Reduced Pressure Zone Test Calculator

Analyzes RPZ backflow preventer test results and determines pass/fail per ASSE 1013.

Check valve #1 tightness.
psid
Should open 2 psi below inlet.
psid
Minimum 1 psi differential.
psid
Must discharge during test 2.

Results

Test 1 Result (Check #1)-
Test 2 Result (Relief Valve)-
Test 3 Result (Check #2)-
Overall Test Result-
References: ASSE 1013, USC FCCCHR, Backflow Prevention Manual