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The AG100-001 Universal Air Gap is designed to provide an effective way of connecting water softeners and water filters to 1-1/2" and 2" drain lines.

The AG100-001 features a single inlet port that connects 1/2" piping or 5/8" tubing from water softener or filter to drain line. The unique feature of this air gap is being able to accommodate 1-1/2” and 2” standpipe drains with ease. In addition, a special design of this air gap enables installation of multiple air gaps into the same drain connection. Up to 3 AG100-001s can be installed into the same drainpipe to provide total of six simultaneous water discharge connections.

The AG100-001 uses a special plastic material that minimizes mold growth and provides a strong connection between piping, tubing and drain line.

The AG100-001 air gap drain adapter is listed by UPC® and tested for compliance with IPC® and NSF® standards.

  • 1/2" OD inlet port for 1/2" PVC
  • 5/8-inch ID inlet port for polyethylene tubing
  • Installs in both 1-1/2" and 2" standpipes
  • Standpipes can accommodate up to 3 units at a time
  • Legal to install in any state, UPC Listed, IPC and NSF tested
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Manuals (1)
Product Type:

Air Gap


Water Softener

Inlet Type:

1/2" OD

5/8" OD

Outlet Type:

1-1/2" to 2" Standpipe Drain

Width (Inches):


Height (Inches):







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