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A gravity tank used for a sprinkler system shall be supplied with water by a filling pump having a capacity such that the tank can be filled in less than eight hours.
The pressure tanks shall be supplied with water by a filling pump having a capacity such that the tank can be filled in not mom than four hours and with air by an air compressor having a capacity of not less than 20 cubic feet of free air per minute if of 7,500 gallon capacity or over and 16 cubic feet of free air per minim if under 7,500 gallon capacity. Where the sprinkler system is equipped with both gravity and pressure tanks, one filling pump may be provided for both. Any storage tank used for fire protection purposes when supplied from the city water system shall conform to the piping provisions governing fill lines and overflow pipes for storage tanks prescribed in Chapter 11-8 of this code.
(Prior code § 91-16; Amend Coun. J. 10-30-96, p. 31216, § 1)