Backflow Prevention Large Diameter Storm Sewer

[rhealing]

Need information on available backwater valves for 15" RCP storm water drain that runs into tidal canal. Also appreciate advice on where to install valve -- outlet? in-line? 15" RCP line pitches approx. 4"/100ft. x 300ft total run.

 

[cvg]

how about a waterman flapgate?

http://www.watermanusa.com/productdetails.asp?product=107

 

[bltseattle]

.... or tideflex

http://www.tideflex.com

 

[rhealing]

Good advice -- Thanks! Local engineer is proposing Tideflex TF-1; and that will work at the outlet into the tidal canal.

 

[TerryScan]

We have implemented Tideflex valves in a number of our projects. In our local, flap valves tend to get obstructed with debris and fail to close.