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Welcome to Johnson Magnetic Filters - Specialists in Central Heating Protection

The Johnson Pipefilter Pro-Series range are the smartest and most reliable high performance heating system filters on the market. They are perfectly designed for installations where space is at a minimum, or the customer simply prefers the smarter appearance and excellent reliability. They protect and increase the energy efficiency of a domestic central heating system by capturing and removing the circulating steel dirt ie. black sludge (magnetite). 

The simple non plastic design has been chosen to provide the best long term performance, whilst providing the customer and installer with ultimate reliability, longevity, maximum peace of mind and brilliant value for money. Copper and brass are renowned to be the finest and most trusted plumbing materials, no compromise has been made with our choice of materials and build quality. 

Our magnets feature a large surface area and therefore provide high performance sludge removal. They are a more slimline alternative to jar derived filters, and are the perfect solution for installations in confined spaces and restriced areas. For greater flow rates several filters can be coupled together in a paralell combination to form a fork shape to divide the flow.

Features and Benefits

  • Fits vertically and horizontally
  • No cross threading, “O” ring worries, leaks or future call back problems
  • Copper and brass construction. Trusted, reliable, Altecnic butterfly ball valves
  • Solid brass threaded fittings
  • Premium quality copper and brass body
  • Stainless steel large magnetic element, full of neodymium magnets
  • Large magnetic surface area for maximum volume dirt capture
  • Higher temperature magnets, can be fitted in the flow/ return pipework
  • Brass drain valve
  • Reliable Grundfos type EDPM rubber washers
  • The Smartest choice
  • Maximum reliability, no plastic
  • Safer, maintains electrical earth continuity
  • Versatile, fits in the flow or return pipework
  • More than twice the lifespan of a plastic filter
  • 10 year guarantee
  • Large surface area, maximum debris capture
  • The best “value for money” heating filter
  • Made from the finest plumbing materials
  • Fits vertically and horizontally
  1. 120B Model

    22mm x 275mm Black x 42mm Pipe

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  2. 120W Model

    22mm x 275mm White x 42mm Pipe

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  3. 220B Model

    22mm x 375mm Black x 42mm Pipe

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  4. 220W Model

    22mm x 375mm White x 42mm Pipe

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  5. Half Loaded Magnet

    220B - 22mm x 375mm x 42mm Pipe