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  • What are the advantages and disadvantages of high voltage motors compared to low voltage motors?

    What are the advantages and disadvantages of high voltage motors compared to low voltage motors?

    What are the advantages and disadvantages of high voltage motors compared to low voltage motors? For AC motors, high voltage motors with rated voltages of 1000V and above; low voltage motors of less than 1000V (the limit in some materials is 1140V). For DC motors, high voltage motors with rated ...
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  • Important Factors When Selecting Chemical Pumps

    Important Factors When Selecting Chemical Pumps

    Following are the important factors taken in to consideration while selection chemical pumps : 1. Capacity and discharge head This expected in usual terms Suction process pump may be required to lift the liquid from a lower level or liquid coming under pressure at the su...
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  • How to caculate a deep well pump head?

    How to caculate a deep well pump head?

    How to caculate a deep well pump head? A suitable pump is selected suitably based on not only capacity but also head. So what is the pump head? This is the vertical distance that you are able to pump the liquid. Say your pump is rated for a maximum head of 100 feet, this...
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  • Top 4 causes of vibration of centrifugal pumps

    Top 4 causes of vibration of centrifugal pumps

    Top 4 causes of vibration of centrifugal pumps 1. Shaft A pump with a long shaft is prone to insufficient shaft stiffness, too large deflection, and poor straightness of the shaft system, causing friction between the moving member (drive shaft) and the static member (sliding bearing or ring) to...
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  • The structure and type of metering pump

    The structure and type of metering pump

    The structure and type of metering pump The metering pump is composed of three parts: the transmission base part, the pump head part and the motor. The structure mainly includes a driving end and a hydraulic end. According to the different hydraulic end, it can be divided into: plunger type, ...
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  • What is the difference between Soft Seal Butterfly Valve & Hard Seal Butterfly Valve?

    What is the difference between Soft Seal Butterfly Valve & Hard Seal Butterfly Valve?

    Hard Sealing Butterfly Valve Butterfly valve hard seal means that both sides of the seal pair are made of metal material or other hard materials. This seal has poor sealing performance, but is resistant to high temperatures, abrasion and mechanical properties. Such as: steel + steel; steel + cop...
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  • Different Grey Cast Iron Brands Comparision

    Different Grey Cast Iron Brands Comparision

     As we all known there’s different brand standards of grey cast iron material. In order to for your easy compare, MIMO provide a format as below:   * Above is listed some brands for reference, if any query welcome to contact MIMO.
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  • What Should We Do During Pump Operation?

    What Should We Do During Pump Operation?

    What Should We Do During Pump Operation? 1. Stuffing Box Make sure that the stuffing box has been properly packed (see sub-section) and above all that the gland has not been tightened too firmly as, otherwise, damage will occur to the packing and the shaft sleeve. See to it that it is not tighte...
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  • Ten Tips About Pump Maintenance

    Ten Tips About Pump Maintenance

    Ten Tips About Pump Maintenance Even smooth running of the pump rotor is essential When delivering from a tank the liquid level must always be well above inlet opening The performance as indicated on the driver nameplate must not be exceeded The stuffing box must always drip slightly to remove...
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  • ISO STANDARD END SUCTION PUMP FITTED WITH OIL LUBRICATED BEARINGS

    ISO STANDARD END SUCTION PUMP FITTED WITH OIL LUBRICATED BEARINGS

    Pump Lubrication 1. PUMPS FITTED WITH OIL LUBRICATED BEARINGS 1.1 Oil Specification HOUSING  MODULE OIL LUBE OIL SPECIFICATION QTY(ml) Preferred oJSs are those that have non foaming properties. Typicatfy, twbsne of hyctfauiic osts wotitct be stiitable. Viscosity of SAE20 to SAE30 (ISO V...
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  • Centrifugal pump impeller, do you know these 5 repair methods?

    Centrifugal pump impeller, do you know these 5 repair methods?

