Flexible impeller pump for pumping viscous and sensitive liquids

A flexible impeller pump is a versatile pump.

Our flexible impeller pumps can be fitted with impellers made from different materials, which makes them suitable for many different media. A flexible impeller pump can be selected with a metal body, where the material options are stainless steel or acid-resistant stainless steel.

For some applications and media, a metal option is not the best choice. In these cases, our plastic flexible impeller pumps are a good alternative. The pumping principle of a flexible impeller pump is positive displacement, making it very gentle on the pumped medium. This helps prevent unwanted foaming. A flexible impeller pump can also pump media that contain solids.

A flexible impeller pump is designed especially for challenging pumping needs where traditional pumps may not perform well enough. In the food industry, it is an ideal solution for pumping wines, beers, fruit pulps, juices and honey, for example. The pump’s gentle operation helps ensure that the taste, structure and quality of the products remain unchanged throughout the process.

Flexible impeller pumps are also highly useful in the handling of cosmetics and hygiene products. They can transfer viscous and sensitive media, such as creams, emulsions and liquid soaps, without affecting their composition. In the chemical industry, a flexible impeller pump is highly suitable for transferring paints, latexes, waxes and oils, as its structure can also handle challenging media and liquids containing solids.

Examples of media pumped with flexible impeller pumps include:

• Wines
• Fruit pulps
• Beers
• Juices
• Honey
• Syrups
• Waxes
• Emulsions
• Latexes
• Paints
• Inks
• Oils
• Liquid soaps
• Cleaning agents
• Creams
• Shampoos
• Etc.

The greatest advantage of a flexible impeller pump is its gentle operation, which protects the structure of the pumped medium and helps prevent damage. The positive displacement pumping principle ensures steady flow without pressure shocks, which is especially important when handling food products such as wines, juices and honey. Gentle operation also helps prevent foaming, which is critical for many media, such as syrups and emulsions.
In the cosmetics industry, the flexible impeller pump is valued for its ability to handle sensitive media, such as creams, shampoos and liquid soaps, while preserving their original composition. This helps ensure that product quality remains consistent throughout the pumping process. At the same time, the pump’s steady operation reduces waste and improves production efficiency.

A flexible impeller pump is a highly versatile device suitable for a wide range of applications. Its self-priming design allows liquid to be pumped even from a dry state without separate filling, making installation and use easier. In addition, a flexible impeller pump can pump in both directions, making it a flexible solution for filling and emptying applications, for example.
Material options further increase the pump’s versatility. Metal-bodied models, such as pumps made from stainless steel or acid-resistant stainless steel, provide durability for demanding applications such as the chemical industry. Plastic models are especially well suited for handling certain chemicals and sensitive media, such as cosmetic products or food products.

BPI-Chempump offers two main series of flexible impeller pumps for different needs. EP series flexible impeller pumps are designed especially for pumping viscous and sensitive liquids. These pumps have a maximum flow rate of 72 m³/h and a head of up to 32 metres, making them efficient even in demanding applications.
VMA series flexible impeller pumps are lighter plastic models that are especially well suited for filling and emptying use. These pumps have a maximum flow rate of 25 m³/h and a head of 25 metres. Both series provide steady and reliable pumping without pulsation dampeners, making them simple and efficient to use.

A flexible impeller pump is not only a technically advanced solution, but also an economically sensible choice. Its simple structure and carefully selected materials ensure a long service life and low maintenance costs. The pump is designed to withstand demanding conditions, which gives it a significantly longer service life than many other pump types.
The steady pumping process reduces waste and helps ensure that product quality remains high throughout the process. This makes the flexible impeller pump an ideal choice for demanding production processes where efficiency and product quality are key priorities.