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  • Eu-Flo Pump Industries Co Ltd
  • Pump Expert of European Standard
  • Tel: 021-64911960
  • Phone: 13391393652
  • Email: [email protected]
  • Address:Room 1506, 638 Heng Feng Road, Su He No.1 Mansion,200040.Shanghai,China
  • Pump performance testing

  • April 19,2019

  •  Pump performance test processing

    Pump performance test of pump manufacturers in china

    Pump performance test of pump supplier in china

    1. Check the order information, confirm the capacity, head, efficiency, and power of the pump be tested, and confirm the diameter of the pump flanges;
    2. according to the diameter of the pump flange, tested pump power, select the appropriate test pipeline and test motor;
    3. connect the test pipeline, test motor, power supply and instrumentation sensors;
    4. measuring the ambient atmospheric pressure, water temperature, inlet surface distance;
    5. Input the capacity, head, efficiency requirements, gauge distance, atmospheric pressure and water temperature of the tested pump into the test software;
    6. Vacuum is drawn to fill the pump chamber and the suction line with water;
    7. Jog the water pump to confirm the correct rotation direction ;
    8. start the pump;
    9. Excluding the gas in the pressure sensor pipeline;
    10. Take the point test according to the pump capacity (record the vibration and noise of the pump at the rated point. If you need to confirm the pump bearing temperature rise up, you need to run the pump for 70 minutes , then testing temperature rise up and record it)
    11. Form a pump performance test report and print the test report;
    12. Determine the test results according to the order requirements;
    13. If the judgment is passed, go to the next process;
    14. If the judgment is unqualified, return it to production for improvement, and repeat the above steps after improvement.

    pump manufacturers in china|eu-flo pump

    pump supplier in china|eu-flo pump

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  • Water Lubrication Bearing

  • April 15,2019

  • Water Lubrication Bearing
    Water Lubrication Bearing

      

    JDB  Seria Water Lubrication Bearing Size

    JDB Water Lubrication Bearing
     

     

    d D IDF7 ODm6 L-0.10
    -0.30
    8 10 12 15 16 20 25 30 35 40 50 60 70 80
    8 12 8 +0.028
    +0.013
    12 +0.018
    +0.007
    081208 081210 081212 081215                    
    10 14 10 14 101408 101410 101412 101415   101420                
    12 18 12 +0.034
    +0.008
    18   121810 121812 121815 121816 121820 121825 121830            
    13 19 13 19 +0.021
    +0.008
      131910   131915 131916                  
    14 20 14 20   142010 142012 142015   142020 142025 142030            
    15 21 15 21   152110 152112 152115 152116 152120 152125 152130            
    16 22 16 22   162210 162212 162215 162216 162220 162225 162230 162235 162240        
    18 24 18 24     182412 182415 182416 182420 182425 182430 182435 182440        
    20 28 20 +0.041
    +0.020
    28   202810 202812 202815 202816 202820 202825 202830 202835 202840 202850      
    22 32 22 32 +0.025
    +0.009
        223212 223215   223220 223225              
    25 33 25 33     253312 253315 253316 253320 253325 253330 253335 253340 253350 253360    
    30 38 30 38     303812 303815   303820 303825 303830 303835 303840 303850 303860    
    35 45 35 +0.050
    +0.025
    45           354520 354525 354530 354535 354540 354550 354560    
    40 50 40 50           405020 405025 405030 405035 405040 405050 405060 405070 405080
    45 55 45 55 +0.030
    +0.011
                  455530 455535 455540 455550 455560    
    50 60 50 60               506030 506035 506040 506050 506060 506070 506080

