£6.34 (excl. VAT) / £7.61 (incl. VAT) R-100-80
£6.34 (excl. VAT) / £7.61 (incl. VAT) R-125-100

Concentric Reducers for Ventilation Duct

  • A reducer is a fitting used in ventilation systems between two pipes of different diameters. Concentric reducers chance the diameter of a duct run to assist air flows.
  • All of our reducers are concentric, eccentric reducers are available on request.
  • Reducers up to 315mm diameter are pressed reducers, 355mm and above are fabricated reducers.
  • Reducers for spiral ducting are all male fittings and fit directly into circular spiral ducting (secure using recommended fixing methods).
  • For a male to male connection i.e reducer to spigot a Female coupler should be used.

What is the difference between a concentric & eccentric reducer?

  • A concentric reducer, is shaped like a cone and the centre line is directly in the middle of the two diameters.
  • An eccentric reducer has an edge that is parallel to the connecting pipe and creates an offset in the centre line of the ventilation duct run.