Solutions for Air Valve Breakage Caused by Hydraulic Transients in Pinellas County's Wastewater Force Main System
Abstract:Several air valves installed at higher points in a portion of Pinellas County's wastewater force main system generated significant and continuing pressure spikes, resulting in air valve breakages. A transient model was developed to identify the potential causes of the air valve breakages and the pressure spikes occurring in the system. Simulations showed that air pocket collapse inside an air valve could generate very high pressure spikes if air exhausts too fast from the air valve and if the air valve cannot trap sufficient air before it closes. The simulated results are in agreement with field-recorded data for the system. Three methods—using a new type air valve, adding an air-throttling device, and extending the pump shutdown time—have been studied to solve the problem of air valve breakage and high pressure spikes.
Document Type: Research Article
Publication date: 2009-01-01
More about this publication?
- Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.
WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Learn about the many other WEF member benefits and join today
- Ingenta Connect is not responsible for the content or availability of external websites