By completing a number of projects in accordance with the continuous learning policy, Team Designing and R&D of Ettesal mechanic has become one of the leading authorities in the field of analysis, simulation, and design of various processes of supply, transmission, distribution, and aggregation of water and sewage. These agile units are capable of doing different projects in various sectors of industry. Constituent design is essential for the project's technical requirements as well as to serve as a visual reference for all participants. Therefore, exact design and submitting it to the executive team, cause to avoid project from any time delay and unplanned costs.