Upgrade your home brew setup! Excellent for fermenter outlets or other sanitary applications with slurries, unlike ball valves butterfly valves have no pockets for derbies to lodge in, and may be cleaned in place. Heavy duty stainless steel butterfly valve, 1.5 inch tri-clamp style. The valve has a spring loaded handle and locks into three positions, full on, half on and shut. Made of 304 stainless steel.