When it comes to controlling the flow of chemicals, two of the most common types of pumps used are metering pumps and diaphragm pumps.
If you’re trying to decide which type of pump to use for your application, it’s important to understand the differences between these two types of pumps.
Let’s take a look at how they work, their advantages and disadvantages, and when you should use each one.
Metering Pump Vs Diaphragm Pump: How They Work
A metering pump is a type of positive displacement pump that uses an adjustable stroke length in order to precisely control the flow rate of liquid.
It works by increasing or decreasing the number of times it cycles per minute in order to control the output flow rate.
A diaphragm pump works by using mechanical force to move a flexible diaphragm against an opening in order to generate suction.
This suction then pulls liquid into the chamber where it is then pushed out through an outlet valve.
Advantages & Disadvantages
Metering pumps have several advantages over diaphragm pumps, including being able to handle higher pressure without sacrificing accuracy, having fewer moving parts which makes them easier to maintain and service, and being able to run for longer periods without needing repairs or maintenance.
However, they are not well-suited for applications that require large volumes of liquid or require high levels of suction power.
On the other hand, diaphragm pumps are great for applications that require large volumes or high suction power but don’t need precise control over output flow rates as they tend to be less accurate than metering pumps.
When Should You Use Each One?
Metering pumps should be used whenever precise control over output flow rates is needed. It's also important to consider what type of liquid will be pumped; if it's a highly viscous liquid (like honey), then a metering pump would be ideal because its adjustable stroke length can more easily handle thick liquids than a diaphragm pump can.
Diaphragm pumps should be used whenever high levels of suction power are needed or when pumping large volumes of liquid; however accuracy may suffer in these cases so keep this in mind when making your decision.
Conclusion
When deciding between using a metering pump or a diaphragm pump for your application, it’s important to understand how each one works, their advantages and disadvantages, and when each one should be used.
Metering pumps offer precise control over output flow rates while diaphragm pumps provide greater suction power and can handle larger volumes but tend to have decreased accuracy compared with metering pumps.
Ultimately, the choice depends on what type of application you need the pump for as well as what kind of liquid will be pumped through it; if you take all these factors into consideration you should have no trouble deciding which option is best suited for your needs.
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