You searched for "sampling adapter"
Pipelife
Pipelife PP Masterfit reducer, 110 x 90 mm 117211
Part: 117211
Grey plastic reducing adapter to connect 110mm and 90mm drainage pipes.
Solydo/BT Nyloplast
Solydo/BT Nyloplast PP reducer SN8, 110 x 125 mm (grey) 116859
Part: 116859
Grey polypropylene reducer for connecting different-sized drainage pipes together.
Brandless
Brandless PP reducer SN8, 160 x 110 mm (grey) 116861
Part: 116861
Grey polypropylene reducer for connecting larger to smaller drainage pipes.
Solydo/BT Nyloplast
Solydo/BT Nyloplast PP reducer SN8, 160 x 125 mm (grey) 116860
Part: 116860
Grey plastic reducer, steps down from 160mm to 125mm for drainage pipes.
Pipelife
Pipelife PP Masterfit reducer, 50 x 40 mm 117201
Part: 117201
Grey plastic reducer for connecting thin-walled pipes of different diameters.
Pipelife
Pipelife PP Masterfit reducer, 110 x 75 mm 117209
Part: 117209
Grey plastic pipe reducer connecting 110mm to 75mm drainage pipes.
Pipelife
Pipelife PP Masterfit reducer, 110 x 50 mm 117207
Part: 117207
Grey plastic pipe reducer connecting 110mm to 50mm drainage pipes.
Pipelife
Pipelife PP Masterfit reducer, 110 x 40 mm 117205
Part: 117205
Grey plastic internal reducing ring to fit 110mm pipe into 40mm.
Pipelife
Pipelife PP Masterfit reducer, 90 x 50 mm 117203
Part: 117203
Grey plastic reducing ring for joining thin-wall drainage pipes.
Wavin
Wavin Rainwater drainage reducer rainwater/sewage, 75 x 60 mm 155142
Part: 155142
PVC rainwater to sewage reducer for integrating roof drainage with sewer systems.