Athulya Bellows & Engineering [P] Ltd. Manufactures Elbow Pressure Balanced Bellow. Athulya Bellows & Engineering [P] Ltd. Supplies metallic expansion bellows / joints / compensators and corrugated hoses. Elbow Pressure Balanced Bellow is used to retain and balance the pressure thrust so that main anchoring of the pipe or adjacent equipment is not required, and forces and movements on attachment flanges of delicate equipment, such as turbines, are kept to acceptably low levels. Elbow Pressure Balanced Bellow is usually required because axial deflections are also present. In order to accept these movements, a bellows is added beyond the elbow with the same cross-sectional area as the ones in the universal section.