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 ...

They are classified as one-way directional valves. Check valves are commonly found protecting pumps in liquid applications or compressors in gas systems where backflow could cause the pump or ...

Broussard Services (615-988-6030) has announced backflow prevention device inspections as part of its residential and ...