The transportation of organic solvents and adhesives requires the selection of pump type ; based on specific properties. The following are common schemes:Centrifugal pumpIt is suitable for low-viscosity organic solvents without solid particles (such as gasoline and benzene), with a simple structure and stable flow rate. ;Positive displacement pumpGear pump: Suitable for medium-viscosity adhesives, such as polyurethane glue and silicone. ;Screw pump: It can convey high-viscosity

To level the double diaphragm coupling of a chemical centrifugal pump, it is necessary to measure the non-concentricity and non-parallelism,and adjust the thickness of the gasket under the motor or pump support ;. The specific steps are as follows:Measurement and Analysistool selection ; :High-precision equipment (such as dial indicators, laser aligners) : Double diaphragm couplings suitable for high-speed and rigid connections, capable of measuring radial and angular displacements.

Many foreign customers, especially new ones, do not know how to accurately operate the newly purchased ATACH brand centrifugal pump before startup.Now we will introduce the most crucial point, startup exhaust, in detail as follows.If you still have any questions, you can contact our sales staff for more detailed understanding and confirmation to ensure that all the procedures before startup are in place.After receiving the new ATACH brand centrifugal pump, the exhaust operation should be carried

In the face of the challenge of abrasive media, the selection of impeller material for sewage sludge pumps needs to take into account wear resistance, corrosion resistance and economy.The following are specific suggestions:Key points for material selectionstainless steel ; : 304 stainless steel has excellent corrosion resistance and impact resistance, and is suitable for treating sewage sludge containing corrosive components.bronze ; : performs well in salt water or highly corrosive

The inlet and outlet of chemical pumps usually require the installation of control valves, check valves, pressure gauges and other instrument valves ;.The specific configuration is adjusted according to the system requirements and the type of self priming pumps.Configuration of imported valvesStop valve ; : It is used to regulate flow or cut off water flow, facilitating maintenance. ;filter ; : Installed after the inlet valve, it filters impurities and protects the pump b

The core difference between multi-stage pumps and single-stage pumps lies in the number of impellers and the applicable scenarios ;.The following is a specific comparison:Structural differencesSingle-stage pump: With only one impeller, it features a simple structure, small size, light weight and convenient maintenance. ;Multistage pumps: Two or more impellers are connected in series, the pump body is combined in sections, the number of components increases by 30% to 50%, and the main

Vertical pipeline centrifugal pumps do have a suction lift ;.The suction lift refers to the vertical distance ; by which a water pump can draw water from a lower place to a higher place, and is usually measured in meters ;.For vertical pipeline centrifugal pumps, the suction lift range is generally around 5 to 8 meters ;.This value is influenced by a variety of factors, including atmospheric pressure, liquid properties, pipeline resistance, and pump body structure, etc.In

The selection of the contact surface material for the mechanical seal of a chemical pump needs to be comprehensively judged based on the characteristics of the medium, temperature, pressure and other conditions. The main differences between alloys (such as stainless steel) and silicon carbide are as follows:Comparison of material propertiesAlloys (such as 316 stainless steel) : Advantages: Good corrosion resistance, high mechanical strength, and relatively low cost.Disadvantages: Relatively low

The types of flanges used with chemical pumps mainly include plate type flat welding flanges, necked flat welding flanges, necked butt welding flanges, socket welding flanges, threaded flanges, and loose flanges (such as loose butt welding ring flanges and flat welding ring loose flanges), etc. The specific classification is based on different systems such as chemical industry standards (HG), national standards (GB), and mechanical industry standards (JB).Main types and characteristicsplate flat

Regarding the specific types of ATACH pump couplings, common types of couplings include gear couplings, elastic membrane couplings, elastic pin couplings, and plum blossom-shaped elastic couplings, etc. ;Common types and characteristics of couplingsgear coupling ;Advantages ; : Strong load-bearing capacity, high compensation for relative offset of two shafts, and compact structure.Disadvantages: It requires good lubrication and sealing, and the maintenance cost is relatively hi

The selection of bearing types for the cantilever centrifugal pump bearing box should be comprehensively considered based on factors such as the pump's load characteristics, rotational speed, and working environment. Common choices include deep groove ball bearings, double-row angular contact ball bearings, and single-row angular contact ball bearings.Deep groove ball bearingApplicable scenarios ; : Small to medium-sized cantilever centrifugal pumps, suitable for working conditions whe

Q: When do you choose 2900 RPM centrifugal pumps and when do you choose 1450 RPM centrifugal pumps
A: The most commonly used pump seals are mechanical seals and packing seals.

