During extremely heavy rains my basement tends to flood, so I've installed some floor drains which run to a sump pit. This sump pit in turn has two pumps which run to a pvc pipe out to the street. Ideally, this would instead pump to the storm line, when the storm line isn't backed up that is. One thought was to run the sump pump pipe through a backflow valve to a T, and have the T connected on one side to a backflow valve, followed by a trap, and then into the storm line. The other side of the T would go up to the sidewalk.
My thoughts is that the water being pumped from the sump pump would naturally go to the storm as long as the storm wasn't backed up, and the backflow valves would prevent the storm from backing up into the house. I'm not even sure that I would need the backflow valve on the storm side if the trap and T were high enough off the ground. i.e. if the storm were backing up that high, I'm pretty screwed anyway.
I am going to hire a plumber to do the work, but the plumber who installed the drains and sump pit (yes he was licensed), didn't think to run anything to the storm line, so even when there is minor water in the basement, it all goes to the sidewalk instead of the storm drain. Just wanted to see if it was feasible before proposing the work.
PS - In the drawing I wrote "sewer" but I meant "storm" drain.
My thoughts is that the water being pumped from the sump pump would naturally go to the storm as long as the storm wasn't backed up, and the backflow valves would prevent the storm from backing up into the house. I'm not even sure that I would need the backflow valve on the storm side if the trap and T were high enough off the ground. i.e. if the storm were backing up that high, I'm pretty screwed anyway.
I am going to hire a plumber to do the work, but the plumber who installed the drains and sump pit (yes he was licensed), didn't think to run anything to the storm line, so even when there is minor water in the basement, it all goes to the sidewalk instead of the storm drain. Just wanted to see if it was feasible before proposing the work.
PS - In the drawing I wrote "sewer" but I meant "storm" drain.
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