When working with fluid applications such as plumbing, it is paramount that ample flow management is in place to ensure that all materials move exactly how they need to through a system. One undesirable issue that may be faced in a system is backflow, that of which is when materials begin to move in the opposite direction as a result of pressure changes. While this takes away from steady performance, the backflow of substances may also lead to clogging, excess pressure, and other issues like contamination. As such, one should always take advantage of components that prevent backflow, such as a backflow preventer or check valve. While both of these devices operate on the same principle, their overall objective differs, making it important that one understands their differences and distinct applications.