In-line pumps are a key element of many hydraulic systems. These versatile devices ensure efficient fluid flow in installations. Their compact design allows for easy integration. In-line pumps are used in a variety of applications. They are suitable for heating, air conditioning and refrigeration. They are also used in industry and municipal services.

Our offer includes a wide selection of in-line pumps. Models with different parameters and power are available. We offer vertical multi-stage centrifugal pumps. Their power ranges from 0.37 kW to 4.0 kW. Variants powered by 3x230/400 V or 3x400 V are available. All our pumps operate at a frequency of 50 Hz.

Types and applications of in-line pumps

In-line pumps are divided into several main categories. The most popular are circulation and circulating pumps. They are used in heating and cooling systems. Transfer pumps are used to pump liquids. Booster pumps are used to increase pressure. We also offer specialist pumps for drinking water.

Examples of applications of in-line pumps:

Water circulation in heating systems
Cooling in industrial air conditioning
Pressure support in water supply networks
Transport of liquids in production processes
Circulation in pools and fountains

We recently completed a project for a large shopping center. We used 3.0 kW in-line pumps there. They provided efficient circulation in the extensive air conditioning system. Thanks to this, we managed to achieve optimal thermal comfort in the facility.

Selecting the right in-line pump

The correct selection of in-line pump is critical to system performance. When selecting, several important parameters should be taken into account. The first is the required pump capacity. It determines the amount of liquid pumped per unit of time. Another important factor is the lifting height. It indicates the pump's ability to overcome the resistance of the installation.

Also important are:

Type of pumped liquid and its temperature
Required system pressure
Available connections and installation space
Pump energy efficiency
Noise level during operation

In our daily practice, we see how important professional selection is. An unsuitable pump can lead to inefficient system operation. It can also generate increased operating costs. That is why we always recommend consulting our specialists. They will help you select the optimal in-line pump.

In-line pumps from renowned manufacturers in the Onninen offer

Our assortment includes products from leading brands. We offer in-line pumps from recognized manufacturers, guaranteeing the highest quality. Among the available brands are Grundfos and Wilo. These companies are known for their reliable and energy-efficient solutions. We also offer our own brands. These are Onnline, Fxa and Opal. They provide a good price-quality ratio.

We often come across questions about the differences between individual brands. Each manufacturer has its own unique technological solutions. Grundfos stands out with its advanced control systems. Wilo, on the other hand, offers exceptionally quiet pumps. Our own brands focus on ease of use and competitive prices. All of our in-line pumps meet rigorous quality standards.

Our experience shows that customers appreciate the variety of the offer. Thanks to this, they can choose a pump that is ideally suited to their needs. Regardless of the brand chosen, we guarantee full technical support. We also offer training in the field of operation and maintenance of in-line pumps.

In the case of modernization of older installations, we most often recommend energy-efficient models. They allow for significant reduction of operating costs. We recently replaced pumps in a large office building. The use of new in-line pumps with a power of 2.2 kW brought measurable savings. Energy consumption decreased by 30% compared to the previous solution.

In-line pumps are a key element of modern hydraulic systems. Their correct selection and installation are of great importance. They affect the efficiency, energy efficiency and reliability of the entire installation. At Onninen, we offer not only a wide selection of pumps. We also provide professional advice and technical support. Our experts will help you choose the optimal solution. We invite you to contact us and take advantage of our experience in the field of in-line pumps.

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