    Centrifugal pump impeller, do you know these 5 repair methods? The centrifugal pump will wear and corrode gradually due to the sediment, the erosion of the water flow and the corrosion of the medium. The surface of the blade often forms grooves or streaks, or is damaged by cavitation, and the le...
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  • Ten words to solve equipment oil spill

    Ten words to solve equipment oil spill

    Ten words to solve equipment oil spill. First, equipment oil leakage is generally divided into three types: oil leakage, oil drop, and oil flow: (1) Oil leakage. For a fixed connection, a drop of oil every half hour is oil leakage. For the part where the activity is connected, one drop of oil e...
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  • Pump cavitation and suction stroke relations

    Pump cavitation and suction stroke relations

    Pump users generally require a pump suction (high vertical difference from the suction level to the center of the pump inlet), but there is no term for suction in domestic pump standards and specifications. The term associated with it is the cavitation margin, which is approximately equal to 10 ...
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  • What is the best solution for cable water intake?

    What is the best solution for cable water intake?

    Cable water intake is also a very common power cable failure. How do you solve the problem when the cable enters the water? It is a cumbersome thing to have water in the cable. So far, there is no particularly effective way to solve it, either to make a middle joint or to change the cable. In vi...
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  • Water cooled diesel engine VS Air cooled diesel engine

    Water cooled diesel engine VS Air cooled diesel engine

      Yes this is a water cooled engine and air cooled engine the difference between the two engines are.   a. A water cooled engine has a water pump fitted which circulates water through the engine and the attached and the attached radiator which reduces the water temperature by passing ai...
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  • Where should the check valve be installed?

    Where should the check valve be installed?

    Today we will discuss the check valve installation position. So how is the installation position of the check valve determined? What is the difference between the pre-pump installation and the post-pump installation check valve, and where is the pump front installation suitable for? Check valves ...
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  • Dynamic balancing of centrifugal pump impeller

    Dynamic balancing of centrifugal pump impeller

    The impeller is the main rotating component which normally has vanes to impart and direct the centrifugal force to the liquid. Usually, slurry pump impellers have a plain or a Francis type vane. Vibration caused by mass imbalance in...
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  • How to do the pump maintenance work in winter?

    How to do the pump maintenance work in winter?

      As the winter temperature decreases, the water pump in many occasions is stopped due to the temperature. At this time, the maintenance and maintenance of the pump becomes more important. The following is a small series to share with you the maintenance and maintenance methods of the winter pump...
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  • Slurry Pump Questionaire for select a suitable slurry pump

    Slurry Pump Questionaire for select a suitable slurry pump

     MIMO FLOW CONTROL CO.,LTD. Slurry Pump Questionaire Complete as much information below as possible.Boxes marked “REQUIRED” must be filled out in order to provide an accurate pump selection. Contact Information Company   Contact Person   Email   Phone   Applic...
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  • Pre-commissioning Check list  Receiving the pumps

    Pre-commissioning Check list Receiving the pumps

    Pre-commissioning Check list Receiving the goods Upon arrival it is always good practice to check the condition of the packaging to make sure that the goods have arrived in tact and complete. If the package has arrived damaged or open, take photos of the damaged areas and the opened package as pr...
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  • Submerged Motor Pumps Offer Reliability for Downstream Users

    Submerged Motor Pumps Offer Reliability for Downstream Users

    Submerged Motor Pumps Offer Reliability for Downstream Users Conventional centrifugal pump units couple a pump casing to an external electric motor. This conventional pump should have a shaft seal—often two seals—to allow the shaft to extend outside of the pump casing. Seals are susceptible to fa...
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  • Why is the motor always turning clockwise?

    Why is the motor always turning clockwise?

      Counterclockwise and clockwise, which direction to look at, this is just a matter of looking at the direction, from this direction is clockwise from the other direction is counterclockwise, no one specifies that the motor is always clockwise, with three-phase asynchronous For example, if the mo...
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  • What Does a Water Well Submersible Pump Check Valve Do and Why It’s Important?

    What Does a Water Well Submersible Pump Check Valve Do and Why It’s Important?

     A Check Valve Is Required For A Water Well Submersible Pump It’s important to understand the components that make up your homes water system in order to maintain it and keep clean fresh water flowing safely into your home. Along with annual testing to ensure the health of your water, annua...
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  • Do you know the Stainless Steel materials?

    Do you know the Stainless Steel materials?

