Hey there! As a supplier of plunger-type metering pumps, I often get asked about the difference between positive-displacement and non-positive-displacement plunger-type metering pumps. So, I thought I’d take a few minutes to break it down for you. Plunger-type Metering Pump
Let’s start with positive-displacement plunger-type metering pumps. These pumps are pretty cool because they move a fixed amount of fluid with each stroke of the plunger. It’s like they have a little bucket that fills up and then dumps out the same amount of liquid every time. This makes them really accurate for metering applications.
One of the big advantages of positive-displacement pumps is their precision. They can deliver a very consistent flow rate, no matter what the pressure is on the system. This is super important in industries where you need to add just the right amount of chemicals or other substances. For example, in water treatment plants, you might need to add a specific amount of chlorine to disinfect the water. A positive-displacement plunger pump can do that job really well.
Another great thing about positive-displacement pumps is that they can handle high pressures. They’re built to push the fluid through the system even when there’s a lot of resistance. This makes them suitable for applications where you need to pump fluids into a high-pressure environment, like in oil and gas production.
However, positive-displacement pumps also have a few drawbacks. They can be a bit more expensive to buy and maintain compared to non-positive-displacement pumps. The moving parts in a positive-displacement pump need to be well-maintained to ensure they keep working properly. And if the fluid you’re pumping has a lot of solids or abrasive particles, it can wear out the plunger and other components faster.
Now, let’s talk about non-positive-displacement plunger-type metering pumps. These pumps work a little differently. Instead of moving a fixed amount of fluid with each stroke, they rely on the pressure difference to move the fluid. They’re more like a fan that blows air, but instead of air, they’re moving liquid.
Non-positive-displacement pumps are generally cheaper to buy and easier to maintain. They don’t have as many moving parts as positive-displacement pumps, so there’s less that can go wrong. They’re also better at handling fluids with a lot of solids or abrasive particles because the design is less likely to get clogged.
But non-positive-displacement pumps aren’t as accurate as positive-displacement pumps when it comes to metering. The flow rate can vary depending on the pressure and other factors in the system. So, if you need a very precise amount of fluid to be delivered, a non-positive-displacement pump might not be the best choice.
In terms of pressure, non-positive-displacement pumps are not as good at handling high pressures as positive-displacement pumps. They’re more suitable for applications where the pressure is relatively low.
So, which type of pump is right for you? Well, it depends on your specific needs. If you need high precision and can handle the higher cost and maintenance, a positive-displacement plunger-type metering pump is probably the way to go. But if you’re on a budget and don’t need the highest level of accuracy, a non-positive-displacement pump might be a better option.
As a supplier of plunger-type metering pumps, I’ve seen all kinds of applications and customer needs. I can help you figure out which type of pump is best for your situation. Whether you’re in the chemical industry, water treatment, or any other field that requires metering of fluids, I’ve got the expertise to guide you.
If you’re interested in learning more about our plunger-type metering pumps or need help choosing the right one for your application, don’t hesitate to reach out. We can have a chat about your requirements and see how we can meet them.
Progressive Cavity Pump References:
- Chemical Engineering Handbook
- Pump Industry Manuals
DEPAMU (Hangzhou) Pumps Technology Co., Ltd.
DEPAMU (Hangzhou) Pumps Technology Co., Ltd. is one of the leading plunger-type metering pump manufacturers and suppliers in China, with professional factory we are able to produce Chinese best plunger-type metering pump at both low price and good quality. If you are looking for Germany technology or famous brand plunger-type metering pump, please feel free to contact us.
Address: No. 658, 20th Street, Hangzhou Economic & Technological Development Zone, Hangzhou City, Zhejiang Province, China
E-mail: international@depamu.com
WebSite: https://www.depamupumps.com/
