The 10 Best Backflow Preventers
This wiki has been updated 15 times since it was first published in October of 2018. There are two types of water in this world: the clear stuff that's delicious and safe to drink, and the other kind. With these backflow preventers, you won't have to worry about the latter mixing in with the good H20 in your home or RV, as they ensure that the water in the line only goes in one direction. We've included options suitable for both large and small installations. When users buy our independently chosen editorial recommendations, we may earn commissions to help fund the Wiki.
January 10, 2019:
There's a wide disparity in price points between some of the options on this list. That's due to the fact that certain models, like the Plumb Craft Waxman 7032000N, are ideal for things like garden hoses, while you'll need a larger and more formidable model for wide-scale irrigation and home use. We strove to cover all of our bases in terms of applications, which naturally led to diverse costs.