1. Water Closets and Associated Flushing Mechanisms. The water consumption of water closets operated by flush tanks shall not exceed an average of 1.6 gallons per flush cycle over a range of test pressure from 20 to 80 psig. The fixture shall perform in accordance with the test requirements of the ANSI 122.19.2M, Vitreous China Plumbing Fixture Standard.
2. Urinals and Associated Flushing Mechanisms. Urinal water consumption shall not exceed 1.5 gallons per flush cycle over a range of test pressure from 20 to 80 psig. The fixtures shall perform in accordance with the test requirements of ANSI 122.19.2M.
3. Showerheads. Showerhead discharge rates shall not exceed 3.0 gallons of water per minute over a range of test pressure from 20 to 80 psig. The fixture shall perform in accordance with the test requirements of ANSI 122.18.1M.
4. Faucets. Sink and lavatory faucet discharge rates shall not exceed 3.0 gallons of water per minute over a range of test pressures from 20 to 80 psig. The fixture shall perform in accordance with the test requirements of ANSI 112.18.1M.
5. Pressure Reducing Valves. Where the service water pressure to a building is expected to exceed 60 psig, a water pressure reducing valve with strainer shall be installed just downstream of the building's main valve, so as to be accessible. The valve shall provide for pressure adjustment within the range of 50 to 60 psig. The valve shall conform to the requirements of Products Standard ASSE 1003. Exemptions to this subsection are service lines to sill cocks, outside hydrants and main and supply risers to buildings where pressure from mains does not exceed 60 psig at the fixture branches or at individual fixtures.
(Ord. 351, 5/6/1991, §2)