Double Check Valve: Reliable Backflow Prevention - double check valve
Have you ever woken up on a wintry morning and gone outside only to realize you’re standing or sloshing in water? You look to your left and all you is water spewing out of your backflow. It happens more often than you think and it’s a good indicator that the equipment was not properly winterized. In this article, we’ll discuss how to replace the bonnet and poppet of a Febco 765-1 PVB.
Thank you for watching our video on how to replace a bonnet and poppet on our FEBCO 765-1 model. For more information about preparing your backflow preventer from freezing temperatures watch the video Winterizing Your PVB and don’t forget to subscribe to our Youtube Channel.
The model in this example is the 765 and the manufacturer is Febco. The number behind the dash indicates the size of the particular PVB. The Febco poppet bonnet assembly kit used in this demonstration contains the bonnet, poppet, and some lubricant or grease to aid in the repair process.
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A Pressure Vacuum Breaker (PVB) is a type of backflow preventer. It allows the water from your supply to go through and flow into your valves which in turn, irrigates your lawn. However, if your device isn’t properly winterized water can get stuck. As we all know, when water freezes it expands and as a result of the expansion, this particular piece can actually fracture.