San Francisco Building Inspection Commission Codes § 603.0 C

603.1 Add a third paragraph to this section as follows:

Structures with alternate water piping shall have a Reduced-Pressure Principle Backflow Prevention Assembly installed on the domestic supply as close as practical to the meter.

603.2 Revise Table 603.2 as follows:

Add a footnote for the Applicable Standards heading that states:

All backflow prevention assemblies or devices that are testable must have passed laboratory and field evaluation tests performed by a recognized testing organization.

Revise the tenth entry in the Table to read as follows:

<!Text read from an image; its layout may differ:
> Backflow preventer ASSE 1022 X [ ← ] X [ ← ] Installation includes
for Carbonated The arrow The arrow carbonated beverage
Beverage Dispensers represents the represents the machines or
(two independent location of location of dispensers. These
check valves with a language that language that devices operate under
vent to the has been has been intermittent or
atmosphere) deleted by deleted by continuous pressure
San Francisco San Francisco conditions. This
from the from the device is only
applicable applicable permitted in systems
California California with no upstream
Code. Code. copper pipe.
-- -- Otherwise, a reduced
pressure principle
backflow prevention
assembly is required.
<!>

603.5.6.4 Add the following section:

603.5.6.4 Approval. All such installations shall be approved in writing by the San Francisco Water Department prior to installation.

603.5.12 Revise section as follows:

603.5.12 Beverage Dispensers. Potable water supply to beverage dispensers, carbonated beverage dispensers, or coffee machines shall be protected by an air gap, a reduced pressure principle backflow prevention assembly, or a vented backflow preventer that complies with ASSE 1022, except that a vented backflow preventer may not be used to protect carbonated beverage dispensers in systems with upstream copper pipe. For carbonated beverage dispensers, piping material installed downstream of the backflow preventer shall not be affected by carbon dioxide gas. [ ← ] The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.

603.5.23 Add the following section:

603.5.23 Industrial Water Chillers. Potable water connections to closed-loop industrial water chillers shall be protected from backflow by a reduced pressure principle backflow prevention assembly in accordance with Table 603.2.