All efforts in advanced management systems should maximize value for the customer. One effective way to identify and realize this value is to map the product's flow from end customer to a supplier by visualizing the value streams of individual processes. This paper aims to analyse and propose the introduction of a lean value stream in vacuum pump assembly to achieve increased production output. Vacuum technology is the field of engineering concerned with creating and using a vacuum. It,

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... e, deals with an environment in which the gas pressure is lower than the atmospheric pressure. A vacuum pump is a gas pump that extracts air from an enclosed space to create a vacuum. The basic parameters are the vacuum level achieved and the pumping speed. Several design solutions are available that meet the aforementioned basic parameters. A turbomolecular pump was selected for this study. The incentive to improve the material and information flow on the vacuum pump assembly line is the significant increase in orders from the customer. The technique used is production value stream mapping. Following the output of the Value Stream Mapping (VSM), a change plan is determined to optimize the assembly process, which will positively influence the future state of the value stream to meet the customer's requirements.