101 Guide to Choose the right duckbill check valve
Low cost components like check valves can have a big impact on an important installation if the wrong specification or selection is chosen. So make sure you choose the right check valve for your application.
Choosing the right check valve for a particular application depends on several key characteristics:
- Corrosive materials, abrasive suspended solids and debris
These can cause flap valves and swing check valves to rust, bind or seize. Therefore, we need to make sure that the materials used are capable of managing the fluids in question.
- High temperatures
When exposed to high temperatures, the material of some check valves wears out and becomes unusable. They must be properly specified to manage the proper temperature range.
- Fire-retardant elastomeric construction
The duckbill check valve’s fire-retardant elastomeric construction gives it good resistance to biological contamination such as barnacles and algae, as well as good abrasion resistance and the absence of any rusting or degradation.
- Corrosion resistance
With properly specified elastomers, flexible check valves provide excellent corrosion resistance to virtually all fluids with an operating temperature range of -65 to +250 degrees Fahrenheit.
- Maximum possible flow
Check valves are also usually specified according to the maximum possible flow rate and therefore according to the maximum valve flow coefficient (Cv).
- Sizing
When selecting a suitable check valve, careful consideration should be given to its size to eliminate or reduce the possibility of premature wear and failure.
- Maintenance
Unlike duckbill check valves, mechanical disc and ball valves can be expensive and difficult to maintain.
- Others
Other factors to consider when selecting a check valve include: the pressure rating of the valve, line size, whether the installation is horizontal or vertical, size and connection type, maximum leakage rate and pressure drop, and any special requirements.
With zero maintenance requirements, high durability and good reliability, rubber duckbill check valves are widely recognized as a good choice in many applications. To select the right duckbill valve, please contact our professional engineers.
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Jack
Hi, I’m the author of this post, and I have been in this field for more than 10 years. If you want to get more info about duckbill check valves or others industrial valves, feel free to ask me any questions.
