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Mar 17, 2022 · Duckbill check valves are non-mechanical, require no maintenance, and do not slam when closed. They are also resistant to organic contaminants such as algae and barnacles and have no problem disposing of suspended solids entrained streams, such as abrasive slurries.
Mar 7, 2024 · Conversely, when the flow ceases or reverses, the slit naturally closes, forming a seal to prevent backflow. This inherent flexibility and self-sealing mechanism make duckbill check valves highly efficient and reliable in controlling fluid movement. Why Do We Need Duckbill Check Valves?
Cla-Val Rubber-Flex Duckbill Check Valves are designed to provide outstanding back-flow prevention; eliminating costly and unwanted back-flow from rivers, oceans, storm water, and is an excellent choice for sewage diffuser systems.
Check Valve Slam. Check valve slam occurs after pump stoppage when the system flow reverses back towards the pump before the check valve is fully closed (Figure 1). The reverse flow causes the check valve to close rapidly through the remaining portion of its travel.
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May 1, 2024 · When compared to conventional check valves, duckbill valves offer several distinct advantages: Enhanced Durability Built to withstand corrosive and abrasive conditions, they outlast many traditional check valves, reducing long-term replacement costs.
Surprisingly, a resilient-seated check valve can make the same metallic slam sound as a metal-seated valve. To prevent slam, a check valve must either be able to close in a frac-tion of a second or be fitted with oil dashpot devices or actuators to con-trol its closure over several seconds or (depending on the length of the pip-ing system) minutes.
In response, the elastomer Tideflex® Duckbill Check Valve was developed to eliminate the operational and maintenance problems associated with flap gate check valves, including corrosion of mechanical parts, freezing open or shut, warping, and clogging due to entrapped debris. The EPA report, stating the benefits of Tideflex® Check Valves.
