Freeze Relief 3", White, for use Between 1.5" Sump Pump line and 3" Bell of SDR"Thin Wall" Sewer Pipe, Each;

Now for 3" Schedule 30! Freeze Relief is a revolutionary product that allows your sump pump to keep the water flowing even if the discharge line is clogged or frozen. Freeze Relief protects your basement and sump pump if the buried discharge line becomes clogged or frozen. This outdoor above grade in-line pipe vent allows water to escape, protecting the basement from flooding and the sump pump from burning out. Think of it as a Emergency Release for your pressurized sump pump water when the discharge line is blocked. Allowing you time to unblock the line before the basement floods or the pump burns out. Protects your home from flooding, even in the coldest of winters. FR3 accepts standard 1-1/2" Schedule 40 PVC line from sump pump and the bottom fits into a 3" thin wall bell or connector.