Duckbill check valves are one-way valves that close when the flow stops. They are used for a variety of applications. Their primary function is to prevent backflow and also metering. They are designed to work in a range of media and temperatures, making them suitable for use in many industrial settings. They are often used in water supply systems, wastewater treatment facilities, and reservoirs. They are also ideal for marine applications.
These check valves are available in a wide variety of designs, materials, and sizes. Inline duckbill check valves are installed inside a pipe, while slip on styles are fitted to the flange of a pipe. The valve is typically made of a flexible rubber diaphragm that creates a normally-closed system. The internal components can be custom-built as needed for the specific application.
Rubber duckbill check valves are a durable and cost-effective method for controlling back pressure. These valves are designed to provide an instantaneous check when the flow is stopped, and are manufactured using only the best engineering elastomers and rubber. They are designed to handle large obstructions, and are resistant to abrasion and damage.
Duckbill check valves are easy to install. They do not require manual assembly, and do not need any maintenance. They are made from elastomeric and flexible rubber, and are ideal for a variety of applications. They are suitable for sewage, seawater, and raw water, and are also suitable for abrasive materials. They can last for up to 30 years.
Duckbill check valves have a flexible rubber sleeve that is used as the body of the valve. The sleeve is made from a material that duckbill check valves is hydrocarbon-resistant, which makes them a good choice for abrasive and oily environments. They are constructed with an inner undercut to keep the valve tight.
Duckbill check valves are commonly used in a variety of industrial applications, including in water supply and wastewater treatment systems. They are available in three different styles, which include a clamp-type, a slip-on, and a flanged style. Each type has its own unique design and installation requirements. The flanged type is typically mounted onto a spool that is connected to a pipe. Its flange should be drilled in the same pattern as the valve. It should be secured to the spool by using clamps.
Compared to flapper and ball check valves, rubber duckbill valves have a low opening pressure. This makes them a reliable and effective solution for backflow prevention. They are durable and can withstand a range of conditions, from a few millimeters to more than 8 meters of water depth. Moreover, the elastomer is designed to repel water, saltwater, and marine organisms, so they provide long-term protection from corrosive materials.
Duckbill check valves are also available in a variety of finishes, including nickel, stainless steel, brass, and aluminum. They are also available in different operating pressures, ranging from 0 psi to 250 psi. In addition, they are available in a wide range of end connections.