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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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  • Suction Head

    Suction Head

    Suction Head Pump head ≠ suction head. Suction head : The vertical height of center line of centrifugal pump above the water surface in the source that pump can suck water in. ...
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