Backflow preventers are assemblies with two check valves and two shut-off valves that prevent reverses in process flow. They may also include test cocks for each chamber within the assembly. Backflow ...

The check valve permits free flow in one direction and no (checked) flow in the opposite direction. This valve is specified in many applications because of its very low cracking pressure (typically ...

There is no way that our back flow valve would pass inspection. To replace it will cost us $1100. In addition, the BWW will require us to have the backflow valve inspected every year.