     

    d D IDF7 ODm6 L-0.10
    -0.30
    30 35 40 50 60 70 80 100 120 130 140 150
    50 62 50 +0.050
    +0.025
    62 +0.030
    +0.011
    506230 506235 506240 506250 506260 506270            
    50 65 50 65 206530   506540 506550 506560 506570 506580 5065100        
    55 70 55 +0.060
    +0.030
    70     557040 557050 557060 557070            
    60 74 60 74 607430 607435 607440 607450 607460 607470 607480          
    60 75 60 75 607530 607535 607540 607550 607560 607570 607580 6075100        
    63 75 63 75         637560 637570 637580          
    65 80 65 80       658050 658060 658070 658080          
    70 85 70 85 +0.035
    +0.013
      708535 708540 708550 708560 708570 708580 7085100        
    70 90 70 90       709050 709060 709070 709080          
    75 90 75 90         759060 759070 759080 7590100        
    75 95 75 95         759560 759570 759580 7595100        
    80 96 80 96     809640 809650 809660 809670 809680 8096100 8096120      
    80 100 80 +0.071
    +0.036
    100     8010040 8010050 8010060 8010070 8010080 80100100 80100120   80100140  
    90 110 90 110       9011050 9011060 9011070 9011080 90110100 90110120     ,,

     

    100 120 100 120         10012060 10012070 10012080 100120100 100120120   100120140  
    110 130 110 130 +0.040
    +0.015
                11013080 110130100 110130120      
    120 140 120 140             12014080 120140100 120140120   120140140  
    125 145 125 +0.083
    +0.043
    145               125145100 125145120      
    130 150 130 150               130150100   130150130    
    140 160 140 160               140160100     140160140  
    150 170 150 170               150170100       150160140
    160 180 160 180               160180100       160180150

     

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  • Normal Unit Conversion Table

  • April 14,2019

  • centrifugal pump normaly unit and conversion table

    The unit conversion table is on tooling of flowing media.

    1.Volume & flowrate conversion table

    Volume & flowrate unit L/s L/min m3/h m3/min m3/s gal(UK)/min gal(US)/min ft3/h ft3/min ft3/s
    1L/s 1 60 3.6 0.06 0.001 13.1982 15.8502 127.134 2.1189 0.03531
    1L/min 0.01667 1 0.06 0.001 16.6667×10-6 0.21997 0.26417 2.11888 0.03531 0.00059
    1m3/h 0.27778 16.66667 1 0.01667 0.27778×10-3 3.66615 4.40287 35.31467 0.58858 0.00981
    1m3/min 16.66667 1000 60 1 0.01667 219.969 264.172 2118.88 35.31467 0.58858
    1m3/s 1000 60×103 3600 60 1 13198.14 15850.32 127132.8 2118.88 35.31467
    1gal(UK)/min 0.07577 4.5461 0.27277 4.5461×10-3 75.7683×10-6 1 1.20095 9.6324 0.16054 2.67567×10-3
    1gal(US)/min 0.06309 3.7854 0.22712 3.7854×10-3 63.09×10-6 0.83267 1 8.0208 0.13368 2.228×10-3
    1ft3/h 0.00787 0.472 0.02832 0.00047 7.83×10-6 0.1038 0.12467 1 0.01667 0.27783×10-3
    1ft3/min 0.47195 28.3168 1.69901 0.02832 0.47195×10-3 6.22883 7.48052 60 1 0.01667
    1ft3/s 28.317 1699.02 101.9412 1.69902 28.317×10-3 373.698 448.8312 3600 60 1
         remark L/s L/min M3/h  M3/M   M3/S UK GPM US GPM CFH CFM CFS

     

    2.Pressure unit conversion table

    Pressure Unit Mpa bar kgf/cm2 atm mmH2O mmHg lbf/in2(psi) 1 kgf/cm2

    =1kP/cm2

    =1at

     

    1 mmHg

    =1Torr

     

     

