Image Betts Wet-R-Dri™ TTMA Flanged Butterfly Valve Markets Transportation Product Options Part Number Size WD201ALVB 2" WD206ALVB 2" WD301ALVB 3" WD306ALVB 3" WD401ALVB 4" WD406ALVB 4" WD501ALV 5" WD506ALV 5" WD606ALV 6" WD601ALV 6" WD801ALV 8" WD806ALV 8"