AG150-001 Gap-A-Flo

  • Model No. Gap-A-Flo: 21
  • Unit approximately 8″ long
  • Provides an in-line air gap, usually installed in the last 5 feet (1.5 meters) of the indirect drain piping and must be in the down leg of the drain line piping
  • Unit can be tilted at any angle (down as low as 45° angle) when installing if needed, (window opening on top side)
  • Molded clamp groove plus included “Jiffy Clip” enable easy vertical wall mounting
  • Unique design incorporates a rotatable splash guard/splatter shield, to eliminate splatter of water droplets out of either air gap opening
  • Multiple air gap openings far exceed the code mandated minimum of (1)¨ vertical
  • All noted threads are American NPT threads
  • Unit design lab tested at 15 gallons/minute (56.8 liters/minute)
  • Recommended usage up to 7 gallons/minute (26.5 liters/minute)
  • UPC® listed
  • Tested for compliance to IPC and NSF standards
  • Certification available for viewing and download here

SKU: AG150-001 Categories: , ,


“Gap-A-Flo” Inline Air Gap

Water Softener air gaps generally are installed near the laundry facilities in the garage, basement or in the laundry room for convenient access to the house drainage piping and secondly, there almost never exists a dedicated (unused) standpipe just waiting to be used by the installer for surmounting their drain line air gap. Thus the critical feature of the air gap is its ability to share a standpipe with the washing machine drain hose. Properly designed and installed, air gaps, like check valves, allow water to flow only in the desired direction. The key characteristics for an air gap is protection from back flow and back  siphonage. All units are dual listed by IPC and UPC©. Dual listing conveys generally this important message: countrywide as well as international acceptance.

Additional information

Weight 0.247 lbs


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Five essential things you need

to know about air gaps!

Download your free report! 

Thank you!