    1Pa=1N/m2

    1Mpa 1 10 10.1972 9.8692 101.91×103 7.5006×103 145.04
    1bar 0.1 1 1.01972 0.98692 10.197×103 750.06 14.504
    1kgf/cm2 0.098067 0.98067 1 0.96784 10×103 735.56 14.223
    1atm 0.10133 1.0133 1.0332 1 10332 760 14.696
    1mmHxO 9.8067×10-6 98.067×10-6 0.1×10-3 96.784×10-6 1 73.556×10-3 1.4223×10-3
    1mmHg 0.13332×10-3 1.3332×10-3 1.3595×10-3 1/760 13.595 1 19.337×10-3
    1lbf/in2(psi) 6.8948×10-3 68.948×10-3 70.307×10-3 68.046×10-3 703.07 51.715 1
    remark Mpa Bar Kg force /cm2 Standard atmospheric pressure Millimeter water column Millimetre mercury Pound force /inch2

     

    3.Power unit conversion table

    Power unit kW kgf·m/s PS HP 1W=1J/s=1N·m/s  1kcal/h=1.163W  1kW=859.845kcal/h
    1 kW 1 101.972 1.35962 1.34102 1Btu/h=0.29307W  1W=3.412 Btu/h   1HP=550ft·lbf/s
    1 kgf·m/s 9.8067×10-3 1 1/75=0.01333 0.01315 1W=1J/S=1N·m/S   1K cal/h=1.163瓦
    1 PS 0.7355 75 1 0.98632 1Kw=859.845K cal/h     1 Btu/h=0.29307瓦
    1 HP 0.7457 76.040 1.0139 1 1W=3.412 Btu/h    1 hp=550ft.lbf·/s
    Remark Kw Kg force·.m/S Metric HP Imperial HP 1 RT=3024 K cal/h=3.5169 Kw

     

    4.Force Unit conversion table

    Force Un N kgf lbf kN tf 1kgf=1kp(kilopond)

    1N=105Dyn(dyn)

    =105 Dyne

    1N 1 0.1019716 0.224809 1×10-3 0.102×10-3
    1kgf 9.80665 1 2.20462 0.0098 1×10-3
    1lbf 4.44822 0.453592 1 0.00445 0.454×10-3
    1kN 1000 101.9716 224.809 1 0.10197
    1tf 9806.65 1000 2204.62 9.80665 1
    Remark N Kg Force Pound Force KN Ton Force
     

     

     

     

     

     

    5.Torque Unit conversion table

    Torque N·m kgf·m
    1 N·m 1 0.101972
    1 kgf·m 9.80665 1
    Remark N·m Kg force·m

     

     

     

     

     

    6.Temperature Unit conversion table

    Temperature unit t(℉)=[t(℃)×9/5]+32 

    t(℃)=[ t(℉)-32] ×5/9

    T(K)=273.16+ t(℃)

    Delta T:△t(℉)= △t(℃) ×9/5

    △t(℃)= △t(℉) ×5/9

    ℉-

    ℃-

    K- Kelvin (thermodynamic temperature unit)

    T- Thermodynamic temperature (absolute temperature)

     

     

     

     

     

     

     

     

     

     

     

     

     

    7.Speed Unit Conversion table

    Speed unit m/s m/min ft/min ft/s
    1 m/s 1 60 196.85 3.281
    1 m/min 0.0167 1 3.281 0.0547
    1 ft/min 0.0051 0.3048 1 0.0167
    1 ft/s 0.3048 18.288 60 1
    remark m/s m/Min foot/Min inch/S

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    8.Volume unit conversion table

