Sump Pump Discharge

Proper sump pump discharge installation ensures effective water removal while protecting the pump from freeze and clog damage.

Why This Matters

Correct discharge installation prevents sump pump failure, basement flooding, and freeze damage while integrating seamlessly with the main drainage system.

Discharge Installation Overview

1

Start with 1.5" PVC from the house

Begin with the standard discharge pipe from the sump pump system.

  • The sump pump discharge typically exits the home using 1.5" PVC pipe
2

Install freeze-protection overflow adapter

Use a specialized adapter that provides critical freeze and clog protection for the system.

We use a specialized discharge adapter with horizontal slots. This part:

  • Transitions from 1.5" PVC to a 4" PVC elbow, which is compatible with our system
  • Connects to 4" dual-wall pipe using a Fernco fitting
  • Provides freeze/clog protection—if the main discharge line is blocked, the slots allow water to escape through a secondary path, preventing the sump pump from burning out
Sump pump discharge with freeze-protection adapter
3

Connect to main drainage line

Complete the installation by integrating with the larger drainage system.

  • This pipe should eventually connect into the larger drain system, usually tying into a main discharge line