Charles Ross and Son Company recently completed its 36th 500 cubic-foot ribbon blender, which is designed for a major chemical company. The blenders are constructed in stainless steel and each is designed for operation under vacuum and internal pressure. All include jackets for heating and cooling, as well as special domed covers and a flush-type pneumatically-operated discharge valve. The drive systems include a 150-horsepower motor directly coupled to a heavy-duty reducer for operation at 22 rpm. Ribbon blenders are available from ½ to 500-cubic-feet. Standard options include sanitary or air purged stuffing boxes, jackets for heating and cooling, sanitary construction and covers to meet client’s production needs.