Dual chain drawbench is designed to draw tubing through dies and over internal dies. It is required to reduce diameter as well as improve strengths of the tubing. The draw carriage pulls at the centerline of draw. It creates an over turn moment between the chain and the draw centerline. Draw forces are self-contained within the bench structure to minimize foundation or reinforcement requirements. Tube loading occurs at the top of the drawbench and discharge is directly under the centerline of draw.
Muller mixers are widely used in mixing foundry sands and the ceramics industries prefer it for the preparation of clay-based mixtures with water. The Muller mixers consist of wheels, pans, plows and surfaces. Based on these parts and their axis and direction of rotation with respect to shaft they are classified into three types. The muller wheels are disk shaped and adjustable. They create pressure and rubbing action. The surface is made up of stone or ceramics but the hub is made of steel. The plows rake and run the material into the path of the muller. The pans may be jacketed for steam or water-cooling. Mixing is carried out in a single round pan with two muller wheels rolling over material in a circular path. This action imparts rubbing, kneading, and smearing to the material being mixed.
A dual chamber orifice fitting comprising a first chamber maintained in fluid communication with a pipeline, a fluid flowing in the pipeline passing through the first chamber; a second chamber selectively maintained in fluid communication with the first chamber; a sealing member selectively rotatable from a first position wherein the sealing member seals the first chamber from the second chamber, and a second position wherein the sealing member permits the first chamber to be placed in fluid communication with the second chamber.