PVC Fittings Design and Installation Guide
This guide by the Uni-Bell PVC Pipe Association outlines the design and installation of gasketed PVC fittings for potable water, force main, pressure irrigation, and reclaimed water systems. It covers fittings for PVC pipes up to 60 inches in diameter but excludes solvent-welded and fusible PVC fittings. Manufacturing Methods PVC fittings are made using three methods, all with gasketed push-on joints that meet or exceed the pipe’s pressure rating. 1. Fabricated Fittings Constructed from PVC pipe meeting AWWA C900 standards, these fittings include thermoformed bends, couplings, and reinforced structures. Available sizes range from 4 to 60 inches with pressure classes equal to or greater than the connected pipe. Products include tees, bends, reducers, and adapters. 2. Injection-Molded Fittings Made per AWWA C907 by injecting PVC into molds, these fittings feature a wall thickness 25% greater than DR18 pipe and meet specific strength standards. They are available in 4 to 12 inches and Cla...