Water Softener Air Gap 1 1/2" - Fits 1 1/2" or 2" PVC Pipe THM High density polyethylene inner liner

High density polyethylene inner liner

Color changing resin lets you visually when it's time to change the resin

Tests included Hydro Static Testing at 300 psig and Cycle Testing of 100

Back siphonage happens when there is suction on the potable water line and air gap inlet that sucks non-potable water port back into the potable (drinking) water line

Performance is virtually unaffected by bicarbonates

Water Softener Air Gap 1 1/2" - Fits 1 1/2" or 2" PVC Pipe THM High density polyethylene inner linerCode Approved Air Gap for Water Softeners or Backwashing Filters Fits 1 1 2" or 2" PVC Pipe With 1 2" FPT Threads And Barbed Fitting For 5 8" OD Drain Tubing Air gap fittings are plumbing code required to mount in the drain line(waste line) of water treatment equipment and their primary purpose is to prevent non potable water from flowing backwards possibly mixing and contaminating potable (drinking) water. You might think of the function of an air