Vertical Pumps: The Main Features

In the diverse landscape of pumps, vertical pumps represent a sophisticated and versatile technological solution, capable of meeting the most critical needs, such as pumping abrasive and acidic liquids, particularly those derived from industrial processes. In this article, we will examine the main strengths and limitations of these pumps, with a focus on the solutions offered by CDR Pump for more complex applications.

Advantages of vertical pumps

Vertical pumps offer numerous advantages that make them a preferred choice in many applications, not just those in industry:

• Thanks to their compact design, vertical pumps require reduced installation space. This feature is particularly useful in systems where space is a limiting factor. 
• L’iInstallation vertical pumps are generally Simple and fast, reducing the time and costs associated with system startup. Their structure allows for direct mounting, often without the need for complex support structures.
• It is important to consider that vertical pumps represent an alternative to submersible pumps for collection tanks. Although submersible pumps are compact and efficient, they have the drawback of not being usable for corrosive fluids without the use of special materials like Hastelloy. In these cases, vertical pumps made of PVDF and PP emerge as a valid solution. These pumps, designed to withstand adverse chemical conditions, offer a robust and long-lasting solution, overcoming the limitations of submersible pumps and ensuring adequate resistance to corrosive fluids.
• In the version CVN of the pumps, A mechanical seal is not planned.a, since the process fluid itself is used for flushing the bushings. This configuration allows the system to remain simple and efficient, using the circulating fluid for adequate lubrication and cooling of the bushings without the need for complex additional components. However, for specific applications requiring additional protection or more precise control, the possibility of integrating external flushing systems. 

CDR vertical pumps for critical applications

CDR Pompe is a company specializing in the design and manufacture of centrifugal pumps—both vertical and horizontal—engineered for the most demanding applications. Our product line includes pump magnetic drag coated liner and plastic, Magnetic drive pumps made of steel e mechanical seal pump. 

All pumps are made with high-quality materials such as stainless steel, PP (polypropylene), and PVDF (polyvinylidene fluoride), to ensure strength and durability even in aggressive environments.

We treat vertical pumps as “custom pumps,” meaning they are designed specifically to meet the needs of a very specific market niche. 

This specialization allows us to provide highly customized solutions capable of addressing the most complex challenges of modern industrial applications.

Our production of vertical pumps

• CVNthe CVN line Include vertical shaft centrifugal pumps, made of PP or PVDF thermoplastic material for parts in contact with the process liquid. They are installed on a metal base plate, lined on the tank side, and coupled to the motor via an elastic coupling. Compared to the competition, the motor support is made of cast iron and guarantees 24/7 operation. They are suitable for applications requiring high chemical resistance. Available in self-flushing or external flushing versions.
• TMVNthe single-stage centrifugal pumps magnetic drive, custom-designed for the client. Made of PVDF for the parts in contact with the fluid, they are particularly suitable for extremely hazardous applications and with low NPSH Positive Suction Head.

Additional factors to consider

Speaking of vertical pumps, it's useful to highlight some distinctive features of our production. In particular, the TMVN pump line uses a magnetic drive system that ensures contactless operation between moving parts, reducing wear and increasing system reliability and longevity. This approach also minimizes the risk of leaks, making TMVN pumps particularly suitable for sensitive fluids or critical environments.

On the other hand, in the CVN line, the self-flushing system uses the process fluid itself to maintain lubrication and cooling of the bushings, improving operational efficiency and reducing the need for complex external components. This system is designed to ensure optimal performance even under demanding operating conditions.

To help you choose the pump best suited to the specific needs of your industry and application, the CDR Pompe team is here to assist you. Contact us to receive further information and personalized advice. We will be happy to provide you with a prompt response and tailor-made solutions for your needs.

Frequently Asked Questions

What are the advantages of vertical pumps compared to horizontal pumps in systems with limited space?

Vertical pumps have a compact design and require less space for installation, making them useful where space is limited. Installation is generally simple and quick, with direct assembly and often without complex support structures. This reduces the time and cost of starting up the system.

Why use a vertical pump made of PVDF or PP instead of a submersible pump in a recovery tank corrosive liquids?

A vertical pump made of PVDF or PP withstands corrosive fluids without special materials, while a submersible one in these cases requires materials such as Hastelloy. Submersibles are compact and efficient, but not suitable for corrosive environments without such alloys. Plastic vertical pumps therefore offer a robust and durable solution for recovery tanks.

How does a CVN vertical pump work without mechanical seal self-lubrication of the pistons?

In the CVN vertical pump there is no need for additional components mechanical seal because the process fluid flows directly through the pistons, ensuring lubrication and cooling without additional complex components. For applications that require more protection or more precise control, the CVN is also available with external flow.

What materials and components are used in the CVN vertical centrifugal pump CDR Pompe?

The CVN is a vertical shaft centrifugal pump with parts in contact with the liquid made of PP or PVDF. It is mounted on a metal base plate coated on the tank side and connected to the motor with an elastic joint. The cast-iron motor support allows 24/7 operation and is suitable for applications with high chemical resistance.

When is it advisable to choose a vertical pump with magnetic drive TMVN for hazardous fluids?

The TMVN is suitable for extremely hazardous or sensitive fluids and with low NPSH. It is a magnetic drive single-stage centrifugal pump in PVDF in the wet parts and is designed to be customized. It magnetic drive eliminates direct contact between moving parts, reducing wear and the risk of leakage.

What is meant by custom pumps in the production of vertical pumps CDR Pompe?

Custom pumps are vertical pumps designed specifically for the needs of a very specific market niche. It thus CDR Pompe treats vertical pumps by manufacturing them in stainless steel, PP or PVDF. This allows highly customized solutions for complex industrial applications, with resistance and durability even in aggressive environments.