Need to connect sewer pump to main waste pipe

13 years ago

I live in a ranch and I am putting a full bathroom into the basement. My main waste pipe comes down through the ceiling into the basement, right to the floor (about 7 in. above floor). It then curves 90 degrees and goes out through the back wall to the septic. I am building the bathroom very close to the main. The plan is to install a sewer pump into the floor next to the main pipe. I need to tap into the main to get the waste out. I want to attach a Y pipe/insert to the existing floor level clean-out on my cast-iron main so I can pump waste up and out of the pump and down into the main pipe and out to septic - while adding a new clean-out on the end of the Y. Can I do this technically and code-wise? I want to avoid cutting into the main.

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Comments (4)

lthurtle
13 years ago
So the sewer ejector pump will pump into the 2" wye that you want to install on the existing clean out? And you'll put a new clean out behind that?

The existing clean out is at floor level? How close is the pump to the stack?

Are there issues with pumping into a horizontal pipe?

Got any pics?
teacherfixer1
Original Author
13 years ago
Yes, to all of your questions above.

The pump is right next to stack.

Not sure on the horizontal pipe question.

Got any pics? YES. I HAVE A PIC OF THE STACK AND CLEAN-OUT. HOW DO I GET THEM TO YOU?
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brickeyee
13 years ago
Depending on what code you are under the pump pit may require its own vent all the way to clear air.
lazypup
13 years ago
Yes you may do as you plan, however, when you attach the new wye the side opening of the wye must be on to, in the vertical position and the discharge line from your pump must rise to an elevation above the gravity drain and discharge into the top of the gravity drain.

The discharge line from the pump must have union to permit removing the pump for maintenance, and you must have a backflow preventer and a manual gate valve above the backflow preventer.

The pump enclosure Must Have a dedicated vent to the roof. This vent may not be combined with any other vents in the structure.

You must also maintain the required clearance from the cleanout opening to any wall, fixture or appurtenance to permit operating a drain cleaning machine.