Customers having boilers or pressure vessels receiving a supply of water from the Utility Commission must have a check valve on the water supply line and a vacuum valve on the steam line to prevent collapse in case water supply from the Utility Commission is discontinued or interrupted for any reason, with or without notice.
(Ord. 4-83, passed 3-7-1983; Ord. 21-2004, passed 12-20-2004) Penalty, see § 10.99