“Detector check valve” as used in this chapter means a valve and meter combination intended to detect leakage or the taking of water from fire service connections to public water supplies and to register low rates of flow therethrough. Detector check valves shall be constructed as set forth in the following sections of this chapter. [Ord. 962 Art. IV, § 32, 1959; Code 1970 § 13.28.020; Code 1954 § 4-3.62.]