High Pressure Positive Displacement Pump: Making The Wise Selections

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.

Not many types of pumps, and certainly not the centrifugal pump will be able to continue pumping with insufficient liquid. If the liquid is insufficient, there is a formation of gas bubbles in the suction. This causes the loss of prime that means the pumping process will stop. This is not the case with the PD pumps as they can handle high air percentage. There are many fluids that require force that is beyond the range of the centrifugal pumps. The common examples that you easily come across include pressure water-cutting applications and sandblasting both which relies on positive displacement pump technology.

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.

If there is a need for accurate, repeatable measurement, then this is the solution. It comes with devices that limit slip which is very ideal for any metering application, thus allowing for the desired level of accuracy and consistency. It also allows for the variation of flow through mechanical or electrical means.

The pumps are available in wide varieties, including the high pressure ammonia pump and the high pressure CO2 pump designed for specific applications. More importantly though, they come in different sizes to fit small scale domestic applications as well as large scale industrial or agricultural use. In order to get the best deal in terms of quality and price, it is ideal to widen your search and consider enlisting the services of an expert to help you make the right choice.

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