I have an old old (130 + yrs) house and in the basement the previous owners ran a 2inch straight pipe from the laundry tub straight down to a 4 inch hub as the drain and didn't seal it. the hub I suspect was the floor drain because it is actually a trap right under the floor. I expect this is good news because it keeps any sewer gas from coming back threw the line. the hub is actual the orange fired clay type. The problem i have is that the laundry water comes out to fast for the floor drain to move it and the corner of the basement floods to about 3/4 inch of water covering a square yard of the floor before it has a chance to drian off. The drain is in the floor about 12 inches from one wall and 30 inches from the other. It is not a bad corner for my laundry tub so What i want to know is if i can reduce the 4inch ID hub to match the 1 1/2 inch drain and trap for the laundry tub. AND . with the way that floor drains are done can it drain off the amount of water i have or will it drain too slow to put the laundry water thru it. If I can use this, how would i seal the 3inch or 4 inch reducer into the 4 inch hub?