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A.R.I. DC-500 and DC-501, are Double Check Valves designed to provide maximum protection against backflow caused by back-siphonage or backpressure. Backflow may cause infiltration of chemicals, fertilizers and/or other pollutants into potable water systems. Comprised of two
independent, easily replaceable, capsulated spring-loaded check valves.
Size Unit
Connection size
Pressure rating
Working temperature
Working temperature range
0.5° C - 45° CMax intermittent temperature
60° CEnd connection type
Threaded NPT – ANSI B1.20.1
A.R.I. DC-500/501
A.R.I. DC-501 with shut-off valves
