Abstract: A thermoformed PVC, modified PVC, CPVC, metal or coated metal cover, covering system and method is provided for covering assemblies of pipe and pipe insulation, hangers, support rods and mechanical assemblies wherein the assembly is biocide treated, covered by and completely enclosed by the cover, the cover is sealed in order to prevent bacteria growth within the cover while allowing a smooth outside surface for biocide application. The cover can be modified to facilitate the application of biocide after the assembly is covered by providing resealable openings in said cover.

Abstract: A pipefitting cover specially designed to enclose an insulated Y-shaped joint is disclosed comprising two half sections, one adapted to the shape of a straight pipe segment and the other adapted to interlock with the other section while also accommodating an additional pipe segment protruding at an angle from the first straight pipe segment.