This RPZD valve test and Form 9 checklist guides technicians through backflow prevention testing. It covers flushing strainers, connecting test kit hoses to taps 1, 2, and 3, operating test kit valves A, B, and C, and diagnosing isolating valve leaks by observing gauge rise or drop. Steps include testing the upstream check valve with minimum 35 kPa, verifying relief valve opening pressure not below 14 kPa, and checking downstream valve for continuous discharge. Record readings, repair or replace faulty components, and restore the device to service. Generate a clear report for compliance and plumbing safety.
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