ABS-DWV Fittings Schedule 40 - NSF approved for DWV applications. Meets the requirements of ASTM D2661. For use with ABS-DWV pipe. Sizes are expressed in inches of pipe size. Hib (H) signifies large, non-threaded opening in fitting - pipe slips into this opening. Spigot (Sp) signifies smaller, non-threaded openings in fitting - this slips into the hub opening of another fitting. Threaded openings are described as male pipe threat (MPT) or female pipe thread (FPT).
Schedule 40 - NSF approved for DWV applications. Meets the requirements of ASTM D2661. For use with ABS-DWV pipe. Sizes are expressed in inches of pipe size. Hib (H) signifies large, non-threaded opening in fitting - pipe slips into this opening. Spigot (Sp) signifies smaller, non-threaded openings in fitting - this slips into the hub opening of another fitting. Threaded openings are described as male pipe threat (MPT) or female pipe thread (FPT).