Q: When do you choose 2900 RPM centrifugal pumps and when do you choose 1450 RPM centrifugal pumps?
A: Industrial pump most will choose 2900r.p.m pump, 1450r.p.m or lower speed pump pump body volume is relatively large, generally used for low head large flow conditions, due to the low speed of the pump, for easy wear, worry about crystalline particles are broken materials can be considered. With small flow and large head, it is recommended to use 2900r.p.m pump, after all, the investment will be much lower.

Q: Why do Attec brand centrifugal pumps need to be filled with water and vented before initial start-up?
A:, resulting in the destruction of the pump equipment. Therefore, the manual of the centrifugal pump will first indicate: no idling without liquid. To put it simply: the pump is to remove the air inside the impeller, and the centrifugal pump can work.

Q: Why is the pump with high lift easy to burn the motor with low lift, not the larger the lift, the better?
A: This problem is the most encountered in our actual customer process, the pump head selection mainly depends on the form of the pump. If it is a positive displacement type, such as piston pump, screw pump, scraper vane pump gear pump, diaphragm pump, the lift exceeds the rated value, the pressure increases, the pump load increases, and the motor is easy to burn; For speed pumps, such as centrifugal pumps, the situation is just the opposite, low head but make the pump flow is large, the load is increased, and the pump is easy to burn. Therefore, before the large centrifugal pump starts, the outlet valve should be closed, and the operation is gradually opened.

Q: Centrifugal pump uses packing seal type, how much dripping water is normal?


A: The amount of dripping water at the packing seal of the centrifugal pump is determined by the diameter of the pump shaft, and the general requirements can not drop into a linear shape, and 60 drops per minute is appropriate. However, in actual operation and use, if it is to transport clean water, the dripping water can be appropriately relaxed, and the dripping water is diverted to the sewer to prevent corrosion of the centrifugal pump suspension and bearing box.

Q: What are the advantages and disadvantages of direct coupling type and coupling type for horizontal centrifugal pump?



A:The advantages of the direct-connected horizontal centrifugal pump: the direct-connected horizontal centrifugal pump has a compact structure, a small footprint, and the concentricity of the motor shaft and the pump shaft does not need to be adjusted during installation because the motor shaft is lengthened.

Q: Whether the stainless steel pump is made of authentic 304 stainless steel, can it be determined with a magnet?







A: Whether the flow parts of the stainless steel pump are authentic 304 or 316 material, it can not be accurately determined by whether the magnet is attracted, on the contrary, the 202 series stainless steel material that is worse than 304 sometimes does not attract magnets. The most accurate and effective way is to use a spectrometer test, which can accurately and effectively see the elements and content.

Q: Can the authentic 304 stainless steel pump rust?



Answer: Can not arbitrarily say that stainless steel 304 material pump will not rust, depending on the situation. Because stainless steel material contains chromium, nickel, titanium and so on. Chromium and nickel elements have anti-rust function, which forms a protective film-blunt film to prevent stainless steel from rusting.

Under normal circumstances, as long as the film is not damaged, cracked or contaminated by impurities, stainless steel will not rust. However, if the use or maintenance is not proper, the passivation film is damaged, and the stainless steel will rust.

Q: The caliber of the pump is inches, how many millimeters does it correspond to?



A: In the actual selection, the corresponding table of the caliber of the pump is as follows:

1 inch =25 mm 1.2 inch =32mm 1.5 inch =40mm 2 inch =50mm 2.5 inch =65mm 3 inch =80mm

4 inches =100mm 5 inches =125mm 6 inches =150mm 8 inches =200mm 10 inches =250mm 12 inches =300mm

By analogy