RD5REDUC – Rytons 150mm to 125mm Reducer (150mm/125mm Dia. Range)

General Details

RD5REDUC – Rytons 150mm to 125mm Reducer (150mm/125mm Dia. Range)

  • Reduces 150mm dia. ducting to fit 125mm dia. components.
  • 125mm dia. male spigot with 150mm dia. female collar.
  • 125mm spigot compatible with 125mm Dia. Rigid Pipe RD51RND and suits 125mm dia. RytHose range (or use RD5HC).
  • Use with adaptor RD5FR to connect to 204mm x 60mm Flat Channel Ducting.
  • Use RD6CONN to connect 150mm collar to 150mm dia. Rigid Pipe RD636RND.
  • For use in conjunction with cooker hoods and extraction fans with a maximum output of 750m³ per hour.
  • Suitable for working temperatures -20ºC to 60ºC.


  • Male spigot: 124mm Ext. Dia. x 23mm D.
  • Female collar: 150mm Int. Dia. x 23mm D.

Compatible Components:

  • Rytons Rigid Pipe 1m L RD51RND.
  • Rytons PVC 125mm Diameter RytHose Range.
  • Rytons Fire Resistant RytHose FAD510M.
  • Rytons Threaded Hose Connector Female RD5HC.
  • Rytons Flat Channel Horizontal Adaptor RD5FR.
  • Rytons Pipe/Hose Connector RD6CONN.

Static Pressure Drops in Pascals (Pa):

  • 15 l/s: 0.60.
  • 30 l/s: 2.20.
  • 60 l/s: 8.80.


  • High quality plastic.