(A) All backflow prevention assemblies shall be fully approved and listed as acceptable by the state as to manufacture, model, size, application, orientation and alterations. The installed assembly must have a status of passed determined by performance evaluations to suffice as an approved backflow prevention assembly. The method of installation of backflow prevention devices shall comply with installation criteria set forth by this chapter and the state. Installation shall be at the sole expense of the owner or occupant of the premises.
(B) The type of protective assembly required by this chapter shall depend on the degree of hazard that exists. Reduced pressure principle assemblies (and/or detector) may be used for health hazards and non-health hazards. Double check valve assemblies (and/or detector) may only be used for non-health hazards and is limited to Class 1-3 fire systems only.
(C) Pressure vacuum breakers, spill-resistant vacuum breakers and atmospheric vacuum breaker are not allowed for premise isolation and will not satisfy the requirements of this chapter for adequate backflow prevention due in part to the inability to protect against backpressure.
(Ord. 1297, passed 4-12-2011)