I would like to install a cleanout for my main drain line from my house to the city sewer system. There is no existing cleanout access for the main sewer drain line. House details: Huntington Beach, CA single-family tract house built 1960. Today I dug a hole to access the clay drain line. The drain line was appox. 3 feet below grade. I also found that a 45 degree wye exists approx. 2 feet from the foundation, which is plugged or capped. What materials will I need to connect a cleanout to my drain line? The wye is 7 1/2″OD and 6 1/4″ID. I plan to visit Home Depot and my local plumbing store tomorrow, but hopefully some pro plumbers on this site will chime in. Thanks in advance for the advice! Aaron Here are a couple pictures of my work: Clay drain pipe with plugged wye I dug in the hole in an existing planter between the foundation and the driveway pad. The drain pipe exits the house at the sprinkler riser to my right. Quoting AaronL: Here are a couple pictures of my work: Clay drain pi