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Fernox TF1 Sigma UB Filter 22mm

by Fernox
Original price £61.94 - Original price £61.94
Original price
£61.94
£61.94 - £61.94
Current price £61.94

Fernox TF1 Sigma UB 22mm under-boiler system filter, code 62631. Confirm the exact boiler, connections and available installation and servicing space with your installer before ordering.

  • Designed for horizontal under-boiler installation. Boiler compatibility and adapter requirements depend on the exact model and pipe arrangement.
  • Separate flexible/corrugated pipes or adapters may be required; these are not supplied with the filter.
  • Fernox lists water, inhibited glycol solutions up to 50%, and its heating-system chemicals/additives as suitable fluids, subject to the filter and system requirements.
🚚 Next-day delivery on orders placed before 3pm Mon–Fri
📍 Same-day click & collect — 24 Western Avenue, Acton W3 7TZ (Mon–Fri 7:30am–5:30pm · Sat 8am–1pm)
🚚 Free delivery on orders over £50

Product details and fit checks

  • Manufacturer reference: 62631; 22mm compression version.
  • Filter body: glass-filled engineering polymer.
  • Manifold: nickel-plated forged brass, with an integrated three-way valve.
  • Magnet: neodymium.
  • Seals and washers: EPDM.
  • Manufacturer warranty: 10 years; check the applicable terms and registration requirements.

Check the dimension drawing before purchase. The manufacturer's single-unit logistics dimensions and its dimension drawing must not be treated as interchangeable installation or servicing clearances. Confirm the actual supplied revision, connection positions, required accessories and clear space against the current instructions and the job.

Use the Fernox TF1 Sigma UB product information and technical documents for the exact application, operating limits and maintenance requirements. A filter does not guarantee system performance or service life. Confirm supplied contents where these affect the installation.

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