This Standard specifies requirements for field testing and maintenance of the following backflow prevention devices:
(a) Registered break tank (RBT).
(b) Registered air gap (RAG).
(c) Pressure-type vacuum-breaker (PVB).
(d) Spill resistant pressure vacuum-breaker (SPVB).
(e) Reduce-pressure-zone device (RPZD).
(f) Double check valve (DCV).
(g) Reduced-pressure-detector assembly (RPDA).
(h) Double check detector assembly (DCDA).
(i) Single check valve (testable) (SCVT).
(j) Single check detector assembly (testable) (SCDAT).
(k) Atmospheric vacuum breakers (AVB).
NOTE Single check valve and single check detector assembly [Items (i) and (j)] do not apply to New Zealand).