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How to Plumb an Ejector Pump

The plumbing system in your home relies on gravity to help move waste material out and, to some extent, to pull incoming water in. However, if a toilet in your house is located below the public sewer line, gravity will not force the waste into the sewer. Therefore, an ejector pump must be installed to pump the waste up to the sewer line. An ejector pump has a float switch that automatically turns on the device when the water level rises above a certain point.

Things You'll Need

  • PVC pipe
  • hacksaw
  • Teflon tape
  • Purple PVC cleaner
  • PVC glue/cement
  • Dry cloth
  • PVC adapters
  • PVC elbows
  • Pipe wrench
  • Shutoff valve
  • Check valve
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Instructions

    • 1

      Place the ejector pump on the floor, then measure the distance from the bottom of the pump to the top. Record the measurement. Cut a length of PVC pipe using the recorded measurement. This length of PVC will serve as the discharge pipe.

    • 2

      Glue a threaded adapter to the bottom of the PVC pipe: Wipe any dust or dirt from the bottom of the PVC pipe and the threaded adapter with the cloth, then apply purple PVC cleaner to the outside of the pipe and the inside of the adapter. Wait for the cleaner to dry, then apply glue to the pipe and adapter and connect the two pieces. Twist the two parts where they connect to ensure a good seal, and wipe any excess glue off.

    • 3

      Wrap Teflon tape around the threads of the adapter on the discharge pipe, then screw the pipe into the ejector pump's outlet port.

    • 4

      Lift the pump up by the discharge pipe and lower it into the ejector pit. Situate the pump so that the switch float does not touch the side of the pit.

    • 5

      Line up the main house line and the pump's discharge pipe, then place the ejector pit's cover over the discharge pipe and lower it. Pull all electrical cords through the appropriate hole in the cover and completely lower the cover.

    • 6

      Apply purple cleaner and then glue to both ends of the shutoff valve and the check valve. Connect one end of the check valve to the shutoff valve and the other end to the discharge pipe. Connect the other end of the shutoff valve to the main house line. Attach clamps at both ends of the check valve to help keep it in place.

    • 7

      Insert the vent pipe into the vent opening at the top of the ejector pit cover. Connect it to the main plumbing vent of the house with an adapter or PVC elbow if it is not already connected.

    • 8

      Tighten the screws or bolts on the ejector pit cover to secure it, then plug the pump's electrical cords into the electrical outlets.