This ABS P-trap with union makes under-sink servicing fast—undo the union to clear blockages, then re-seal. Hub × hub sockets solvent-weld to Schedule-40 IPS ABS for a rigid join in non-pressurized DWV systems and built to ASTM D2661 and CSA B181.1 and commonly cUPC/NSF/ANSI 14 listed (Canada/U.S. code acceptance). Typical ABS DWV service temp to 140 °F (60 °C); DWV is not air-testable—hydrostatic testing only.