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Section 38-170. Required hazard and backflow prevention devices generally. '~ <br /> <br /> The cross-connection hazard and backflow prevention devices required shall be as set fortb in <br />the following chart: <br /> <br />TYPE OF CONNECTION <br /> <br /> TYPE OF DEVICE TO BE USED <br />I 2 3 4 5 <br /> <br />(a) <br /> <br />(b) <br /> <br /> Double Reduced <br /> Nonpressure Pressure Check Pressure <br />Air Vacuum Vacuum Valve Backflow <br />Gap Breakem Breaker Assembly Prevention <br /> <br />Direct water connections, subject to <br />backpressure from: <br />(1) Pumps, tanks and lines containing: <br /> a. Sewage substances <br /> b. Toxic substances <br /> c. Nontoxic substances <br />(2) Steam lines and steam boilers: <br /> a. Boiler or steam connection to <br /> tOXiC substances <br /> b. Boiler or steam connection to <br /> nontoxic substances (boiler blow <br /> off or drains no= connected <br /> directly to sewer) <br /> <br />Inlet-type water connections not subject <br />to backpressure: <br /> <br />X <br /> <br />X <br /> <br />X X <br /> <br /> (1) Waste line [not subject to backpressure <br /> due to waste line stoppages) X X X <br /> (2} Low inlet to receptacles containing <br /> toxic substances X X <br /> (3) Low inlet to receptacles containing <br /> nontoxic substances X X X X <br /> (4) Low inlet into domestic water tanks NO PROTECTION P~EQUINND <br /> (5) Lawn sprinkler systems X X <br /> (6) Coils or jackets used as heat ex- <br /> changes in compressors, degreasers <br /> or other equipment: <br /> a. In toxic substances X X <br /> b. In nontoxic substances X x X <br /> <br /> (7) Flush valve toilets <br /> X <br /> (8) Toilet and urinal tanks <br />(9) Trough urinals X <br />(10) Valved outlets or fixtures with <br /> hose attachments which may <br /> constitute a cross-connection: <br /> a. Toxic substances X X <br /> b. Nontoxic substances X x <br /> <br />X <br />X <br /> <br />X X <br />X X X <br /> <br /> <br />