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    Fernox TF1 Sigma UB 22mm Under Boiler Magnetic Filter 62631

    Manufacturer: Fernox
    The Fernox TF1 Sigma UB Filter is a compact 22mm magnetic heating system filter designed for installation underneath boilers and in restricted spaces where a conventional in-line filter may not be suitable.

    The under-boiler design features a durable glass-reinforced engineering polymer filter body and a forged brass manifold, providing a robust solution for protecting heating systems from circulating corrosion debris, including magnetite.

    A powerful neodymium magnet captures ferrous contaminants from the system water, while the engineered flow path is designed to provide high collection efficiency without blocking or restricting flow. The integrated three-way valve allows the filter to be isolated and cleaned through the drain point without dismantling the filter.

    Designed to be installed horizontally on the return to the boiler, the TF1 Sigma UB is particularly useful where space is limited or pipework is concealed. Separate flexible or corrugated pipes and/or adapters may be required for some installations and are not supplied.
    SKU: 62631
    Availability: 47 in stock
    £172.89 incl tax
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    Key features



    • Fernox TF1 Sigma UB magnetic system filter

    • 22mm compression connections

    • Product code: 62631

    • 10-year warranty

    • Compact under-boiler design

    • Ideal for restricted installation spaces

    • Designed for concealed pipework installations

    • Horizontal installation on the boiler return

    • Powerful neodymium magnet

    • Captures circulating corrosion debris and magnetite

    • High collection efficiency

    • Designed not to block or restrict system flow

    • Integrated three-way isolation and cleaning valve

    • Easy servicing via the drain point

    • Can be used with Fernox chemical treatments and system additives

    • Suitable for water and inhibited glycol solutions

    • Maximum glycol concentration: 50%


    Technical specifications



    • Brand: Fernox

    • Product: TF1 Sigma UB Filter

    • Product code: 62631

    • Connection: 22mm compression

    • Filter body: Glass-reinforced engineering polymer

    • Manifold: Nickel-plated brass

    • Seals and washers: EPDM

    • Magnet: Neodymium

    • Maximum working pressure: 5 bar

    • Maximum flow rate: 40 L/min

    • Maximum working temperature: 100°C

    • Maximum glycol concentration: 50%

    • Capture rate: Up to 100% of system contaminants

    • Dimensions: 78 × 214 × 102mm

    • Weight: 0.93kg

    • EAN: 5014551626317

    • Warranty: 10 years

    Products specifications
    Manufacturer Fernox
    Product Type UB Filter
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