Spherical disc valve is designed to meet the requirements for containment of solids, powders, and slurries. It comprises a valve body including body portions positioned adjacent one another. The body portions each have a collar portion, wherein the collar portions of the body portions are substantially aligned and together define an aperture. A valve member includes a shaft segment is positioned within the aperture, wherein the valve member is configured to rotate about an axis defined by the shaft segment for selectively closing and opening the disc valve. A clamping member is positioned about the collar portions of the body portions, the clamping member being configured to urge the collar portions toward the shaft segment and maintain the body portions adjacent one another.