Thank you for this quick response.
Here is more background:-
The building is an old high rise. They have the experience that the sudden surge of washer discharge causes water to back up on the first floor, suds as high as second. So, they bought washers for community use that discharge into a...
I am planning to custom build a water tank into which a household washer should discharge it's used water. I have estimated that a tank holding 60 ltrs would be sufficient. This quantity should be released into the building's drainage system within about an hour because the system is old and has...