It is often hard for buyers to make the right choice for their pumping solutions. More often than not, they are presented with tough choices. However, with a careful consideration, you should be familiar with the basics of each pump and understand which one will be appropriate for the desired application. The two main categories are the high pressure positive displacement pump and the centrifugal one. They are quite distinct in a number of ways and one needs to be very familiar with both in order to make the right choice. How with clear information, it will be easy to understanding why the HPD pumps best fits into your process as opposed to the alternatives.
The first consideration is the viscosity of fluid being handled. Most pumps may not handle highly viscous fluids due to the friction created that leads to a drop in flow rate as well as efficiency. If the fluid is viscous, rotary pumps such as the PD pump tends to perform better since the flow rate increases with viscosity. The friction also generates heat, but the change in temperature may does not have an effect on their efficiency.
The first condition that will warrant the application of high pressure ammonia pump or high pressure CO2 pump is high viscosity. These pumps are the most efficient when it becomes necessary to move highly viscous liquids. The alternatives like the centrifugal ones are not efficient when pumping liquids that are viscous.
The shear pumping required is also low. Although liquid shear is not an issue in most cases, there are sensitive liquids that make it a critical consideration. A good example is the tomato paste and the latex paint both which can be destroyed if the pumping conditions are not right.
In case of metering applications, they offer the best solution. They meet the process requirement by delivering constant flow. For metering applications, there are several choices such as the peristaltic types, gear alternatives, diaphragm ones, plunger, piston and several others. All these offers optimal performance when considering metering applications.
It is also efficient regardless of the rate of flow. It continues to perform even when the flow rate is below 100-gpm at at a pressure as high as 3000-5000 psi. At any rate, it is ten times more efficient when pumping viscous fluids that can also be handled by centrifugal ones.
Lastly, you need to consider the liquid sensitivity.Speed operation that is normal with the centrifugal pumps easily shear sensitive liquids such as the tomato paste and latex paint among others. This means that centrifugal will be a very poor choice for such liquids. However, the displacement alternative on the other hands allow gentle speed, thus accommodating such liquids.
They are also available in different types to suit different applications such as high pressure CO2 pumps and the high pressure ammonia pumps among others. This makes them the most ideal solution for both domestic and industrial applications. However, it is always important to seek help and advice from professionals so as to make an informed choice. Today, there are several pumps in the market, some of which may not be suitable for a given type application. With expert advice, you can secure a good device with a good price bargain.
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