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  • Impeller trimming changes in performance

    Impeller trimming changes in performance

    Impeller trimming changes in performance Impeller trimming means the reduction of the impeller diameter from maximum, usually to adjust the pump performance to a required duty point. Performance curves for centrifugal pumps usually detail the performance for a number of impeller diameters betwe...
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  • Buying tips for bellows sealed valves

    Buying tips for bellows sealed valves

    Buying tips for bellows sealed valves When the medium is toxic, volatile, radioactive, or extremely expensive and does not allow external leakage caused by reciprocating valve stems, bellows are often used to seal the valve cover. This special bonnet structure can protect the valve stem and valve...
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  • Selecting and applying slurry pumps

    Selecting and applying slurry pumps

    Selecting and applying slurry pumps  Slurry head correction A derating of pump total head is usually necessary because of the presence of solids in the slurry. Suction losses within the pump increase as the density of the slurry increases. Additionally, slip occurs between the transporting fluid ...
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  • Submersible sewage pump installation

    Submersible sewage pump installation

    Submersible sewage pumps are mainly used in municipal engineering, building construction, industrial sewage disposal and sewage treatment, and discharge sewage, wastewater and rainwater containing solid materials and long fibers. Today, the pump butler brings the installation of the submersible s...
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  • Precautions when wiring the explosion-proof motor

    Precautions when wiring the explosion-proof motor

    How to connect the explosion-proof motor The explosion-proof motor wiring should be in the special junction box. The junction box must also be equipped with rubber seals, JBQ motor lead wires and other special explosion-proof motor parts. Precautions when wiring the explosion-proof motor: 1. Chec...
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  • What does close coupled pump mean?

    What does close coupled pump mean?

    What does close coupled pump mean?   Close-coupled pumps are characterized by a common motor and pump shaft or by their motor shaft and pump shaft being rigidly connected in a pump casing. The pump casing is bolted to the drive flange rather than being installed on pump feet. This enables straigh...
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  • Pump Piping Requirements, Please See Here for Accuracy!

    Pump Piping Requirements, Please See Here for Accuracy!

    In order to avoid the force and torque generated by the weight of the pipe, the valve and the thermal stress of the pipe exceeding the maximum allowable external load of the pump inlet and outlet, a pipe rack shall be provided on the suction and discharge pipes of the pump.           The maximum ...
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  • Precautions When Wiring The Explosion-proof Motor

    Precautions When Wiring The Explosion-proof Motor

    Explosion-proof motor is a kind of motor that can be used in flammable and explosive places, and does not generate electric spark during operation. Explosion-proof motors are mainly used in coal, oil and gas, petrochemical and chemical industries. How to wiring connect the explosion-proof motor?...
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  • Selecting and applying slurry pumps

    Selecting and applying slurry pumps

    Selecting and applying slurry pumps Slurry head correction A derating of pump total head is usually necessary because of the presence of solids in the slurry. Suction losses within the pump increase as the density of the slurry increases. Additionally, slip occurs between the transporting fluid a...
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  • The Difference Between Soft Seal & Hard Seal Butterfly Valve

    The Difference Between Soft Seal & 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 + copp...
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  • The difference between YE3 motor and YE2 motor, YX3 motor

    YE3 motor is an ultra-efficient motor (high-efficiency energy-saving motor). It adopts new motor design, new technology and new materials, and improves the output efficiency of the motor by reducing the loss of electromagnetic energy, thermal energy and mechanical energy. YE2 high efficiency moto...
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  • 7 Simple Maintenance Steps for the Pump

    7 Simple Maintenance Steps for the Pump

    When things are going well, it’s easy to overlook routine maintenance and reasonably believe that it’s not worth taking the time to check and replace parts on a regular basis. But the reality is that most plants have multiple pumps to perform the functions that are essential to the s...
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  • Important Tips for Pump Operating and Maintance

    Important Tips for Pump Operating and Maintance

      • 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 friction heat...
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  • Notice: Six Preparations To Be Done Before The Pump Starts

    Notice: Six Preparations To Be Done Before The Pump Starts

          1. Irrigation pump (except for the submerged pump, before the other pumps are started (the first time the self-priming pump is started), the pump should be pumped (that is, the pumping medium must be filled with the pump chamber))  2. Irrigation device: Open the shut-off val...
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  • Mechanical Seal Maintenance Program Under Special Working Conditions

    Mechanical Seal Maintenance Program Under Special Working Conditions

    In the pumping device, the mechanical seal of the mobile device accounts for about 80%-85% of the total number of dynamic seals. In the case of a pump failure, the mechanical seal failure accounts for about half of the total maintenance work. It can be seen that the mechanical seal occupies the p...
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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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