This paper presents the kinematics of a six-bar linkage which magnifies the magnitude of linear motion. A designed mechanism eliminates the problem of long bellow lengths in bellow valves which makes the valve design aesthetically more suitable for industrial applications. The mechanism is a planer linkage with a single degree of freedom where a straight-line motion at input is converted to an extended perpendicular translatory motion at output. The amplification obtained at output can be increased by addition of a link. The mechanism is based on a Stephenson III six-bar linkage. Graphical synthesis of the mechanism is attained through qualitative design process. Analyses on the proposed solutions are performed to determine their viability. Iteration between the synthesis and analysis is done until the desirable results are achieved. The paper uses the vector closed loop equations method for kinematic analysis, and later, the results are also verified by a numerical example. After the geometry and motion for the task is achieved, as an application of the mechanism, the mechanism is applied to a bellow globe valve as its opening and closing mechanism. Force analysis is carried out to study the force propagation in the mechanism and actuation of the valve. The synthesized linkage application in the globe valve reduces the length of bellow required up to 75 which as a result reduces the height of the valve significantly. © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2020.