Insight into Centrifugal Pumps

Industrial Pumps Insight into Centrifugal Pumps

2023-06-28 From Ahlam Rais 4 min Reading Time

Related Vendors

Griswold Pump Company

Sulzer Pumps Wastewater Germany GmbH

Maag Pump Systems AG

Italvacuum, Srl

ProMinent GmbH

Centrifugal pumps pump lower viscosity liquids with a high flow rate and are used across the chemical, petrochemical as well as wastewater treatment industry. These pumps play a vital role in industrial plants and market players have now introduced many new features to these pumps which makes them different from their counterparts. In this article, we have listed some of the latest innovations in this space.

Centrifugal pumps are used across the chemical, petrochemical as well as wastewater treatment industry. (Source: Aleks Kend - stock.adobe.com) — Centrifugal pumps are used across the chemical, petrochemical as well as wastewater treatment industry.
(Source: Aleks Kend - stock.adobe.com)

The global centrifugal pump market is estimated to grow from 39.7 billion dollars in 2023 to 51.5 billion dollars by 2028, states market research firm Markets and Markets. It further adds that the market is expected to record a CAGR of 5.4 % during the forecast period and that the increasing demand for power plants will play a significant role in this upward market scenario. Diverse industries such as wastewater treatment, chemicals and petrochemicals also utilize these pumps for their operations. In this background, market players are always exploring new ways to produce better and more efficient pumps for the industry.

Julian Trascasa, Solutions & Marketing Vice-President, Industry Division at Grundfos says, “Normally customers chose solutions to solve a specific application duty in the most simple, reliable, energy efficient possible way, no matter if it is transferring energy, liquids or solids, or any other application. Centrifugal pumps have proven to be a flexible fit for purpose technology to meet a good balance between these requirements in the liquids movement landscape; they are also scalable in its manufacturing and relatively easy to maintain and retrofit.”

Types of centrifugal pumps

Centrifugal pumps are of different types and can be distinguished on various factors such as number of stages – single stage pumps and multi-stage pumps; their flow type – axial, radial and mixed flow; number of suctions – single and double; casing designs – Radial split and axial split; shaft orientation – vertical shaft and horizontal shaft; impeller position and so on.

What’s new in the market?

The Switzerland-based company Sulzer which specializes in pumping solutions has recently launched a closed impeller to its Ahlstar A end-suction single-stage range of pumps. Closed impellers are commonly used in water processes due to their high efficiency and good runnability. Also, a closed impeller offers a reliable option when processing flammable or toxic liquids, for instance in the chemical process industry, shares the company’s press release. Available with six different impellers, this range is built on the firm’s Ahlstar series of end-suction single-stage centrifugal pumps and each impeller has been designed for specific industrial applications. The release further adds that due to the modular construction, the need for spare parts is minimized. The pumps are available in various sizes and materials, the most common ones being ductile iron, duplex stainless steel, and super duplex.

Sulzer's Ahlstar A pumps are now available with a closed impeller.(Source: Sulzer) — Sulzer's Ahlstar A pumps are now available with a closed impeller.
(Source: Sulzer)

KSB, a prominent name in the industry for centrifugal pumps, has also added 19 new sizes to its existing MegaCPK type chemical pump series, thus, offering its customers a total of 55 sizes to choose from. According to the firm’s press release, the pumps are primarily characterized by their high output per size and their low energy consumption. Not only does this save electricity in operation, it also reduces the user’s initial investment costs.

It adds that the developers placed particular emphasis on good suction behavior with a low NPSH value in order to minimize the risk of cavitation, thus enabling smooth and stable pump operation even under difficult operating conditions. This ensures a high degree of reliability and improves the availability of an entire system. The release also mentions that the new seal chamber design allows the installation of gland packings, all common mechanical seals compliant with EN 12756, as well as a large number of cartridge-type mechanical seals. Fully confined casing gaskets and minimized axial thrust ensure long service lives. To control and monitor operation, the pumps can be equipped with speed control, vibration and bearing temperature measurement and operating point monitoring.

The MegaCPK series of standardised chemical pumps has been expanded to include 19 more sizes.(Source: KSB) — The MegaCPK series of standardised chemical pumps has been expanded to include 19 more sizes.
(Source: KSB)

Trascasa from Grundfos elaborates, “We have developed a full new range of electronically connected pumps and systems, dedicated to optimizing different applications in temperature control -cooling and heating-, water treatment and transfer, wash and clean, and complex applications moving solvents, aggressive liquids amongst others. We intend to keep investing in system integrated solutions with the centrifugal pump as the core of our offering, adding layers of integration and digitalization.”

Apart from this, Griswold Pump Company which has its headquarters in the USA offers the 811SP Series Self-Priming Centrifugal Pump. The solution is an addition to the firm’s chemical process centrifugal pumps and offers numerous features. According to Griswold’s press release, it offers ductile iron frame adapters to increase durability and safety, maximized oil capacity for improved heat transfer to extend bearing life, external clearance adjustment to maintain original flow, pressure and efficiency, heavy-duty shafts and bearings to minimize vibration and shaft deflection, oversized sight glass for quick and easy monitoring of oil level and condition, magnetic drain plug to collect contaminants and protect the pump, fully open impeller for better handling of solids and abrasives, and an extensive sealing options to maximize uptime.

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Available in eight different sizes with flow rates up to 1,300 gpm (295 m3/hr) and with the ability to operate in temperatures up to 500ºF (260ºC), the series is designed to meet ASME specifications and provide superior handling of corrosives and abrasives, states the release.

The demand for industrial pumps from numerous sectors is increasing and with the introduction of many new solutions in the market, it has given customers a lot to choose from. Against this scenario, we are certain that the global pump industry will be poised for growth.

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