    Volume unit m3 cm3 dm3=L in3 ft3 yd3 fl.oz.(UK) fl.oz.(US) gal(UK) gal(US)
    1 m3 1 1×106 1×103 61023.7 35.31467 1.30795 35.195×103 33.184×103 219.969 264.172
    1 cm3 1×10-6 1 0.001 0.06102 35.31×10-6 1.31×10-6 0.0352 0.03381 0.00022 0.00026
    1 dm3 1×10-3 1000 1 61.0237 0.03531 0.00131 35.1952 33.8138 0.21997 0.26417
    1 in3 16.3871×10-6 16.3871 0.01639 1 0.00058 21.43×10-6 0.57675 0.55411 0.0038 0.00433
    1 ft3 28.3168×10-3 28316.8 28.3168 1728 1 0.03704 996.614 957.499 6.22883 7.48052
    1 yd3 0.76455 764555 764.555 46656 27 1 26908.5 25852.4 168.178 201.972
    1 fl.oz.(UK) 28.413×10-6 28.413 0.0284 1.73388 0.001 0.0004 1 0.96075 0.00625 0.00751
    1 fl.oz.(US) 29.5735×10-6 29.5735 0.0296 1.8047 0.00104 0.00004 1.04085 1 0.00651 0.00781
    1 gal(UK) 4.5461×10-3 4546.09 4.54609 277.42 0.16054 0.00595 160 153.721 1 1.20095
    1 gal(US) 3.7854×10-3 3785.41 3.78531 231 0.13368 0.00495 133.233 128 0.83267 1
    remark m3 cm3 Decimeter 3=Litre inch3 foot3 yd3 UK ounce (liquid) US ounce (liquid) Uk Gallon US Gallon

     

    9.Area unit conversion table

    Area unit cm2 m2 km2 in2 ft2 yd2
    1 cm2 1 0.0001 0.1×10-9 0.155 0.00108 0.00012
    1 m2 10000 1 1×10-6 1550 10.7639 1.19599
    1 km2 10×109 1×106 1 1.55×109 10.7639×106 1.196×106
    1 in2 6.4516 0.645×10-3 0.645×10-9 1 0.00694 0.00077
    1 ft2 929.03 0.0929 92.9×10-9 144 1 0.11111
    1 yd2 8361.27 0.83613 0.836×10-6 1296 9 1
    remark cm2 m2 km2 inch2 foot2 yd2

     

    10.Mass unit conversion table

    Mass unit g kg t oz lb US ton UK ton
    1g 1 0.001 1×10-6 0.03527 0.0022 1.102×10-6 0.984×10-6
    1kg 1000 1 0.001 35.274 2.20462 0.0011 0.00098
    1t 1×106 1000 1 35274 2204.62 1.10231 0.9842
    1oz 28.3495 0.02835 28.35×10-6 1 0.0625 31.25×10-6 0.00003
    1lb 453.592 0.45359 0.00045 16 1 0.0005 0.00045
    1 US ton 907185 907.185 0.90719 32000 2000 1 0.89286
    1 UK ton 1.016×106 1016.05 1.01605 35840 2240 1.12 1
    remark g Kg Ton ounce (uk ounce) pound Metric T(short T) Uk T(
    Long ton)

     

    11.Length unit conversion table

    Length Unit mm cm m Km in ft yd
    1mm 1 0.1 0.001 1×10-6 0.03937 0.00328 0.00109
    1cm 10 1 0.01 10×10-6 0.3937 0.03281 0.01094
    1m 1000 100 1 0.001 39.37 3.28084 1.09361
    1km 1×106 100×103 1000 1 39370 3280.84 1093.61
    1in 25.4 2.54 0.0254 25.4×10-6 1 0.08333 0.0277778
    1ft 304.8 30.48 0.3048 304.8×10-6 12 1 0.33333
    1yd 914.4 91.44 0.9144 914.4×10-6 36 3 1
    Remark Millimeter cm m KM inch foot yd

     

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  • Pneumatic Submersible Pump

  • April 5,2019

  • https://www.eu-flo.com/wp-content/uploads/2019/04/20190401160120B.jpg 

     EBB3-36 Pneumatic operation Submersible pump

       The pneumatic Submersible pump for Marine       

     EBB3-36 type pneumatic pump is a kind of explosion-proof air operation Submersible pump, EBB3-36 type pneumatic pump is widely used, safe and reliable, can work continuously, EBB3-36 type pump is pneumatic operation pump

    EBB3-36 type pneumatic pump is a mechanized tool with compressed air as power medium, which has the characteristics of small volume, high efficiency, safe and reliable, and continuous operation.

