Nicoll non-return outlet valve for non-sewage drainage pipe ends

PVC nose-type non-return valve available in seven diameters from 100 to 400 mm.

To be fitted at the end of drainage pipes carrying non-sewage water from retention basins, pond overflows, etc.

Valve with moulded hinge and nitrile rubber seal across the entire surface.

Prevents backflow, the entry of pests (rodents) and odour rising when in the closed position.