Why High Pressure Process Pumps Are Highly Revered

By Daphne Bowen


Pumps are an efficient way of transmitting fluids. High pressure process pumps work by trapping an amount of fluid of a given volume and then releasing it via an outlet usually a pipe. They are widely used because the pressure has no implications whatsoever on the amount of fluid that is going to be moved. Three relevant subdivisions of the constant volume pumps are the rotary, reciprocating and linear pumps. The mechanism by which the fluid is transmitted usually determines these subdivisions.

Rotary drives are used in situations where the liquid that is being moved is thick or in scientific terms possesses a high level of viscosity. They cannot therefore be operated dry for extended durations. This would imply that abrasive fluids such as water will not be transmitted with the required efficiency. The only exception is air and vapor but this also has to be done under strict time constraints. Circulation of lubricant oils through turbines and engines is a common application of the rotary pumps.

Reciprocating drives are more dynamic in that they can transmit both abrasive and viscous fluids. They work through the motion of a piston in a cylinder of fixed capacity. Their dynamism however comes at a cost since they are actually slower compared to the other mechanisms of transmission although it is highly efficient. Common place usage is in circumstances that need to transmit low volumes of the fluid but under high pressures.

Linear drives are simplistic in design but still retain their ability to perform the task required of it. One would only need a rope, a wheel and a piece of PVC piping to construct one. Since these materials are readily available, its use has spread all around the world. It serves as a pump for water from wells and boreholes.

Deriving the full potential of the constant volume drives can only be achieved when the installation is done through an elaborate means of predetermined steps. These steps are usually clearly outlined in the user manual. Every manufacturer goes out of their way to ensure proper installation is done as long as the instructions are followed.

Constructing a solid foundation is however intuitive and can be done prior to the purchase. A good foundation is based on reinforced concrete. Heavier units usually require stronger foundations. Once the unit is brought it is fitted on a steel base plate that has been fastened to the concrete slab. All that is required now is a step by step application of the user manual to complete installation.

Factors that determine the choice of the pump can be divided into two; the viscosity of the fluid and the pressure needed. Changes in viscosity can have huge implications on the flow rate and efficiency. These might be slight, huge or even moderate changes.

Another consideration revolves around pressure. There is a direct correlation between the changes in the strain and the rate of flow and efficiency. Pressure pumps have long been advocated since they maintain high efficiency levels and a constant rate of flow even with huge changes in pressure and viscosity.




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