Check valves are important tools for system operators and designers, preventing backflow and protecting other valves. They can also be used to control the flow of fluid in reverse. The best check valves are easy to operate, have low maintenance requirements, and are quiet.
A rubber check valve is a type of check valve that is made from rubber compounds. These valves are manufactured to resist abrasion, erosive and other harsh fluids. They can be installed in a variety of applications, including wastewater treatment plants, tidal operations, and outfalls. They are also suitable for use in cold weather conditions.
Rubber check valves have a very long life. They can last for up to 35 to 50 years, depending on the application and the materials they are made from. They are generally very easy to maintain, and are resistant to abrasion. This makes them a cost-effective solution for controlling back pressures in pipelines.
Although they are not as well known as flap valves, rubber check valves can offer many advantages over their more expensive counterparts. For example, they can be installed vertically, can be installed at different angles, and are quieter. They can be adapted to handle high flows, and they do not require specialized support. They are also available in a wide range of sizes. They are especially useful in submerged applications. They can be used for water and wastewater treatment, as well as for food and beverage processing.
Unlike flap valves, rubber check valves are not affected by mud, sand, or sediment. Moreover, the material used in their construction absorbs energy better than other types of check valves. They can handle temperatures as low as -65 deg. to as high as +400 deg.
Another advantage of a rubber check valve is the fact that rubber check valve they are not prone to wear and tear. They are also quieter than metal check valves. They are also capable of absorbing ultraviolet radiation. They are also suitable for use in freezing temperature. Lastly, they are independent of the sleeve or hinges they are attached to. Therefore, they can be easily adapted to hard-to-reach places, and they can be installed in non-circular pipes.
In addition to their ability to withstand harsh conditions, rubber check valves are also resistant to abrasion. This is particularly true for the more abrasive types of liquids, such as saltwater. Nevertheless, they are still vulnerable to rust and corrosion, which can be a significant disadvantage if not properly maintained.
A leaking check valve can cause serious damage to a pipeline, so it is important to find the right one. It is also vital to make sure that the material the valve is made from is compatible with the liquids being pumped through it. This can prevent leaks and ensure that the valve does not corrode. If the material is not suitable for the system, it can lead to noisy water hammers.
It is important to consider the specifications of a check valve, such as the diameter of the pipe being used, the flow rate, and the size of the outlet opening. It is also important to choose a check valve with the appropriate rating. A check valve should be rated according to its maximum immersion depth. This will be determined by the pressure difference between the liquid in the pipeline and the pressure of the valve.