Collaborative Networks are becoming ever more important as a lunchpad for the achievement of competitive advantages and for the creation of socio-economic benefits. According to the relational view theory, joint efforts can indeed generate relational rents. However, task coordination is not a sufficient means for value creation. Indeed, Collaborative Networks have to create a link between several aspects, such as trust, culture of collaboration, knowledge sharing, managerial processes, incentive systems, ethical code and so on in order to create cooperation and, thus, value. Aim of this work is to analyze how these aspects affect each other and how they affect value creation within collaborative networks. In order to do so, we develop a model, based on UML and e3value, in which the main factors impacting on value creation and value exchanges within CNOs are represented. After the description of the model, we analyze a case study of a CNO.