The duckbill check valve is an inline check valve that uses a rubber material. It can be used in many applications such as sewage, water handling, agriculture, and irrigation. They are also known as “flow control check valves.”
This is a very common type of check valve, and is often applied in low pressure environments such as sewage and municipal pumping systems. However, their application depends on the specific location where the valve will be installed. Several different types are available, including slip on and flanged. A duckbill check valve is easy to install and has a high sealing capability. If you have a leak in your system, you can easily identify it by listening to the fluid flow.
These valves are made of a flexible rubber diaphragm, and are closed by positive pressure. As a result, the head loss is one of the lowest of all check valves.
Duckbill check valves are often constructed with an undercut, and may have a lip on the other end. There are a number of different styles, so your choice will depend on the exact application. Rubber Duckbill Check Valves are designed to be durable, and can handle large obstructions without any problems. Some of them are designed to withstand continuous exposure to corrosive materials.
Duckbill check valves can be custom-made, so you can choose the perfect type to meet your needs. Rubber duckbill check valves are a cost-effective solution to backpressure, and require no outside power or manual assistance to operate. In addition to being inexpensive, they are very easy to install. Moreover, they are very flexible, so you can install them in a variety of ways. You can fit them onto a pipe flange, or simply slip the flange over the pipe and adjust it to your desired position.
Rubber duckbill check valves are flexible, but they should not be overtightened. Otherwise, they can rotate. When installing a flanged duckbill valve, it is important to ensure that the flange is tight enough to provide a secure seal between the mating flanges. Make sure that rubber duckbill check valve the flange is drilled in the same pattern as the valve. Before installation, you should lubricate the flange, as it may move around the flange before fasteners are installed.
One of the most important features of a duckbill check valve is its ability to open with minimal pressure. Because the opening pressure of the slit is so low, it provides a very low head loss. For example, if the water pressure is 25mm, a Straight Bill Duckbill Check Valve can open at just 0.248 kPa, and a curved bill model will only need a pressure of about 0.1 kPa.
Compared to other check valves, rubber duckbill valves are not prone to mechanical wear, rust, or jamming. Instead, they are designed to provide backflow prevention and sealing, and can be easily assembled into a wide range of devices. Their durability makes them an ideal choice for long-term service.