General Pipe Cleaners Datasheets for Backflow Preventers
Backflow preventers are assemblies consisting of two check valves and two shut off valves. These assemblies may also include test cocks for each chamber.
Backflow Preventers: Learn more
|Sewer Drain Check Valve -- Flood-Guard||Flood-Guard™ operates like a check valve to seal off water back-up caused by overloaded sewers. Water flows normally through the drain until the sewer begins to back up. Then the...|