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Each system shall have a control valve, a system drain one-half inch or larger, and a test connection with valve on the system side of the control valve.
A pressure gauge and liquid level indicator shall be installed to indicate air pressure and water quantity in water supply pressure tanks.
Pipe or tube used in sprinkler systems shall be of materials specified in Section 15-16-370 of this Code.
Schedule ten steel pipe may be joined with mechanical groove couplings approved for service with grooves rolled on the pipe by an approved groove- rolling machine for branch lines only.
Fittings used in sprinkler systems shall be of materials specified in NFPA 13-2013.
Fittings shall be supported from structural members in accordance with Section 15-16-380 of this Code. Piping laid on open joist or rafters shall be secured to prevent lateral movement.
Listed residential sprinklers shall be used. The basis of such a listing shall be tests to establish the ability of the sprinklers to control residential fires under standardized fire test conditions. The standardized fire shall be based on a residential array of furnishings and finishes.
The sprinklers shall have fusing temperatures not less than 35 degrees Fahrenheit above maximum expected ambient temperature.
Joints for the connection of copper tubing may be soldered in accordance with ASTM B32-08 (2014), 95-5 or 50-50.
Operated, damaged or painted sprinklers shall be replaced with sprinklers having the same performance characteristics as original equipment.
Local waterflow alarms shall be provided on all sprinkler systems.
(Prior code § 91-134; Added Coun. J. 12-21-84, p. 12140; Amend Coun. J. 9-6-17, p. 55278, Art. VII, § 32)