DN15 to DN200 (1/2''8" Inch) Size Range WCB and CF8 are the materials used in the ball vale. The stainless steel flanged ball valve's 3-way design gives several flow direction options, allowing for fluid diverting, mixing, or isolation. This valve has a body constructed of CF8 stainless steel, which provides high corrosion resistance and assures a long service life even in hostile conditions.