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The award winning Mainline Fullport Valve provides automatic sewer backup protection, protecting the home and adding peace of mind for the owner.

  1. Automatic sewer backup protection for the life of the home
  2. Gate closes automatically when sewer starts to backup
  3. Clear Top for easy visual inspection
  4. Fullport (Normally-open) Non-Flow Restricting
  5. No problems with blockages
  6. Cleaning-rod does not destroy the gate when feeding or retrieving cable
  7. Normally-open design allows the free circulation of air throughout the plumbing system to the municipal sewer
  8. Built-in sewer clean-out for the home
  9. Award-winning technology