§ 11.1-116. Protective devices for fire service systems.

(a)

Fire service systems having direct connections from the waterworks shall be provided with an air gap or a reduced pressure zone backflow preventer.

(b)

In systems such as those referred to in subsection (a) which have booster pumps installed in the connection from the waterworks, provision shall be made to avoid lowering the pressure at the connection below ten (10) psi.

(c)

Systems with direct connections to the waterworks, which are comparable to the systems described in subsections (a) and (b), must provide an air gap or a reduced pressure zone backflow preventer.

(d)

Systems having direct connections to the waterworks and interconnections to auxiliary supplies, such as pumps taking suction from raw water sources, exposed storage tanks, industrial water supplies, connections to unapproved ground waters, or to which antifreeze or other chemicals are added, or other applications as determined by the code official or director of utilities must be protected by an air gap or a reduced pressure zone backflow preventer.

(e)

Systems having direct connections to the waterworks from buildings having combined industrial and fire systems, either with or without storage tanks or pump connections, must provide an air gap or a reduced pressure zone backflow preventer.

(Ord. No. 40,553, § 1, 12-11-01; Ord. No. 43,836, § 1, 5-18-10)

(Ord. No. 40,553, § 1, 12-11-01; Ord. No. 43,836, § 1, 5-18-10)