Silver-Line - Model SDR 21 - Belled End 20 ft. -PVC Pressure Pipe

SDR 21 - Standard Compliances: ASTM D-2241, standard for pressure pipe (NSF®-pw-G). Sizes 2″ – 6″ also conform to ASTM F-480, standard for well casing (NSF®-wc). 5″ is dual rated SDR 21 / SCH 40 and conforms to D-1785 and D-2241. Material complies with ANSI / NSF® Standard 14 & 61.