Non-Return Valves and Rodent Valve

Fernco’s Non-Return Valves allow sewer or surface water materials to freely flow in the direction of the systems mains but block backflow of those materials in the opposite direction in instances, such as, flooding.
Unobtrusive to natural flow.
A proven flood prevention method.
Helps to protect homes, properties, commercial buildings, roads etc.
Also suitable as rodent deterrents with rat block features.
Maintenance free.
 
 
Introduction to Non-Return Valves (NRV)
Fernco’s range of retrofit Non-Return Valves (NRV’s) can be installed directly into existing manholes by simply pushing the NRV into the desired pipe inlet.
An effective prevention for backflow, the product stops foul water from blocked sewerage systems, averting potential flooding inside properties through toilets, plug holes, and waste pipes.
The Retrofit NRV’s effortless pushfit design means it can be fitted in minutes and does not require any specialist expertise or equipment.
Users also benefit from protection against rodent infestation. The stainless-steel reinforced flap helps to block rats and other rodents and insects from travelling up pipes and into homes and commercial buildings.