    EBB3-36 Pneumatic operation submersible pump is widely used in shipbuilding, coal mines, construction, power stations, chemicals and other industries of sewage, water drainage and irrigation, but also flammable, explosive and other bad work of the only ideal tool

    DATA OF EBB3-36 Pneumatic Operation Submersible Pump 

    Head: ≥20m

    Flowrate: ≥335min

    no-load speed: 6000rpm

    load gas consumption: 50L/S

    Air Pipe Inner Diameter: 13mm

    outlet thread: G11/2in

    Pump Height: 500mm

    Pump Weight: 17kg

     

    型号

    Capacity unloading(r/mi n)  

    Consumption(l/s)

    Air Pipe Dia(m m) Thread (i n)  

    Heigh(mm)

    Weight(kg)
    Head(m) Capacity (l/

    min)

    EBB3-36A >=20 >=335 6000 50 13 G11/2 500 17
    EBB3-36D >=20 >=335 6000 45 13 G11/2 380 12
    Pneumatic Submersible Pump
    Pneumatic Submersible Pump
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  • Centrifugal pump use Visual automatic oiler

  • March 28,2019

  • https://www.eu-flo.com/wp-content/uploads/2019/03/images.jpg

    Centrifugal pump use of Visual automatic oiler
    Centrifugal pump use of Visual automatic oiler

    Centrifugal pump use Visual automatic oiler

    Centrifugal water pump use Visual automatic oiler

     

    Visual automatic oiler instructions

    The 1741-V visual automatic oiler is designed for long-term stable lubrication and oil supply.

    The visual auto-oiler consists of a medium-duty spring (green), a light-duty spring (orange) and a heavy-duty spring (black). When used, the correct spring is selected according to the lubricant. #0-#3 grease can be used.

     

    All models of lubricant oilers (both manual and electric) have a standard lubricant coupling for grease to the oil cup and embedded fuses to prevent overfilling or cup pressure Too high.

     

    Description

    Interface thread 1/8 NPTF

    Interface (butter): standard

    Capacity: 2.2 cubic inches, about 3300ml

    Maximum pressure relief: 15PSI (about 1kg)

    Lubricating oil pressure: see table below

     

    Spring full cup empty cup 1. Screw the thread interface into the bearing to lubricate

    337421-1 Orange 0.23kg 0.147kg Note: With a hex wrench, do not tighten the oil cup with your hand.

    337421-2 Green 0.307kg 0.193kg Damaged

    337421-3 Black 0.387kg 0.240kg 2. Use grease coupling to add grease

    1. Add grease to the following

    Safe use specifications a. Side view if the plunger line to the lid angle is found.

    1. Please add oil to the oil cup according to the installation and operation instructions. Do not overfill b. Look down and find the indication point on the plunger to reach the red line of the cup cover.
    2. Carefully remove the lid and the lid is spring loaded.

    Note: Once the oil cup is too full, too much lubricating fluid will flow out of the oiler’s lid and relieve pressure. All normal operations will be carried out.

    Replace the spring:

    Choose the right spring according to the grease.

     

    Press and open the lid, then rotate the lid counterclockwise and release the pressure.

    Note: The lid of the cup is equipped with a spring. It cannot be removed quickly and needs to be carefully removed.

