Febco

Basically, if you lose water pressure to your house, the water in the house will flow out to the mainline. Because pressure is now reversed, going from the house to the mainline, it creates a siphon effect and will pull anything in the sprinkler system and in the puddles around the sprinkler system with it. If your garden hose was on at the same time, it would become a siphon hose. After that, all the fertilizer, insecticide, animal waste, and many other things you don’t want are pulled into the drinking water. Your Febco backflow device will stop the polluted water from flowing back into your clean water supply.

Febco manufactures a variety of backflow preventers that fall into the main categories of backflow prevention. Febco’s Pressure Vacuum Breakers (PVB), Double Check Valve Assemblies (DCVA), and Reduced Pressure Zone (RPZ) Assemblies are all available at Sprinkler Warehouse.

If your backflow preventer continues dripping after the system shuts off or reduces water pressure, it’s important to address it quickly to protect your water supply. Shut off the water and inspect the device for obvious issues like debris, cracked fittings, or freeze damage. While Spreinkler Warehouse does offer Febco backflow preventer parts, make sure to only proceed with repairs if you know what you’re doing. Otherwise, contact a licensed backflow technician.

In case it's a broken poppet, you'll want to first shut off the water flow through the bottom valve, perpendicular to the pipe. Next, unscrew the plastic bonnet. Remove any plastic still inside. There should be no plastic in the device. Next, screw in the replacement bonnet. Remember to only hand-tighten. Finally, replace the bell on top and open the valves.