Chefwong
Member
We have the kind where the door is closed, and the flow of water *opens* the door. It's all CI - suppose code regulations.
I've seen the plastic ones - which might seem like it's a more superior design ?
I know it's not foolproof - I am mindful around late Aug/Sept to remove the cover and just to make sure nothing (is blocking) the door
Sewer systems just can't handle heavy rainloads or flash floods. Last time I recall was during Hurricane Irene:Sandy.
On this recent rainy event, every house or the mass majority on the block got overflow...
I've walked by some houses with trash bags, one has a hose running out through a window , etc.
Here'in lies the question. While I did get minor -backflow- , the door did hold the water from back flowing , I get that the door is not *100* sealed when it is closed and in thinking as such, I suppose the backflow water - pressure as the DMW backs up and fills up the pipe volume s what really (presses the door tight) to seal it.
For those familiar with these types of things, is what I am describing accurate, The door is not *sealed* enough to stop even minimal backflow and it does take *awhile* for the *pressure* of the full DWV backup up to seal the door -pressurewise*. The tub got filled up about 3/4 way full and just a small trace of water back flowed out of the bottom of the toilet ( 2 old t shirts was sufficient enough to soak this up)
I've seen the plastic ones - which might seem like it's a more superior design ?
I know it's not foolproof - I am mindful around late Aug/Sept to remove the cover and just to make sure nothing (is blocking) the door
Sewer systems just can't handle heavy rainloads or flash floods. Last time I recall was during Hurricane Irene:Sandy.
On this recent rainy event, every house or the mass majority on the block got overflow...
I've walked by some houses with trash bags, one has a hose running out through a window , etc.
Here'in lies the question. While I did get minor -backflow- , the door did hold the water from back flowing , I get that the door is not *100* sealed when it is closed and in thinking as such, I suppose the backflow water - pressure as the DMW backs up and fills up the pipe volume s what really (presses the door tight) to seal it.
For those familiar with these types of things, is what I am describing accurate, The door is not *sealed* enough to stop even minimal backflow and it does take *awhile* for the *pressure* of the full DWV backup up to seal the door -pressurewise*. The tub got filled up about 3/4 way full and just a small trace of water back flowed out of the bottom of the toilet ( 2 old t shirts was sufficient enough to soak this up)