Magnaclean System Cleaner, Black, 22 mm

Amazon

Rapid in-line installation providing exceptional central heating protection In-line installation - In just two minutes Versatile installation options Compact installation for tight spaces Low profile drain valve, easier servicing and dosing, Manufacturer: Adey

Plumbing Superstore

Compact, highly efficient magnetic filter removes up to 100% of suspended black iron oxide, to protect and restore central heating systems. Rapid-fit connectors for quick installation and faster servicing.. Adey Magnaclean Professional 2 Filter - 22mm