Check valves contribute to sustainable flood mitigation design

This case study originally appeared in the September 2021 issue of SWS, “Check Valves Contribute to Sustainable Flood Mitigation Design”
The Ballygawley River flows next to St Ciaran High School in County Tyrone, Northern Ireland. In 2008 and 2011, several flood events occurred during heavy rains, which severely affected houses along the river.
A lot of work was authorized to significantly reduce the risk of flooding at three locations along the river. This disaster mitigation effort provided flood protection for a large secondary school (800 students), a nursery, a church auditorium, a commercial car garage, and seven residential properties. In the process, various climate change scenarios were simulated and incorporated into the final plan.
In the end, the design team chose to install a 900 mm CheckMate in-line check valve manufactured by Red Valve Co. of Pittsburgh, Pennsylvania, as a key component of the flood prevention plan because it has a sustainable drainage control function compared to the pump. system. The sustainable flood mitigation plan using CheckMate and Tideflex valves is a low-cost solution for municipalities to address flooding caused by increased surface water runoff due to the expansion of residential areas.
The design, detailed design and on-site service of CheckMate online check valves are provided by Measurit, who has been a sales/engineering representative of Red Valve Co. since 1990, responsible for the installation of hundreds of CheckMate and Tideflex valves throughout Ireland and the United Kingdom.
The passive design of the CheckMate valve enables it to reliably and effectively seal even in mud, sludge and debris, without the need for power or generator backup systems. Because the CheckMate valve does not require external energy to operate, significant cost savings can be achieved. In addition, CheckMate valves are not affected by long-term infrequent use. The hydraulic power of the flood is captured by the valve, which is powered by the continuous accumulation of mud, silt and rocks, and works perfectly at the same time.
In addition to installing the CheckMate valve at the main drain, the additional work of the flood prevention plan includes:
The project was completed on time and on budget, and continued to provide sustainable value to the community.
The Rainwater Solutions staff invites industry professionals to nominate the most outstanding and innovative water and wastewater projects they consider to be recognized in the annual reference guide question. All projects must be in the design or construction stage within the past 18 months.
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