Although the wastewater was being treated by a membrane bioreactor to a high standard, it was still necessary to provide an effluent diffuser at the outfall discharge point to ensure that seawater quality was not affected. MeasurIT was approached to provide a suitable Tideflex valve diffuser design. Conventional diffusers are prone to sediment and saltwater intrusion which reduces the hydraulic capacity and dilution efficiency of the effluent diffuser system. The Tideflex Diffuser Valves overcome these challenges with their rubber duckbill design.

Exposed to the high seas of Cardigan Bay, the pipeline is encased in a combination of precast concrete mattresses and in-situ concrete. The durable rubber design of the Tideflex check valves are especially up to the challenge of tough conditions as well. Now, whether the weather is fair or foul, beach goers and aquatic life are ensured that the water at Llangrannog will do no harm.