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What is an Open Impeller Pump? Why Is It Preferred?

Open impeller pumps are practical and durable products used in applications where fluid transfer is required. Their operating principle is simple: the liquid is drawn in through the pump’s suction line and, thanks to the open impeller inside, it is propelled outward by centrifugal force. In this way, the liquid is transferred from inside the pump to the discharge line.

The most important feature of this type of pump is its ability to operate smoothly even when the liquid contains solid particles. Thanks to its open impeller design, substances like pulp, shavings, vegetable, or fruit pieces do not obstruct the flow of the liquid. In addition, being made entirely of stainless steel allows these pumps to be safely used in areas where hygiene is essential. Their durability and hygienic construction make open impeller pumps indispensable across various industries.

Where Are They Used?

Open impeller pumps are especially preferred in areas where hygiene is a priority. Here are some common application areas:

  • Drinking water filling facilities

  • Surface cleaning of food products (such as vegetables, fruits, and fish)

  • Industrial washing machines (dishwashers and laundry machines)

  • Beverage production facilities (especially for beverages with pulp)

  • Transfer of coolant water containing particles (in glass, can, and metal production plants)

  • Pumping of sewage and sludge water

  • Biodiesel production facilities

In short, they can be reliably used for a wide range of liquids, from clean water to wastewater.

Open impeller pumps are used extensively, from drinking water filling plants to beverage production lines, from vegetable and fruit washing processes to industrial washing machines. They are also preferred in the transfer of coolant waters in glass and metal production facilities, the pumping of sewage and sludge, and even in biodiesel production plants. Wherever there is a need to transport liquids containing particles or requiring hygiene, open impeller pumps provide a safe and long-lasting solution.

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Flexible Impeller Pumps: Precise and Efficient Liquid Transfer

For those seeking both efficiency and precision in industrial liquid transfer, flexible impeller pumps offer an excellent solution. Thanks to their self-priming design, wide range of applications, and compatibility with various fluid types, they are trusted across many industries.

What Is a Flexible Impeller Pump?

This type of pump features an eccentric-shaped housing and a rotor with flexible vanes. As the rotor turns, it creates a vacuum that enables the pump to draw liquid on its own. This eliminates the need for an additional suction system.

Working Principle

As the pump shaft rotates, the flexible vanes attached to the impeller bend upon contacting the narrower section of the housing. This bending creates a vacuum that draws liquid from the suction line. The fluid then moves through the pump body and is pushed out under pressure as the vanes bend again in the narrowing area. This continuous cycle enables a smooth and efficient liquid flow.

Application Areas

Food Industry:

  • Milk, yogurt, ayran, liquid eggs

  • Fruit juice, syrup, hot chocolate

  • Butter, olive oil, mayonnaise, ketchup

  • Wine, beer, vinegar, ice cream

Chemical Industry:

  • Paint, detergent

  • Acidic and alkaline solutions

  • Adhesives, wax, emulsions, ink

Cosmetics & Pharmaceuticals:

  • Shampoo, liquid soap

  • Creams, lotions

Why Are They Preferred?

  • Ideal for sensitive liquids

  • Hygienic and reliable design

  • Adaptable to various industries

  • Energy-efficient and easy to maintain

Flexible impeller pumps are a specialized pump technology developed to safely and hygienically transfer delicate products without damage. They offer a durable and efficient solution in the food, chemical, pharmaceutical, and cosmetics industries.