    Stainless steel definition  A high-alloy steel that resists corrosion in air or chemically corrosive media. Stainless steel has an aesthetically pleasing surface and good corrosion resistance. It does not require surface treatment such as plating to give full surface properties to stainless stee...
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  • MATERIAL CONVERSION TABLE OF DIFFERENT STANDARD

    MATERIAL CONVERSION TABLE OF DIFFERENT STANDARD

      1. Gray Iron Castings (KS D 4301) KS ASTM DIN JIS Tensile Strength HB (KG-F/mm2) GC150 A48-CL20 GG15 FC150 19 and above 241 and below (ex-GC15) 17 and above 223 and below 15 and above 212 and below 13 and above 201 and below GC200 A48-CL30 GG20 FC200 24 and above 255 ...
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  • High Chromium PK Cast Iron

    High Chromium PK Cast Iron

    High chromium cast iron is the short of high chromium white cast irons, Which is an excellent performance and highly wear resistant material. Its wear resistance is much higher than the alloy steel, and much higher than the general white cast iron toughness, strength, and it also has good resist...
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  • Flange assembly, connection and maintenance

    Flange assembly, connection and maintenance

      1 Flange Assembly       1) Before assembling the flange, the flange surface, especially the sealing surface, must be cleaned.       2) When assembling the flat welding flange, the pipe end should be inserted into the inner diameter of the flange by 2/3, and then the fla...
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  • How to select a suitable pump

    How to select a suitable pump

    A pump is a device that moves fluids(liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps. So the chiefly three factor for select a suitable...
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  • Self-priming Sewage Pump Use Conditions & Troubleshooting Methods

    Self-priming Sewage Pump Use Conditions & Troubleshooting Methods

    1.ZW self-priming sewage pump construction and advantages ZW self-priming sewage pump mainly has inlet nozzle, check valve, outlet nozzle, pump body, impeller, mechanical seal, bearing seat and pump shaft. The double-bladed impeller structure improves the ability to pass dirt. The mechanical seal...
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  • How To Select The Best Slurry Pump

    How To Select The Best Slurry Pump

    It should go without saying that pumping slurry isn’t quite as easy as pumping water. Depending on the type of slurry, there are many variables that go into selecting the proper pump for slurry. There is no formula or cut-and-dry answer as to what the optimal slurry pump design is. You must...
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  • What is Balance Disc?

    What is Balance Disc?

      In any centrifugal pump, each impeller tends to produces some amount of thrust because of different pressures and different geometries on the two sides of the impeller. In a high pressure multi-stage pump the number of impellers is high, thus the net thrust would be large unless something ...
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  • Impeller Tyeps of Centrifugal Pump

    Impeller Tyeps of Centrifugal Pump

    There are three types impeller of centrifugal pumps: - Closed impeller - Semi open  impeller -  Open impeller And semi open impeller could be front semi open and back semi open.   Biggest difference of there impeller is Max. particle size. Semi open and open impeller are suitable for big si...
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  • Typical Installations for MAH Horizontal Slurry Pump

    Typical Installations for MAH Horizontal Slurry Pump

      1. There are several types of permanent pump/ foundation installations in use. Those pictured above are typical. 2. If grout is used, top of concrete should be left rough to provide a good bonding surface. 3. Foundation should slope away from pump to prevent liquid from pooling.      
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  • Pump in Series Connection & Pump in Parallel Connection

    Pump in Series Connection & Pump in Parallel Connection

    For a pump system, sometimes one pump can not reach the required capacity and head. There may let pumps in series connection or parallel connection.    Series connection: the first pump outlet connect the second pump inlet, the final system head is all the pump head in total minus the pipe l...
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  • How To Calculate the “Pump Head”

    How To Calculate the “Pump Head”

    The static head of a pump is the maximum height (pressure) it can deliver. The capability of the pump at a certain RPM can be read from its Q-H curve (flow vs. height).(https://en.wikipedia.org/) To calculate the pump head, we will using the following formula: Pump Head = Pipe Loss x 1.1 + Vertic...
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  • How to Calculate “Motor Power” for Pump

    How to Calculate “Motor Power” for Pump

    In order to know the pump driver power, we should calculate the pump shaft power firstly. Calculate shaft pump should use below formulas: Shaft Power = Pump capacity (L/S) x Pump Head (m) / 102 / Pump Efficiency  -   Pump capacity(Flow rate)Unit should be L/S: liter per second -   Pump head unit...
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