What is standing water and why is it dangerous? Standing water is water that has stood still for more than four hours. Standing water can occur within a pipe network, within the infrastructure of surface water, reservoirs, storage tanks and pipes of residential buildings. It is often caused by waiting times due to installation or maintenance, blockages, flooding or irregular water use. Standing water is dangerous, because it provides the ideal living conditions for water bacteria and germs. These can pose a health risk to the person exposed to them. In some circumstances, it is also possible for contaminated water to flow back into clean pipework, resulting in a loss of quality in a production process.
Standing water can be partially avoided within a pipe system by means of regular flow. Reliable equipment and manageability are of added value to limit the risks. Due to causes such as: blockages, flooding or long-term maintenance, the risk of standing water can never be completely excluded. This makes it important to protect clean pipework against backflow of potentially contaminated water.
The rubber duckbill check valve is the ideal solution to prevent backflow. Check valves are available in almost every industrial application as check or one-way valves. Check valves perform a vital function to prevent backflow and ensure efficient operations. The rubber check valve creates a physical barrier between potentially contaminated fluids and clean pipework. With a single inlet and outlet, the check valves are operated by a differential pressure. Above a certain upstream pressure, the valve will open automatically without the need for any other intervention. With partial or complete underflow on the outlet side, the valve closes due to the pressure on the membrane. This completely eliminates the risk of backflow. View the product page.