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In industrial fluid transportation systems, vertical centrifugal pumps are widely used in fields such as building water supply, heating, ventilation and air conditioning (HVAC), chemical processes, and municipal drainage due to their compact structure, convenient installation, and simple maintenance. However, many users encounter a common yet tricky problem during actual operation: the low rotational speed of vertical centrifugal pumps. This not only affects the pump's head and flow rate but also may lead to reduced system efficiency, increased energy consumption, and even equipment failures.

As a professional brand in the fluid transfer industry, Teffiko has always focused on the efficient operation of industrial pumps. In the field of industrial fluid transfer, multistage centrifugal pumps are favored for their ability to provide high head and high efficiency, and their working principle follows the general laws of centrifugal pumps. However, many on-site operators often have questions: Why is it imperative to bleed air before starting a multistage pump? What are the risks of skipping this step? I will deeply analyze this seemingly simple yet crucial operational specification from four dimensions: physical mechanism, equipment structure, operational safety, and actual working conditions.

In industrial process systems, the shutdown of a centrifugal pump does not mean the end of maintenance work—on the contrary, correct operation and maintenance after shutdown are often the key to ensuring the long-term stable operation of the equipment. Whether it is planned maintenance, seasonal shutdown, or emergency shutdown due to failure, neglecting the post-shutdown processing steps can easily lead to serious problems such as corrosion, crystallization blockage, shaft bending, seal failure, and even pump body freezing and cracking.

As the curtain of 2026 slowly rises, Teffiko, the Italian expert in industrial fluid power, is embarking on a new chapter in the global industrial landscape with its outstanding centrifugal pump technology. Upholding years of exquisite craftsmanship and unremitting innovation, Teffiko continues to consolidate its position in the industrial pump sector, providing powerful momentum for key industries worldwide.

In fields such as industrial fluid transportation, municipal water supply, and water conservancy projects, pumps serve as core fluid machinery. Their selection directly impacts system operational efficiency, energy consumption costs, and stability. Among them, multistage pumps and single-stage pumps are the two most widely used categories, and many users often face the dilemma of "which one to choose" during selection. First, here is a core conclusion: The key advantages of single-stage pumps lie in their simple structure, low cost, and convenient maintenance, making them suitable for scenarios requiring low head and large flow rates. In contrast, multistage pumps achieve high head through series-connected impellers, making them ideal for high-pressure and long-distance transportation needs. Below, we will elaborate on each aspect to help you understand the underlying logic.

In industries such as food, pharmaceuticals, cosmetics, and fine chemicals, glycerin, as a high-value, high-viscosity, and hygroscopic polyol medium, is widely used as a humectant, solvent, sweetener, or reaction intermediate. However, glycerin's physical properties (viscosity up to 1400 cP at room temperature) impose strict requirements on transportation equipment—ordinary centrifugal pumps are prone to slipping, cavitation, unstable flow, and other issues. So, what is the preferred pump for transporting glycerin? This article will systematically explain the scientific selection strategy for glycerin transfer pumps.