Duckbill check valves are nonmechanical and do not slam when closed. They also have a low cost and do not require any maintenance. These pros outweigh their cons, so you should consider installing a Duckbill valve in your system. If you’re not sure whether this type of valve is right for your system, read on to learn more.
Duckbill check valves are non-mechanical
Duckbill check valves are a unique type of check valve. They are designed with a flexible rubber diaphragm that forms a closed valve when positive pressure is applied to it. This design eliminates the need for manual or power operation, and is able to shut off flow without leakage or backflow. Unlike mechanical valves, duckbill check valves don’t have any moving parts that can corrode over time.
Duckbill check valves are generally made of rubber or other elastomeric materials. They have an oblong shape and are flexible. Because of their design, they are resistant to corrosion and have a long service life. They are also highly resistant to organic contaminants, and are effective in preventing sewage backflow.
They require no maintenance
Duck bill check valves are designed to provide trouble-free backflow prevention. Because of their flexible sleeve design and high-quality fabric-reinforced elastomer material, they ensure maximum flow while minimizing pressure drop across the valve. They are widely used in wastewater piping systems. Dutco Tennant has been serving the wastewater industry for more than 40 years, and its check valves are designed to meet regulatory standards and provide exceptional performance.
Duck bill check valves can last as long as fifty years, depending on the installation type and the environment where they are used. In contrast, mechanical check valves are usually replaced after only a decade of service. Even though check valves are low-cost components, they can often be neglected in plant specifications, which leads to costly maintenance.
They do not slam when closed
A duck bill check valve is a type of flow-sensitive valve that does not slam when closed. The https://evrproducts.com/products/rubber-duckbill-check-valves/ name derives from the shape of the valve’s flaps, which resemble the bill of a duck. They remain closed under zero flow conditions, but once pressure builds up, they open.
A nonslam check valve is made of a spherical disc with a spring-loaded disc that pushes it back toward the valve seat, preventing slamming. This valve also has a soft-closing design to reduce the effects of water hammer.
They are inexpensive
Duck bill check valves are an inexpensive and reliable way to control flow in a system. They work by relying on a flexible rubber diaphragm to close when positive pressure is applied. This helps to prevent backflow and prevent mud and silt from entering the system. They are also nearly silent and do not require a power source to operate.
These valves are great for low pressure liquid and gas piping systems. Because they are lightweight, they are also cheap to maintain. As a result, they are popular for use in a wide variety of systems.
They prevent sewage backflow
The purpose of duck bill check valves is to prevent sewage backflow by controlling the flow rate. They work by detecting a pressure difference between the feed and discharge pipe, and shutting off the flow if there is insufficient flow. There are two types of duck bill check valves, the flanged type and the slip-on style. The flanged type is attached to the pipe by flanges, while the slip-on style is attached to the end of the discharge pipe. The slip-on style has an inner undercut for tight fixation, and the outer undercut is used to fit the valve over the discharge pipe.
The material used in the construction of duck bill check valves can affect the longevity and efficiency of the valve. In particular, the elastomer material can make a significant difference in a duck bill check valve’s efficiency and life expectancy.