Non return valve

Non return valve

Non return valve : the guarantee to stop incoming odors !

Nicoll has completed its sanitation range with the development of a new non return valve. Whether removing wastewater or rainwater, this valve automatically stops any accidental discharge from the mains into the house.


Technical characteristics:

  • Locking mechanism
  • 2 non return valve in inox
  • Shut off knob
  • bi-injected lip seal
  • n arrow indicating the direction of flow


To cater for all projects, the valve is available :

  • in 4 different diameters: 100 - 110 - 125 et 160
  • as well as in male/female configuration for easy installation in new or renovated set-ups




  • Not susceptible to corrosion: not contain any screws or metal parts
  • Footprint reduced
  • Only a slight difference in channel: 7 mm for the 100 and 110 diameters
  • Light et resistant
  • Easy to access