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).
