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Reduced Pressure Backflow Assemblies

April 19, 2013
Wilkins 975XL RPBA installed below ground on an irrigation system

Wilkins 975XL RPBA installed below ground on an irrigation system

This is an improper installation of a Wilkins 975XL RPBA installed below ground on an irrigation system. This is not allowed because if check valve #1 should fail the relief valve will vent filling the box and covering the backflow prevention assembly with water creating an unprotected indirect cross connection.

Upon completion of testing the backflow preventer you must check (Improper Installation) and note it in the remarks.

Click to enlarge

from → Backflow Testing
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