Few backflow devices have as large a cloud of confusion hanging over them from engineers, inspectors and installers as chemical dispensers.
The operation of the device literally is shrouded, the installation is often done without inspection and there is a tube inserted into a cleaning solution at all times while connected to potable water. All of this can be very troubling at first glance. Let’s pick apart how these devices operate so they can be specified and installed with confidence to provide the proper protection.