Non-return valves for critical reservoir repair
In 2019 a Derbyshire town was faced with a severe flood warning that posed a threat to life and major structural damage.
A 300-million-gallon reservoir upstream from the town was at risk of bursting due to two consecutive storms and the intense rainfall they brought with them (ICE). This led to damage and erosion of the reservoir’s auxiliary spillway and prompted fear of a damn breach.
Over 1500 people were evacuated from the town in a huge emergency effort (BBC News) while a stream diversion and pumping works were implemented to drain the reservoir in order for repair works to begin.
Nearly three years later, in 2022, the monumental repair effort began with a predicted completion date of late 2024, with T-T Flow being called upon to supply essential flap valves to the project.
T-T’s engineers worked to stringent end-user specifications to assemble, configure and function test flap valves within the works schedule.
The supplied flap valves were chosen for their industry-proven design, featuring a maximum seating pressure of 6m water column for reliable backflow prevention.
Consistent sealing performance is further guaranteed by the valves’ durable elastomeric seat, flexible double hinge profile and corrosion-resistant stainless-steel hinge and anti-tamper pins.
Their ductile iron body offers an excellent strength-to-weight ratio, while a robust fusion-bonded epoxy coating provides corrosion resistance for uncompromised long-term operation, which is essential due to the critical nature of the repair works.
