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Recent content by mirghaffari

  1. mirghaffari

    selection of suitable pump for gasoline lifitng

    Dear sir, thanks for your good cooperation and helpful files. 1- Mr.LittleInch : we can not put a sampling cap in to the truck because we want to lift the liquid from different location and also different liquid level. for example water is heavy that gasoline and deposit in bottom of tank. with...
  2. mirghaffari

    selection of suitable pump for gasoline lifitng

    Excuse ne my dears, Our plant and our target is very simple ( as shown in schematic). We want to lift a liquid(oil, gas oil, gasoline,...) from the truck for sampling and its qualificatin. For this porpose, we have to lift the liquid with PD pumps. The distanse between pump and top of liquid...
  3. mirghaffari

    selection of suitable pump for gasoline lifitng

    Ok and thanks again, The teat was down with gas oil. And in this atached schematic you can see the our plant. In fact we want to lift the oil, gas oil or gasoline from the truck for sampling. All part work ok except the pump. As i toold our pump work only 30 secends...
  4. mirghaffari

    selection of suitable pump for gasoline lifitng

    Dear sir Today we test the mentioned pump(gear type) for lifting the gasoil from 3 meter. The pump lift the gasoil esely and discharge flow was good. But the pump worked only 30 secends! And after that the flow decrease to zero! Then we stop the power and reverse it for secend. Again we connect...
  5. mirghaffari

    selection of suitable pump for gasoline lifitng

    Thans alot for your kinkly information and help. Today we test this arrangement again with som modification and i reflect the result here. Thanks again
  6. mirghaffari

    selection of suitable pump for gasoline lifitng

    Thanks very much littleinch I underestand that our main problem is vapou pressure Now i can chech and solve the problem Thanks again for your help
  7. mirghaffari

    selection of suitable pump for gasoline lifitng

    Thanks Dears But it is impossible to use the nitrogen for increasing the pressure. We know that the maximum lifting height is around 10 meters. Why we can not lift the gasoil 3 meters?
  8. mirghaffari

    selection of suitable pump for gasoline lifitng

    thanks alot, the site elevation is not too high but it seems that the pump can not wotk becuse of low NPSHA. is there any solution to incrise the NPSH in this case? or is there any pump that can work at this sicuation? wen we fill the sucton line with gasoil, the pump works better than befor but...
  9. mirghaffari

    selection of suitable pump for gasoline lifitng

    Dear Sir, i want to select the suitable pump to lift the gasoline from the Truck. the truck is located 3 meters under the platform that pump is located on it. we try with gear type pump (that used in gas stations), but the result is not good becuse of very low flow. we can not used check valve...
  10. mirghaffari

    nedded native mechanical data sheet for injection package

    dear all i want to prepare a data sheet for some injection packages such as: 1- methanol injection package 2- anti foam injection package 3- corrosion inhibitor injection package in all package we have mettering pump, storage tank,mixer, electrical motor and related auxillary. could you please...
  11. mirghaffari

    motor sizing for centrifugal pump

    Dear artisi, As I know, in some project specification, only for parallel operating pumps, the motors shall be sized based on end of curve. I think the reason is as follow: Please consider two same pumps are working in parallel and they pass the 100 m3/hr flow in the line. In this case each pump...
  12. mirghaffari

    motor sizing for centrifugal pump

    thanks all, dear JJpellin, my consern is not aboat the sizing of couplig, my clear question is this: the pump manufacture sujest the 1700 KW motor for our requirment (as explaine in my thread). i want to check that this power is enough or not? based on our rated flow, this is good selection...
  13. mirghaffari

    motor sizing for centrifugal pump

    Dear friends, I want to select the suitable motor for pump. The hydraulic power as per this formula (Ph = q ρ g h / (3.6 106)) is 1115 KW The pump efficiency is 0.73, so the shaft power is equal to (1115/0.73) = 1527 KW As per our pump data sheet, the motor shall be selected based on” End of...
  14. mirghaffari

    Pump material class

    Think about material class S6 with Nace certificate.
  15. mirghaffari

    Non - API Pumps

    Thanks to all, especially Mr.TenPenny
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