ET112-001 1/4″ Quick Connect Push-In Inlet Reverse Osmosis Drain Line Adapter

  • Comes with all the fittings and instructions needed for installation
  • Resists clogging for life long, trouble-free operation
  • Eliminates gurgling noise from RO system
  • No drilling into wet pipes
  • UPC Listed, IPC and NSF tested, ASTM F 409 compliant


The ET112-001 is a reverse osmosis water filter drain line adapter. It is designed to connect discharge ¼-inch tubing from an RO filter to the drain. The ET112-001 is connected to the sink drainpipe to receive the reject water from an under-counter reverse osmosis appliance or a distillation system. The installation provides a reliable and trouble-free connection of the ¼-inch discharge water tubing to the drain line.
The ET112-001 is designed for residential and commercial use. The ET112-001 is the preferred way to connect RO system to the drain line. The ET112-001 eliminates gurgling sound and provides a safe and effective way to comply with all local plumbing codes.
The ET112-001 drain adapter is listed by UPC© and tested for compliance with IPC© and NSF© standards.