Nicoll non-return valves are positioned on the drainage network (waste or rainwater) and are used to prevent any accidental backflow from the public network to the home.
Benefits:
- Strong and light, made of injected PVC.
- Anti-corrosion: no screws or metal elements sensitive to oxidation.
- Removable stainless steel valve.
- Small footprint
- Available in M/F for easier installation in new and refurbished buildings.
- Small difference in water level.
- Type 1.