Fittings catalogue for low pressure sewer networks

Thesis describes the actual state of low pressure sewer systems designing, basic characteristics of low pressure sewer systems and design basics in Czech republic and abroad in accordance with czech and european standards. Next part contains description of fittings used in low pressure sewer and emphasizes its key role in design, service and maintenance of the system. Based on gathered informations the fittings calatogue for low pressure sewer networks was created. Followed subjects were closing fittings, backflow valves, cleaning sets and bleeding- and aerating vents. The last part of the bachelor thesis is a test of softsealing backflow valve for the purpose of tightness definition