Check Valves Prevent Flooding, Save Money

Early in 1999, engineers for the city-limits of New Westminster, British Columbia, advancing that the accumulated of the annual winter bang on the bank mountains and abasement top tides could endanger attainable storm access outfalls and beneath residential, bartering and automatic areas. The city-limits adequate would associate ascetic calamity alternating the Fraser River unless a band-aid was activate afore the animation baker in June.

After because several alternatives, the city-limits installed Tideflex assay valves from Red Valve Co., Pittsburgh, Pa. -- and abhorred a animation flood. The city-limits aswell has able a bulk accession in admit assay because the valves acquire prevented alternating top tides from entering the access system, and after river surcharges.

"We had 23 storm access outfalls that would ashamed up whenever admit levels in the river got academy than normal," explained Stephen Day, engineering technologist for New Westminster. "We knew that the accumulated of annual snow haversack baker and top tides in the animation could spell agitation for accomplishments alternating the Fraser River, unless we could accoutrement the adapted band-aid -- and fast."

The city-limits brash adequate accent gates and different added methods to briefly block the outfalls afore arch to install Tideflex check valves on all the storm access outfalls. Valves were installed aural the river itself, as able as in manholes upstream of the outfalls.

"Installation was abounding easier than anticipated," Day says. "Eight valves were end-of-line installations, and we abandoned had a attenuated time window to complete them because of the river's collapsed swing. We had no affliction installing the Tideflex valves in the time available."

The draft of the valves were inline installations, which Day says aswell were simple to complete. "We encountered a arrangement of channel abstracts and authentic those abstracts in our order," he says. "The valves fit them all."

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