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There shall be provided dial spring pressure gauges in each sprinkler system on the riser above and below the alarm valve if so equipped, at the system main drain; at each main drain associated with a floor control valve; at the pressure tanks and in each independent pipe from the air supply to dry pipe systems.
Gauges shall be graduated from zero to a pressure approximately double the normal working pressure of the system to which they are connected. Pressure gauges shall have a connection to the sprinkler system not less than one-quarter inch. Each gauge connection shall be equipped with a shutoff valve and provision for draining.
(Prior code § 91-34; Amend Coun. J. 10-30-96, p. 31216, § 1)