This standard describes bolted, split-sleeve couplings (couplings) used to join plain-end pipe of similar outside diameter. Couplings may be manufactured from carbon steel or stainless steel and are intended for use in systems conveying water, wastewater, or air used in water treatment. This standard covers nominal coupling sizes from 3/4 in. (20 mm) through 144 in. (3,600 mm). Major changes made to the standard in this revision include the following: the reference to ANSI/AWWA C222, Polyurethane Coatings has been deleted from the standard since split-sleeve couplings must be bent during installation and the C222 coating could be damaged (Section 2 and Sec. 4.5.2); definitions for static and dynamic deflection were added (Section 3); a second sentence was added to Sec. 4.3.1 to ensure restrained couplings will not pull apart under internal pressure; Sec. 4.4, Performance, was rewritten to clarify performance issues relating to angular deflection; Table 2 was revised to reflect allowable deflections for nonrestrained couplings; and, Table 3 was revised to list pipe joint gap by coupling body width rather than by pipe size.