The Betts WD306ALB001 is a 3-inch manually operated Wet-R-Dri butterfly valve designed for tank trailer applications. This lightweight aluminum quarter-turn in-line stop valve is suitable for liquid, gaseous, or dry products and features TTMA flange dimensions for standard tank truck connections. The manual detent model provides a positive stop in the open and closed position with a detent spring and ball that assist in holding the disc in the open or closed position. Additionally, the "001" suffix indicates this valve has an E-coated valve body construction for enhanced corrosion resistance and extended service life.