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  • Users: testingpump
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  1. testingpump

    Pump Efficiency Calculation

    Normally when I need to select any pump I go to the catalouges for the mnufacturers and suppliers, then I choose the best pump depending on the operating point (Head and Flow), then from the pump curves I can find the efficiency of the pump at the required operating point. what is the best...
  2. testingpump

    Installation of air release valves through water pipe line

    I have a project of transmission water pipe line (Carbon steel pipe , 12 " ) , the length of pipeline is about 10km , my concern is about the number of air release valves that shoub be installed through the pipeline , does it depend on distances or the profile of pipeline only , I mean do we...
  3. testingpump

    Size for Diesel engine generator - Urgent need

    Thanks alot for all your help , Regarding the motor it will be with soft start which will reduce the starting current , Today I contacted two generators suppliers , Caterpillar and Perkins , I got two different answers as both companies have two different softwares for calculation with...
  4. testingpump

    Size for Diesel engine generator - Urgent need

    3 phase motor
  5. testingpump

    Size for Diesel engine generator - Urgent need

    Dear all , Can you please help me in selecting the appropriate size for a diesel engine generator ,The generator will be used in a booster pumping station as a main source of power , The continuous generator will be used mainly to run a vertical turbine pump with a motor of nominal output power...
  6. testingpump

    Welding steel fittings with different wall thicknesses

    Is there are any limitations or restrictions for the welding of steel fittings / pipes with different wall thicknesses , or what is the minimum percent of wall thickness for the thinner wall thickness piece comparing to the thicker wall thickness piece .
  7. testingpump

    Submersible pumps and Vertical lineshaft turbine pumps

    Dear friends , In general I know that vertical pumps have better efficiency than submersible pumps, also the motor location above ground facilitate the maintenance istead of pulling out in the case of submersible pumps. But the vertical pump requires specific allignment of the borehole "well"...
  8. testingpump

    Welding galvanized steel fittings on steel pipes

    I know that welding galvanized fitting with steel fitting is not recommended , can you tell me why ?
  9. testingpump

    bending the galvanized steel pipe

    Thanks biginch, regarding the galvanized coating it,s not clear what happened as the pipe is used for buried application and insulated from outside by high density polyethylene coating , maybe the internal coating is damaged but I think it,s not easy to observe and repair , so I prefer to...
  10. testingpump

    bending the galvanized steel pipe

    In a water network project for some of the villages , 2" galvanized steel pipe is used, the available standard elbows are 45 deg and 90 deg , in some locations and due to the small roads width and the continuos change of direction of the pipeline the contractor bend the pipes to match the...
  11. testingpump

    Surge analysis / Calculatios - Urgent need

    Dear friends , Can you please help me in getting enough technical information for calculating and making surge analysis at one of the water booster stations (operating pressure 40 bar). If someone can send me any technical data or methods for calculating the surge value . it will be highly...
  12. testingpump

    Pump shafts of SS 316 and SS 416

    Dear all , What is the main diffirence between SS shaft for vertical turbine pump (water application) of types 316 SS AND 416 SS. I need to know what is the better type to be used and why ? I heared that 416SS is stronger, but I need to know good and enough technical information. regards
  13. testingpump

    Coating against water of high salinity

    what is the best recommended coating for steel pipes and steel fittings to protect them from water of high salinity.
  14. testingpump

    Protection from High salinity water

    Dear friends , Turboflowmeter with other fittings and gauges will be installed at the pump wellhead to measure the discharge flow from the pump. The discharge water is of high salinity (3000PPM), Y-sTRAINER will be installed before the flowmter, but Im still worry from the effect of salt on the...

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