Split Sleeve Joint - 4” - 144”
Split-sleeve couplings can be designed to function in a non-restrained manner, or to provide restraint of longitudinal thrust forces within the confines of the coupling itself. Restraint is achieved by welding a ring to each mating pipe end at a specified location so that the coupling will encapsulate and lock against the rings. Given the internal locking configuration of this type of coupling, electrical isolation is only possible with the non-restrained type of split-sleeve coupling. For non-restrained split-sleeve couplings, electrical isolation is achieved by use of one or two rubber boots, similar to that for bolted sleeve-type couplings. Requirements for split-sleeve couplings are defined in AWWA C227.