I can't find a picture of the way I was talking about. I can't draw one because my version of Paint doesn't allow saving as an image.
If I can get the parts, I'll assemble an example for everyone.
The sewer Y is actually like a lower case "y" where the longest line in the y is vertical and the short line is 45 degrees upwards. That short part of the y is where you put the output. The cap goes on the top of the long part and you drill a 1/4" hole in it. The tail part of the y should be submerged.