt separators, ensuring the effective capture of both magnetic and non-magnetic debris, preventing harmful particles from entering and damaging the boiler.
Ideal for residential and light commercial applications, the Centramag 2 offers unparalleled flexibility with multiple installation options, making it perfect for compact spaces.
This easy-to-install filter can be fitted within 60 seconds after draining and cutting the pipework, ensuring minimal disruption during maintenance. The bi-directional flow capability and triple-seal isolating valves provide enhanced reliability and system performance. Additionally, the air vent doubles as a dosing port for chemical inhibitors, simplifying system servicing and reducing time spent on-site.
The Centramag 2 is built with durability and ease of use in mind, making it an essential component for protecting heating systems against debris and ensuring long-lasting efficiency. Whether used in a new installation or as part of routine maintenance, it sets the standard for high-performance system filtration.

PRACTICAL IDEAS FROM OUR INDUSTRY
We’re proud to support useful innovations created by people who understand the trade. These are products chosen for the genuine problems they solve for engineers and their customers.
Heating-system protection developed from hands-on gas engineering experience, with practical products designed to protect systems from debris, trapped air and pressure problems.
Explore Trappex products →Invented by Birmingham electrician Neo Mosudisa after he encountered a real safe-isolation problem at work. One thoughtful idea, developed to help engineers work more safely.
Discover Spurlok →Created by Chris Jepp to make topping up sealed heating systems simpler and help prevent over-pressurising and unnecessary water waste.
UK inventor story — not currently stocked by TomKat