Fugitive emissions are one of the pollution that can affect environment, health and also economy. It is a deemed to be an important part of the debate on climate change because they represent a significant portion of greenhouse gas emission. It is estimated that 60-70% of the fugitive emission comes from valve. This paper presented a study which focusing on fugitive emission by valve, which will be solved using GAMS to optimize the selection of valve and achieve the objective. The fugitive emission is minimized by replacing the current valve with new valve based on its emission rate. Type of valve that has been considered in this study is ball valve, gate valve, butterfly valve, globe valve and plug valve.Based from the results, it can be said that plug valve, gate valve and butterfly valve is most preferable compare to other type of valve for fugitive emission reduction. Different types of valves give different price, so, the selection of valve are depending on the budget of the project. The fugitive emission can be reducing in easy way at the design stage by using GAMS application to optimize it.
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