(Practical dry goods that ordinary people can understand)

Why is your chemical pump always "unsuitable"? The high-performance "centrifugal pump" bought for 150,000 yuan leaked and stopped working in less than 3 months? The repair cost was 80,000 yuan. What's the problem? Is it really the quality of the manufacturer? It's not necessarily the case. It is very likely that the problem is in the selection process. The parameters of the chemical pump and the actual working conditions are "incompatible". Choosing the wrong model of chemical pump will waste money at best and cause safety accidents at worst!

 

 

Misunderstanding 1: Only look at the flow and head, and ignore everything else

 

 

 

Many users often rely on experience to estimate the flow and head of chemical pumps, but if they do not fully consider the actual situation, it may affect the matching of pump performance. For example, in the case of high-viscosity liquids, the starting torque requirement is high. If the power is not adjusted in time during selection, it may cause motor overload or pump damage.

 

 

When choosing a chemical pump, you must ask these questions:

- Medium composition (solid content? Corrosive? Flammable and explosive? Acid, alkali, salt, toxic and sticky, ask everything)

- Working temperature (normal temperature? High temperature? Low temperature? Low temperature needs insulation, high temperature prevents cavitation)

- Flow rate and head (through actual measurement or calculation with professional software, ensure that the performance curve of the pump matches the actual working conditions)

- Running time (continuous operation or intermittent use?)

- Installation environment (indoor? Outdoor? Explosion-proof area?)

 

 

Misunderstanding 2: Not fully considering pipeline pressure drop and other technical parameters:

 

 

Because of the mismatch of pipelines, the actual performance of chemical pumps is not as expected. In addition to the chemical pumps themselves, you should also pay attention to the length, diameter, pressure drop, etc. of the pipeline when selecting to ensure a comprehensive selection.

 

 

Misunderstanding 3: Ignoring daily maintenance costs

 

 

 

 

You will understand after doing the math:

 

 

 

While considering the initial investment, you also need to consider the later maintenance and operation costs of the equipment. You need to comprehensively evaluate the costs before and after, and choose a chemical pump with high cost performance.

 

 

Misunderstanding 4: Not paying attention to the details of chemical pump selection

 

 

 

The last thing to consider is the energy consumption requirements under environmental protection. Exceeding the energy consumption standard is not allowed in some areas, so the product must meet the latest GB 19762 energy efficiency standard. Secondly, when the chemical pump is repaired, can the manufacturer provide a 10-year spare parts supply commitment? If there is a need for transformation, can it adapt to the factory's intelligent transformation needs (such as adding sensors)? How long is the warranty period? How long is the delivery period? What should I do if the performance does not meet the standard? These questions must be confirmed with the manufacturer one by one

 

 

According to the above methods, the selection misunderstandings of chemical pumps can basically be avoided.

In the chemical industry, transferring corrosive liquids presents significant challenges. Chemical transfer pumps, as critical equipment, must possess excellent corrosion resistance to ensure system safety and operational stability. Selecting the right material is crucial for extending the pump's lifespan and improving production efficiency. Today, we will explore the common materials used in corrosion-resistant chemical transfer pumps and their applications.

1. Stainless Steel

Stainless steel (Stainless Steel Chemical Pumps)is one of the most commonly used materials in corrosion-resistant chemical transfer pumps. It offers excellent corrosion resistance, particularly when handling weak acids, weak alkalis, and other mildly corrosive liquids. Common stainless steel grades include 304, 316, and 316L, with 316L offering superior intergranular corrosion resistance due to its lower carbon content. Stainless steel pumps are suitable for industries such as chemicals, food processing, and pharmaceuticals, where corrosive media are frequently encountered.

2. High-Nickel Alloys

High-nickel alloys, such as Hastelloy and Inconel, perform exceptionally well in extreme corrosive environments. These materials provide outstanding resistance when handling strong acids, strong alkalis, and chloride-containing media. High-nickel alloy pumps are typically used in chemical processes requiring high corrosion resistance, such as the transfer of concentrated sulfuric acid, hydrofluoric acid, and phosphoric acid.

3. Plastic Materials

With advancements in technology, corrosion-resistant plastic materials (Plastic Chemical Transfer Pumps) are increasingly used in chemical pumps. Plastics like polyvinylidene fluoride (PVDF) and polytetrafluoroethylene (PTFE) are highly valued for their excellent chemical resistance, especially in high-purity chemical environments. Plastic pumps are commonly used to transfer highly corrosive, strong oxidizing media, such as strong acids, strong alkalis, and organic solvents.

4. Silicon Carbide and Ceramic Materials

Silicon carbide and ceramic materials are important choices in chemical pumps due to their superior wear resistance and corrosion resistance. These materials are particularly effective in reducing wear and extending pump life when transferring corrosive liquids containing solid particles. Silicon carbide pumps are mainly used for transferring high-hardness, highly corrosive fluids, such as concentrated acid and alkali solutions, and suspensions.

5. Rubber-Lined Pumps

For transferring strong acids, strong alkalis, or corrosive media containing particles, rubber-lined pumps offer an economical and effective solution. The pump body is lined with corrosion-resistant rubber, such as neoprene or fluoroelastomer, effectively isolating the media from contact with the metal pump body and preventing corrosion damage. Rubber-lined pumps are widely used in mining, chemical processing, electroplating, and other industries.

The material selection for corrosion-resistant chemical transfer pumps directly impacts the durability of the equipment and the safety of production. When purchasing, it is essential to choose the most suitable material based on factors such as the chemical nature of the transfer medium, operating temperature, and pressure conditions, to ensure optimal pump performance in specific applications. Our company is dedicated to providing high-quality corrosion-resistant chemical pumps, helping our customers achieve efficient and safe transfer solutions in demanding chemical environments.

If you are interested in changyupump products or have any questions, please feel free to contact our professional team. We are here to serve you.