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All piping shall be provided with drains. Each riser shall be provided with a drain valve not less than two inches in size at the lowest point on the system side of the riser control valve. A valve used for a hose connection may be used to drain a standpipe riser when it is located at the low point of a riser. Drains shall discharge at a point where a floor drain or other adequate means exist to allow safe discharge and removal of water drained from the system.
Drain valves shall be identified by a durable sign indicating the floors or zone served.
(Prior code § 91-69; Amend Coun. J. 10-30-96, p. 31261, § 1)