Performance data of an industrial pump

This article presents the performance data of industrial pumps and approaches for calculating them.

Determination of performance data using a pressure gauge to check pressure

Die pumping capacity, also known as power consumption, represents the amount of energy that is introduced into the transported medium. This energy increases its speed and pressure. Every type of industrial pump requires energy to increase and deliver the pressure of a liquid. The required pumping capacity depends on various factors affecting the pump itself, including the efficiency of the pump motor and the prevailing pressure. Other factors influencing pump performance relate to properties such as density, viscosity and flow rate of the transported liquid. In this article, you will find information to understand the required pumping capacity and an investigation of various approaches to calculate it.

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One of the most important performance data is the conveying capacity, also known as volume flow. It indicates how much liquid or gas the pump can deliver per unit of time. The unit for this is usually liters per minute or cubic meters per hour.

Another important parameter is the printingthat the pump can produce. Pressure is usually measured in bar or pascals. It indicates the force with which the pump can transport the medium. The higher the pressure, the greater the delivery height and the range of the pump.

Die power consumption is another relevant value. It indicates how much electrical energy the pump requires to perform its function. The unit for this is watts or kilowatts.

Die performance data A pump is crucial for choosing the right model for a specific application. They provide information on whether the pump can meet the requirements and is working efficiently.

The performance data of the wobble ring pump

Conveyors of up to 30,000 l/h

Delivery pressure up to 15 bar

Viscosities up to 1,000,000 mPa.s

Motor power up to 7.5 kW

You can find more in our product brochures:

Product brochure (DE)

Product brochure (EN)

Product brochure (NL)

What influences the flow rate of a pump?

The efficiency of pumps depends largely on the operating process. Various sources of loss, such as friction and turbulence, affect this trialby preventing full energy transfer. As a result, the absorbed motor power is often higher than the power actually delivered to the liquid.

Pumping efficiency, the ratio of net power to absorbed power, plays a central role here. Internal pressure losses within the pump also influence this factor. An optimization of operation and process can therefore be achieved through a holistic view of these elements.

There are three main types of efficiency losses:

Hydraulic efficiency losses: These are caused by energy losses due to shocks and friction as the liquid flows through the pump.

Volumetric efficiency losses: These occur as a result of unused liquid flow, which is referred to as leakage flow. This can be due to factors such as games between moving and fixed parts, delays in closing valves, leaks in seals, and the presence of gases and vapors.

Mechanical efficiency losses: These are caused by friction and mechanical resistance, primarily in ball bearings.

How do you calculate the power of a pump?

The performance of a pump consists of several components. This determines the efficiency and therefore the actual performance of the pump. To calculate the performance of a pump, the following factors must be considered:

Conveyor height: The delivery height is the difference in height that the pump must overcome in order to transport the medium. The higher the delivery height, the more energy is required and the higher the output of the pump.

flow rate: The flow rate indicates how much medium is transported by the pump per unit of time. Here too, the higher the flow rate, the higher the pump output.

efficiency: The efficiency of a pump indicates how efficiently it works. High efficiency means that the pump converts a large part of the input energy into delivery capacity. To calculate the actual performance of a pump, efficiency must be considered.

To calculate the actual output, you need the following values:

- H = the conveying height (m) included

-z 1 = the height of the pump entry (m), z 2 = the height of the pump outlet (m)

- Q = the flow rate (l/min, m³/min, m³/h)

-p 1 = the pressure at the pump inlet (Pa), p 2 = the pressure at the pump outlet (Pa)

- ρ = the density of the pumped medium (kg/m³)

-v 1 = the speed at the pump inlet (m/s), v 2 = the speed at the pump outlet (m/s)

and g = acceleration of gravity 9.81 (m/s²)

The formula for calculating power is:

P = Q * (p 2 - p 1)/ρ + (Q * (v 2 - v 1) + g * Q * (z 2 - z 1)

What does Q mean and contain in a pump?

Q stands for the flow rate of a pump. It indicates how much Fluid per unit of time is transported by the pump. The flow rate is usually expressed in liters per second (l/s) or cubic meters per hour (m³/h).

The flow rate Q depends on various factors. This includes, for example, the rpm the pump, you diameters the lines and the Pressure difference between inlet and outlet. The higher the flow rate, the more liquid the pump can deliver.

Industrial employee reviews performance data of industrial pumping system

What is the difference between conveying height and suction height?

Delivery height and suction height are important terms in pump technology that influence the pumping process.

Die Conveyor height describes the maximum height up to which a pump can transport water or liquids. It depends on factors such as pumping capacity, pipe diameter and system resistance. Larger conveying heights require more energy.

Die Suction height indicates the maximum height from which a pump can suck in liquids. It is influenced by atmospheric pressure, vacuum, and system resistance. Higher suction heights make suction difficult.

As a rule, the delivery height must not be greater than the suction height. Otherwise, the pump cannot suck in and deliver the medium. Therefore, both heights must be considered when selecting pumps in order to efficiency and ensure desired results.

What does max delivery height mean for pumps?

Max funding height stands for Maximum delivery height. The maximum delivery height for pumps defines the vertical distance over which water or liquids can be transported by the pump. It is expressed in meters and describes the difference in height that the medium can overcome. The actual distance between pump and destination is not meant, but rather the height that the medium must bridge. This is important to determine the appropriate distance, for example, when a pump on the ground pumps water into a raised tank.

The maximum delivery height is decisive for choosing a suitable pump, as it determines whether the medium can overcome the desired distance. Pumps with a maximum delivery height that is too low cannot transport the medium sufficiently high.

Factors such as pumping capacity, pipe diameter, pressure loss and viscosity influence the maximum delivery height.

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