    1. Remove the spring from the cup.
    2. Install the new spring into the cup

    Note: Make sure the spring is installed in place on the cup and plunger

    1. Press and install the lid onto the oil cup and turn it clockwise until the pressure is right.

     

    maintenance

    Cleaning:

    1 Remove the oiler from the bearing housing

    1. Open the lid as above
    2. Remove the spring from the cup
    3. Insert the stick into the center hexagon and push the plunger out of the cup.
    4. Gently clean the parts with a clean, soft cloth.
    5. When reinstalling, apply a layer of film on the oil cup and plunger with grease to lubricate.
    6. Press the lid under the hand and rotate it clockwise to the proper pressure.
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  • Pump Common Faults and Troubleshooting Methods

  • March 27,2019

  • Split Case Pump Faults
    SPlit Case Pump Eu-Flo

    Pump Common Faults and Troubleshooting Methods

    capacity no enough or no out water

    1:motor reverse

    2:flow channel been clogging

    3:density of medium is too high

    4:required head too high or the pump head selection smaller than actual required head

    5:impeller been wear

    6:water lever is too lower and been suction air

    7:check valve installation reverse   (way adopt to trouble shooting:)

    1:correction motor rotation

    2:clear the Debris, set a Filter Grille near by the pump suction

    3:Diluted the flow medium with water

    4:try to lower required head( for example to change big diameter pipe and smoother pipe, reduce the elbow qty, or increase elbow Arc radius, or change into higher head pump)

    5:change pump impeller

    6:adjustment Floating ball Switch position, Make the lowest level meet the requirements of the mounting dimension diagram

    7:Correct check valve direction

    2.Cannot start

    1.Phase deficiency

    2.Impeller jammed

    1. Winding connectors or cable breakers

    4:Stator winding Burnout

    5:controlling electrical faults

    way adopt to trouble shooting

    1、check the line, eliminate the problem of missing phase

    2、remove debris, it is best to set the filter around the pump (but not in the pump inlet installation filter)

    3、Repair after checking with ohm meter

    4、Repair after checking with ohm meter

    5、repair, replacement winding or stator

    6、Stator Burnout     (reason maybe caused:)

    1、the lack of phase

    2、Impeller jammed

    3、winding joint or cable circuit breaker

    4、Stator winding burnout

    5、Control electrical fault     (way adopt to trouble shooting:)

    1、configuration protection Control electrical appliances and: Find out the line, clear the fault; remove the dirt, tighten the impeller fastening screws and stainless steel spring washer; dilute the medium with water; rinse and dredge the cooling system

    2、Replace the mechanical seal or “O” seal ring

    3、Tighten the fasteners of each part

    1. Too large current (reason maybe caused:)

    1、Pipes and impellers are blocked

    2、pumping liquid density or viscosity is high

    3、the selected pump head greatly exceeded the actual needs, or the use of changing conditions, the device head greatly reduced, so that the pump over the recommended flow operation (way adopt to trouble shooting:)

    1、Clean up the blockage in the pipe and impeller

    2、Change the density or viscosity of the pumping liquid

    3、off the small outlet valve, reduce the flow, or trim smaller impeller, or replace the lower head pump

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  • pump inducer function-multi-stage pump inducer function-centrifugal pump inducer function

  • March 24,2019

  • https://www.eu-flo.com/wp-content/uploads/2019/03/inducer-2B.jpg

    centrifugal pump inducer function
    centrifugal pump inducer function

     

    pump inducer function , multi-stage pump inducer function, centrifugal pump inducer function

       The inducer is installed in front of the first stage impeller of the centrifugal pump. It is called the front inducer. When the liquid flows through the inducer, it works on the liquid to increase the energy. It is equivalent to adding work energy to the liquid entering the rear impeller, which is equivalent to The liquid entering the rear impeller is pressurized to increase the suction of the pump.

     

    The centrifugal pump inducer is an axial flow impeller with a low blade load (only a few meters lift), a small blade installation angle, a small number of blades, and a dense cascade of cascades. It has high inhalation performance. The lift generated by the inducer acts to pressurize the centrifugal impeller behind, and the suction performance of the multistage centrifugal pump is improved, so that the suction speed of the centrifugal pump can reach about 3000. At present, the design method of the inducer is an empirical design method based on the test. There are usually two design methods: one is a flat cylindrical inducer design, and the other is a curved-leaf tapered inducer .

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