ASME A112.4.4 pdf download Plastic Push-Fit Drain, Waste, and Vent (DWV) Fittings 2 GENERAL REQUIREMENTS 2.1 Workmanship Push-fit DWV fittings shall (a) be free ofdefects thatcan adverselyaffectfunctioality or cause leaks (b) not restrict the flow capacity of a DWV system (c) not obstruct flow (d) be free ofvisible cracks, holes, or foreign inclusions (e) have uniform wall thickness (f) be...