![]() ![]() Air gap is the simplest form of such a device. The most effective method to avoid this issue is by using a backflow prevention device. Even with this design there is always a risk of backflow, after which wastewater cannot properly find the right pipe and enters the fresh water supply line. ![]() In a plumbing system, potable water and wastewater are intended to flow through different pipes to avoid contamination. ![]() These need to be installed with a "p" trap to ensure no sewer gases enter the household.In simple terms, an air gap is the simplest backflow prevention method. These Air Gap Fittingsare plumbing code required whenever you hard plumb the drain line (waste line) of water treatment equipment to your household plumbing. Whenever there isn't a way to connect to a laundry sink or into a floor drain you can use an Air Gap Fitting and drain over head to plumbing from above the install location. My favourite is to run the drain into a drain stack just be sure to maintain the air gap. ![]() The next easiest way is to run the drain line to a floor drain as long as you have a way to secure the end point 1 1/2" above the grill. Make sure to not leak the stopper or anything else in the laundry sink. Plumbing your drain line into a laundry sink is probably the easiest and most convenient way, just secure the line 1 1/2" above the rim of the sink and you're done. In addition, the end of the drain line should be secured so that there is never any chance that it can become immersed in waste fluids or it can spray water into the surrounding area. By code Water Softeners must be emptied into a laundry sink, floor drain, sump hole or properly trapped special outlet, preserving an air gap of at least two times the diameter of the drain line, but in no case less than 1-1/2" above the top of the receptacle used. This is to prevent non-potable water from flowing backwards possibly mixing and contaminating potable (drinking) water. According to most plumbing codes a water softener drain line must not be connected directly to the household waste system. ![]()
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January 2023
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