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A look inside a Watts 009 RP backflow assembly.

April 3, 2011

I am in the process of repairing this Watts 009M3QT Reduced Pressure Backflow Assembly for a dishwasher in a downtown Seattle restaurant.

The relief valve failed the 1st backflow test; I was able to exercise the RV to get it to pass the 2nd backflow test. However when I tested check valve #2 I found it leaked. At this point it was time to take this backflow prevention assembly apart and inspect and clean the internal parts in an attempt to get this backflow device to pass the 3rd test.

After the repairs this reduced pressure backflow assembly (RPBA) did pass the 3rd test.  Click to Enlarge

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