Galvanized grooved joining system.
Omaha Municipal Code § 49-818
in effectSec. 49-818. - Galvanized grooved joining system.
The following provisions shall apply to galvanized grooved joining systems:
(a) Water supply fittings shall be full flow, ductile iron, hot dipped galvanized conforming to ASTM A153 or zinc electroplating conforming to ASTM B-633 and NSF 61.
(b) Couplings shall be rigid ("zero-flex") style consisting of a synthetic rubber gasket and ductile cast iron housing conforming to ASTM A-536.
(c) Gaskets shall be molded of an EPDM compound conforming to ASTM D-2000 and designed for domestic water temperatures between 30 degrees and 230 degrees Fahrenheit.
(d) Couplings shall be installed according to the manufacturer's instructions. Couplings shall form a system capable of withstanding a 300 psig static test.
(e) Pipe used for water supply systems shall be Schedule 40 galvanized steel pipe conforming to ASTM A53 and NSF 61.
(f) May only be installed on the downstream side of the first valve or bypass tee after the meter.
(Ord. No. 40524, § 1, 10-20-15)
Source: City of Omaha, Municipal Code and City Charter (Municode Library, library.municode.com)URL: https://library.municode.com/ne/omaha/codes/code_of_ordinances?nodeId=OMMUCOCHGEORVOII_CH49PL_ARTVIIIQUWEINMA_S49-818GAGRJOSYFetched: 10/28/2026