Coastal and river outfall pipes can be partially or completely buried by sand, shingle and mud. These materials can be deposited in a single tide or change with river currents so planned clearance is of little value. Tideflex all rubber check valves are an excellent alternative to flap valves for these outfall applications.
The Forres (River Findhorn & Pilmuir) Flood Alleviation Scheme, completed in 2014, has to date prevented flooding of around 1000 properties at a saving of approx. £27 million. We are proud that our Tideflex valves form part of this important scheme.
*Updated and re-published 27 January 2016 Between 1995 & 2009, Clonmel Town suffered severe flooding on a regular basis from the River Suir and its tributaries. Tideflex valves made a crucial contribution to the design & construction of this important flood defence scheme, being installed where traditional flap valves posed a risk. The scheme, and the valves, performed admirably during the major floods over the 2015/2016 Christmas period, considered its first significant flood test.
Flap valves on the stormwater discharges to the tidal section of the Parrett River at Bridgwater were constantly blocked due to mud & silt. In 2013 Wessex Water decided that Tideflex duckbill valves would provide the solution, with their proven track record in being free draining and self-clearing. We have no doubt they will be happy with their choice for decades to come.
Twenty-two 900mm Tideflex check valves have been operating problem-free on the Tees Barrage Fish Pass since 1995. This is another example of how Tideflex duckbill valves can be used to solve complex or unusual problems faced in design.