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DOUBLE DETECTOR CHECK VALVE ASSEMBLY (DDC).

Fort Worth City Code § 12.5-557
in effect
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§ 12.5-557 DOUBLE DETECTOR CHECK VALVE ASSEMBLY (DDC). Double detector check valve assemblies may be utilized in all installations requiring a double check valve assembly and detector metering. DDCs shall comply with the installation requirements applicable for double check valve assemblies (DCs). [image omitted; see the official code] Standard Detail No. 12.5-557.1 Double Detector Check Notes: (1) Brass plugs to be installed in all test cocks. (2) If domestic service is installed off the fire service, a second gate valve must be installed outside the vault. Joint restraint must be provided between this valve and the main. (3) Strainer may be required. See standard detail no. 12.5-557.2. [image omitted; see the official code] Standard Detail No. 12.5-557.2 Strainers One of the most common causes of backflow prevention assembly failure is the accumulation of sand, scale or debris trapped in the assembly. This debris can cause the assembly to fail its required testing and can contribute to a shorter working life span of the assembly. (Ord. 12274, § 1, passed 11-28-1995)
Source: City of Fort Worth, Code of Ordinances, City Charter and Zoning Ordinance (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/ftworth/latest/ftworth_tx/0-0-0-14801Fetched: 10/26/2026

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12.5-557 | Corpus